Name: EVB_RT9490WSC
Brand: Richtek

1rem

rt-dark-800

headline-3

false

true

basicInfoTitle

left

buttonDownload

text-with-icon

secondary

i18n(button-item.download.button-label)

i18n(button-item.download.button-link)

_self

false

buttonContactUs

text-with-icon

secondary

i18n(button-item.contact-us.button-label)

i18n(button-item.contact-us.button-link)

_self

false

rt-dark-800

basicInfoSubtitle

width

fixed-width

altText

Product Spec Banner

backgroundColor

FFFFFF

basicInfoSection

basicInfoImageSwitcher

本开发板展示了 RT9490WSC 是一款高度集成的 5A 升降压开关电池充电管理与系统电源路径管理器件，适用于 2 至 4 节锂离子和锂聚合物电池。其低阻抗电源路径可优化开关模式工作效率、缩短电池充电时间，并在放电阶段延长电池寿命。具备充电与系统设置功能的 I2C 串行接口，使该器件成为真正灵活的解决方案。

EVB_RT9490WSC

width

fixed-width

basicInfoImageSection

anchor

overviewSection

i18n(anchor-tab.overview-section.title)

overviewSectionAnchorTab

designResourceSection

i18n(anchor-tab.design-resource-section.title)

designResourceSectionAnchorTab

relatedProductSection

i18n(anchor-tab.related-product-section.title)

relatedProductSectionAnchorTab

orderingInformationSection

i18n(anchor-tab.ordering-information-section.title)

orderingInformationSectionAnchorTab

width

full-width

anchorSection

overview

1. General Description

The Evaluation Board demonstrates that the RT9490WSC is designed for a highly-integrated 5A Buck-Boost switch mode battery charge management and system power path management device for 2-4 cell Li-Ion and Li-polymer batteries. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time, and extends battery life during the discharging phase. The I2C serial interface with charging and system settings makes the device a truly flexible solution.

2. Performance Specification Summary

Summary of the RT9490WSC Evaluation Board performance specification is provided in Table 1. The ambient temperature is 25°C. Table 1. RT9490WSC Evaluation Board Performance Specification Summary <div> <table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="width:510.2pt;border-collapse:collapse;border:none"> <tr style="height:17.0pt"> <td width="227" style="width:170.55pt;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Specification </td> <td width="237" style="width:177.75pt;border-top:solid #009EB8 1.0pt; border-left:none;border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Test Conditions </td> <td width="55" style="width:41.5pt;border:solid #009EB8 1.0pt;border-left:none; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Min </td> <td width="55" style="width:41.55pt;border-top:solid #009EB8 1.0pt;border-left: none;border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Typ </td> <td width="55" style="width:41.55pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Max </td> <td width="50" style="width:37.3pt;border-top:solid #009EB8 1.0pt;border-left: none;border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Unit </td> </tr> <tr style="height:17.0pt"> <td width="227" style="width:170.55pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Supply Input Voltage Range </td> <td width="237" style="width:177.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> </td> <td width="55" style="width:41.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> 3.6 </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 24 </td> <td width="50" style="width:37.3pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> V </td> </tr> <tr style="height:17.0pt"> <td width="227" style="width:170.55pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Maximum Input Current </td> <td width="237" style="width:177.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> </td> <td width="55" style="width:41.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 3.3 </td> <td width="50" style="width:37.3pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> A </td> </tr> <tr style="height:17.0pt"> <td width="227" style="width:170.55pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Maximum OTG Current </td> <td width="237" style="width:177.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> OTG mode </td> <td width="55" style="width:41.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 3.32 </td> <td width="50" style="width:37.3pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> A </td> </tr> <tr style="height:17.0pt"> <td width="227" style="width:170.55pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Maximum Output Current </td> <td width="237" style="width:177.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> (SW2), ISYS </td> <td width="55" style="width:41.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 5 </td> <td width="50" style="width:37.3pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> A </td> </tr> <tr style="height:17.0pt"> <td width="227" style="width:170.55pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Maximum Battery Voltage </td> <td width="237" style="width:177.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> </td> <td width="55" style="width:41.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 18.8 </td> <td width="50" style="width:37.3pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> V </td> </tr> <tr style="height:17.0pt"> <td width="227" style="width:170.55pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Maximum Charge Current </td> <td width="237" style="width:177.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> </td> <td width="55" style="width:41.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 5 </td> <td width="50" style="width:37.3pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> A </td> </tr> <tr style="height:17.0pt"> <td width="227" style="width:170.55pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Maximum Discharge Current </td> <td width="237" style="width:177.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> </td> <td width="55" style="width:41.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> -- </td> <td width="55" style="width:41.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 10 </td> <td width="50" style="width:37.3pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> A </td> </tr> </table> </div>

3. Detailed Description of Hardware

<h3>Headers Description and Placement</h3> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image001_en.jpg"><img width="340" height="345" id="圖片 271047543" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image001_en.jpg" alt="一張含有文字, 電子產品, 電路的圖片自動產生的描述" /></a> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image002_en.jpg"><img width="340" height="336" id="圖片 1855354546" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image002_en.jpg" alt="一張含有文字, 電子產品的圖片自動產生的描述" /></a> Carefully inspect all the components used in the EVB according to the following Bill of Materials table, and then make sure all the components are undamaged and correctly installed. If there is any missing or damaged component, which may occur during transportation, please contact our distributors or e-mail us at <a href="mailto:evb_service@richtek.com" class="link">evb_service@richtek.com</a>.

4. Test Points

The EVB is provided with the test points and pin names listed in the table below. <div> <table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="width:510.2pt;border-collapse:collapse;border:none"> <thead> <tr style="height:1.0cm"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> Test Point/ Pin Name </td> <td width="83%" style="width:83.74%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> Function </td> </tr> </thead> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> VIN1 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Input voltage for VAC1. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> PGND </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Ground. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> VIN2 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Input voltage for VAC2. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> SYSTEM </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Output voltage for sys. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> BATTERY </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Battery connection point. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> SNS_BATP </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> External battery positive sense. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> SNS_BATN </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> External battery negitive sense. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> PD1 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> USB Type-C port. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP7 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Type-C USB BUS tied to VAC1 or VAC2 jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP9 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Micro USB BUS tied to VAC1 or VAC2 jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP14 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> SDRV tied to ship FET or 1nF capacitor. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP19 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Pull up for I2C/INT/CE. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP1 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> ACDRV1 pull-low jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP6 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> ACDRV2 pull-low jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP4 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> VAC1-VBUS short jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP8 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> VAC2-VBUS short jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP2 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> USB_D+ jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP5 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> USB_D- jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP11 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> BAT-BATTERY short jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP13 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> BATP tied to drain of ship FET jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP16 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> BATP tied to GND or external battery negitive sense jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP17 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> BATP tied to BAT pin jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP20 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> REGN for TS circuit pull high jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP21 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Test resistence jumper with 500mA for ILIM_HZ function. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP22 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Test resistence jumper with 1.5A for ILIM_HZ function. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP23 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> CE pull-low jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP25 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Test resistence jumper with TS_NORMAL for JEITA. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP26 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Test resistence jumper for with TS_POTENTIOMETER JEITA. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP27 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Test resistence jumper for ILIM_HZ function </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP28 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> PG_LED enable jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP29 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> STAT_LED enable jumper. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP35 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> This header is for part number RT9490S. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP36 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> This header is for part number RT9490S. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP37 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> PROG resistence jumper for default set 2S_1.5MHz_2A ICHG. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP38 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> PROG resistence jumper for default set 2S_750KHz_2A ICHG. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP39 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> PROG resistence jumper for default set 3S_1.5MHz_1A ICHG. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP40 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> PROG resistence jumper for default set 3S_750KHz_1A ICHG. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP41 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> PROG resistence jumper for default set 4S_1.5MHz_1A ICHG. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP42 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> PROG resistence jumper for default set 4S_750KHz_1A ICHG. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> CP2 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> VAC1-VBUS short pad. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> CP3 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> VAC2-VBUS short pad. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> CP9 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> BAT-BATTERY short pad. </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.26%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> S1 </td> <td width="83%" style="width:83.74%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Button for exit ship mode or system reset. </td> </tr> </table> </div>

5. Default Jumper Setting on EVB

<table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="width:510.2pt;margin-left:1.85pt;border-collapse:collapse; border:none"> <thead> <tr style="height:17.0pt"> <td width="21%" style="width:21.12%;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Jumper </td> <td width="78%" style="width:78.88%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Description </td> </tr> </thead> <tr style="height:17.0pt"> <td width="21%" style="width:21.12%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP1 </td> <td width="78%" style="width:78.88%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Short ACDRV1 to _acdrv1. </td> </tr> <tr style="height:17.0pt"> <td width="21%" style="width:21.12%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP6 </td> <td width="78%" style="width:78.88%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Short ACDRV2 to _acdrv2. </td> </tr> <tr style="height:17.0pt"> <td width="21%" style="width:21.12%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP13 </td> <td width="78%" style="width:78.88%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Short BATP to BATTERY. </td> </tr> <tr style="height:17.0pt"> <td width="21%" style="width:21.12%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP14 </td> <td width="78%" style="width:78.88%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Short SDRV to MOS. </td> </tr> <tr style="height:17.0pt"> <td width="21%" style="width:21.12%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP16 </td> <td width="78%" style="width:78.88%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Short BATN to GND. </td> </tr> <tr style="height:17.0pt"> <td width="21%" style="width:21.12%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP20 </td> <td width="78%" style="width:78.88%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Short REGN to TS pull-up resistor. </td> </tr> <tr style="height:17.0pt"> <td width="21%" style="width:21.12%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP25 </td> <td width="78%" style="width:78.88%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Short TS to normal temperature resistor. </td> </tr> <tr style="height:17.0pt"> <td width="21%" style="width:21.12%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP22 </td> <td width="78%" style="width:78.88%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Short ILIM for 1.5A. </td> </tr> <tr style="height:17.0pt"> <td width="21%" style="width:21.12%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP37 </td> <td width="78%" style="width:78.88%;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> For 2 cell/1.5MHz setting. </td> </tr> </table>

6. Quick Start Procedure

<h3>Suggestion Required Equipments</h3> <ul> <li>RT9490WSC Evaluation Board </li> <li>DC power supply capable of 24V, 3.3A</li> <li>Battery simulator capable of 18.8V, 10A</li> <li>Electronic load capable of 10A</li> <li>Oscilloscope</li> </ul>

7. Evaluation Board Jumper Setup

The Evaluation Board is fully assembled and tested. Follow the steps below to verify board operation. Do not turn on supplies until all connections are made. When measuring the output voltage ripple, care must be taken to avoid a long ground lead on the oscilloscope probe. Measure the output voltage ripple by touching the probe tip and ground ring directly across the last output capacitor. 1. Use jumpers on JP37 to JP42 to set battery cells and switching frequency for default charging profile. <div> <table class="MsoTableGrid" border="1" cellspacing="0" cellpadding="0" width="680" style="width:510.2pt;border-collapse:collapse;border:none"> <tr style="height:17.0pt"> <td width="230" style="width:172.55pt;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Battery Cell (s) </td> <td width="238" style="width:178.75pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Switching Frequency </td> <td width="212" style="width:158.9pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Jumper No. </td> </tr> <tr style="height:17.0pt"> <td width="230" rowspan="2" style="width:172.55pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 2S </td> <td width="238" style="width:178.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 1.5MHz </td> <td width="212" style="width:158.9pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP24 </td> </tr> <tr style="height:17.0pt"> <td width="238" style="width:178.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 750kHz </td> <td width="212" style="width:158.9pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP25 </td> </tr> <tr style="height:17.0pt"> <td width="230" rowspan="2" style="width:172.55pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 3S </td> <td width="238" style="width:178.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 1.5MHz </td> <td width="212" style="width:158.9pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP26 </td> </tr> <tr style="height:17.0pt"> <td width="238" style="width:178.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 750kHz </td> <td width="212" style="width:158.9pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP27 </td> </tr> <tr style="height:17.0pt"> <td width="230" rowspan="2" style="width:172.55pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 4S </td> <td width="238" style="width:178.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 1.5MHz </td> <td width="212" style="width:158.9pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP28 </td> </tr> <tr style="height:17.0pt"> <td width="238" style="width:178.75pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> 750kHz </td> <td width="212" style="width:158.9pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP29 </td> </tr> </table> </div> 2. Use jumpers on JP1 and JP6 to connect ACDRV1 and ACDRV2 to the gate driver output from IC. If the external AC-RBFETs are not needed, use jumpers on JP4 and JP8 to bypass them and JP1 and JP6 should be used to connect ACDRV1 and ACDRV2 to GND. 3. Use a jumper on JP14 with Mid-Right side to connect SDRV to the gate driver output from IC. If the external ship FET is not needed, use a jumper on JP11 to bypass it and use JP14 with Mid-Left side to connect SDRV to the capacitor. 4. Use a jumper on JP25 (TS_NORMAL) or JP26 (TS_POTENTIOMETER) for setting TS pin configuration and JP20 for connecting to REGN as pull-up voltage. 5. Use a jumper on JP21 (500mA) or JP22 (1.5A) for ILIM setting and JP27 for controlling HIZ_EN. 6. Use a jumper on JP16 to connect BATN to PGND. 7. Use a jumper on JP13 for connecting BATTERY to BATP when the external ship FET is adopted. 8. Use a jumper on JP17 for connecting BAT to BATP when the external ship FET is not adopted. 9. Use a jumper on JP9 for connecting Type_C_IN on VAC1 or VAC2. Proper measurement equipment setup and follow the procedure below. 1. With power off, connect input power and ground to VIN1 or VIN2 and PGND respectively. 2. With load off, connect electronic load to SYSTEM and PGND respectively. 3. With power off, connect power and ground to BATTERY and PGND respectively. Turn on battery simulator, then the device is powered up. 4. Use I2C to set registers for charging function and proper protection level. Richtek also provides designers GUI software tool to read or write registers. The details are shown in the next chapter ” Evaluation GUI Software Tool Installation and Introduction”. 5. Turn on the input power supply to start charging. Make sure that the power supply voltage is under OVP level. 6. Check the output charging current using a current meter. 7. Once the proper charging current is established observe the output voltage regulation, ripple voltage, efficiency and other performance. 8. For testing SYS load, turns on the electronic load and adjusts SYS current.

8. Evaluation GUI Software Tool Installation and Introduction

The function settings of the RT9490 are not only hardware pins but also software register settings. The RT9490 register is set via I2C communication. To test evaluation board conveniently, Richtek provides GUI tool and users can use it to read and write the register. Follow the below steps to install the relative software tools.

9. Richtek Bridgeboard Utilities Installation

Get the Richtek Bridgeboard Utilities, user manual and purchase the bridge board from the website. <a href="https://www.richtek.com/Design%20Support/Reference%20Design/RD0001-01?sc_lang=en" class="link">https://www.richtek.com/Design%20Support/Reference%20Design/RD0001-01?sc_lang=en</a> Please follow the user manual to install the Richtek Bridgeboard Utilities. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image003_en.jpg"><img border="0" width="605" height="124" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image003_en.jpg" alt="Technical Document Image Preview" /></a>

10. Download the GUI

Get the RT9490 GUI from website. https://www.richtek.com/Design%20Support/Reference%20Design/UG9490WSC?sc_lang=en <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image004_en.jpg"><img border="0" width="567" height="271" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image004_en.jpg" alt="一張含有文字, 螢幕擷取畫面, 數字, 字型的圖片自動產生的描述" /></a> 3. The introduction of GUI interface is as below. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image005_en.png"><img border="0" width="600" height="426" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image005_en.png" alt="Technical Document Image Preview" /></a> A: All registers can be read/written in these pages. B: You can select which byte you want to read/write in this column. C: The selected register will continue to be read after click the scan button. D: Write: The selected register will be written to the device after click the write button. Read: The selected register will be updated after click the read button. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image006_en.png"><img border="0" width="569" height="366" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image006_en.png" alt="Technical Document Image Preview" /></a> E: This page is for charging behavior setting. F: This type of dropdown menu allows you to select the setting you need. G: You can scroll down/up to select the register setting. H: This type of menu allows you to select the bit setting you need. A solid fill indicates your selection. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image007_en.png"><img border="0" width="609" height="367" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image007_en.png" alt="Technical Document Image Preview" /></a> I: These lamp icon are STATUS type of register.

11. Test Procedure

<h3>Hardware Initial Settings</h3> 1. Follow the section “Evaluation Board Jumper Setup” to set the board jumper. 2. Use a battery simulator or a real battery to power up the RT9490 at the BATTERY pin. The voltage should be within the application range. For example, in 2-cell application, users can initially provide 8V to the BATTERY pin. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image008_en.png"><img border="0" width="454" height="323" id="圖片 4" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image008_en.png" alt="Technical Document Image Preview" /></a>

12. GUI Setup

1. Follow the section” Evaluation GUI Software Tool Installation” to Install the GUI tool. 2. Connect Richtek Wrenboard to evaluation board through JP33 SCL/SDA/PGND pin. 3. Connect Richtek Wrenboard to the computer. 4. After providing power to the Evaluation Board, run the RT9490_RT9490S_GUI_V4.exe. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image009_en.jpg"><img border="0" width="189" height="235" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image009_en.jpg" alt="一張含有文字, 螢幕擷取畫面, 字型, 數字的圖片自動產生的描述" /></a> 5. If GUI connection is successful, the slave address ID will show 0x53. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image010_en.png"><img border="0" width="546" height="375" id="圖片 5" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image010_en.png" alt="Technical Document Image Preview" /></a> <h3>Register Initial Setting</h3> 1. For board evaluation, disable watchdog initially if don’t want to verify watchdog function. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image011_en.jpg"><img border="0" width="596" height="89" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image011_en.jpg" alt="一張含有文字, 螢幕擷取畫面, 字型, 軟體的圖片自動產生的描述" /></a> 2. Check whether BATTERY_CELL setting is the same as PROG pin setting. This register can also be changed after powered up. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image012_en.png"><img border="0" width="514" height="61" id="圖片 11" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image012_en.png" alt="Technical Document Image Preview" /></a> 3. Set VSYSMIN for Buck-Boost sys pin minimum regulation level. Set it as minimum system voltage. 4. Set VBAT_REG for battery full charged level. 5. Set ICHG_CTRL for fast charge current level. 6. Set VMIVR for input voltage limitation level. Set it lower than test input voltage. 7. Set IAICR for input current limitation level. Set it lower than test input source current limit. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image013_en.png"><img border="0" width="518" height="216" id="圖片 6" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image013_en.png" alt="Technical Document Image Preview" /></a> 8. Set the IEOC for charging termination level. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image014_en.png"><img border="0" width="393" height="69" id="圖片 13" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image014_en.png" alt="Technical Document Image Preview" /></a> 9. Check whether VAC_OVP level is large enough. It should bigger than VBUS input voltage. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image015_en.jpg"><img border="0" width="684" height="92" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image015_en.jpg" alt="一張含有螢幕擷取畫面, 文字, 軟體, 行的圖片自動產生的描述" /></a> 10. The charger input current limit is decided by the minimum value between AICR and ILIM. If do not want to verify the ILIM_HZ function, disabled ILIM_HZ function. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image016_en.png"><img border="0" width="636" height="51" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image016_en.png" alt="Technical Document Image Preview" /></a>

13. Charger Function Test

1. After finishing register initial setting, give VAC1 or VAC2 pin input power to start charger. For example, give it 15V. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image017_en.png"><img border="0" width="606" height="324" id="圖片 7" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image017_en.png" alt="Technical Document Image Preview" /></a> 2. Check whether it triggers AICR_STAT, MIVR_STAT, or other protections. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image018_en.png"><img border="0" width="567" height="389" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image018_en.png" alt="Technical Document Image Preview" /></a> 3. If it triggers AICR_STAT, it means that the input current is near limitation level. Increase input voltage or reduce ICHG_CTRL setting to leave AICR_STAT. 4. If it triggers MIVR_STAT, it means that the input power is not enough and input source voltage drops. Increase input power ability or reduce ICHG_CTRL setting to leave MIVR_STAT. 5. Check the CHG_STAT. In CC mode, the charging current will be regulated as register ICHG_CTRL if it doesn’t have AICR_STAT and MIVR_STAT. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image019_en.png"><img border="0" width="654" height="101" id="圖片 1" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image019_en.png" alt="Technical Document Image Preview" /></a> 6. Measure the BAT pin output current to verify the fast charge current. 7. Gradully increase battery simulator voltage to simulate battery charging. 8. Measure the charging current and the BATP pin voltage as the battery voltage increases. Once the charging current starts to fall down, verify that the voltage remains at the VBAT_REG level (IR drop + VBAT = VBAT_REG level). 9. Check that CHG_STAT is into CV mode. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image020_en.jpg"><img border="0" width="369" height="51" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image020_en.jpg" alt="一張含有文字, 螢幕擷取畫面, 行, 字型的圖片自動產生的描述" /></a> 10. Continue increasing the battery voltage. Check that the BAT charging current is gradually down in CV mode. 11. After BAT charging current is below IEOC level, the RT9490 will stop charging. 12. CHG_STAT will show Charge_done at this full-charged stage. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image021_en.jpg"><img border="0" width="465" height="70" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image021_en.jpg" alt="一張含有文字, 螢幕擷取畫面, 字型, 行的圖片自動產生的描述" /></a> 13. If EN_TE is disabled at initial setting, the IEOC function will not work at this stage. The RT9490 will not stop charging and will continue charging until the current decreases to 0A. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image022_en.png"><img border="0" width="588" height="89" id="圖片 21" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image022_en.png" alt="Technical Document Image Preview" /></a> 14. To verify the recharge function, load the SYS pin to discharge the battery or reduce the voltage of the battery simulator. 15. The recharge level is determined by the VRECHG register. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image023_en.png"><img border="0" width="492" height="53" id="圖片 22" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image023_en.png" alt="Technical Document Image Preview" /></a> 16. Afrer battery voltage is below (VBAT_REG-VRECHG), the RT9490 will start to charge again. For example, VBAT_REG is 8.4V, VRECHG is 200mV and the recharge level will be 8.2V. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image024_en.png"><img border="0" width="361" height="51" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image024_en.png" alt="Technical Document Image Preview" /></a> 17. Plug out the VAC input power. RT9490 will stop charging.

14. OTG Function Test

1. Finish register initial setting as section” Register initial setting” . 2. Make sure the battery voltage is above VOTG_LBP (typ. 2.7V). For example, provide it 8V. 3. Set the OTG voltage level. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image025_en.png"><img border="0" width="303" height="333" id="圖片 24" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image025_en.png" alt="Technical Document Image Preview" /></a> 4. Enable EN_OTG. The RT9490 will start to output voltage at the VBUS pin. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image026_en.png"><img border="0" width="315" height="67" id="圖片 25" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image026_en.png" alt="Technical Document Image Preview" /></a> 5. On the RT9490 evaluation board, there are mounted AC-RBFETs already. If AC-RBFET is used by jumper setting(see the details in the section” Evaluation Board Jumper Setup”), OTG only starts after the choosed AC-RBFET is turned on. For example, if VAC1 RBFET is used, EN_ACDRV1 should be enabled. The RT9490 starts to output OTG voltage after register EN_ACDRV1 is set to 1. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image027_en.png"><img border="0" width="384" height="98" id="圖片 26" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image027_en.png" alt="一張含有文字, 螢幕擷取畫面, 字型, 行的圖片自動產生的描述" /></a> 6. Measure the VBUS pin and VAC pin to verify the OTG setting level. 7. After OTG starts, OTG voltage is still able to be set. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image028_en.png"><img border="0" width="305" height="317" id="圖片 2" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image028_en.png" alt="Technical Document Image Preview" /></a>

15. Measure Results Reference

<table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" style="margin-left:26.35pt;border-collapse:collapse;border:none"> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt"> Power Up with VAC Pluged in </td> <td width="307" style="width:230.35pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> Charging in Buck Mode </td> </tr> <tr style="height:168.2pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:168.2pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image029_en.png"><img border="0" width="292" height="214" id="圖片 15" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image029_en.png" alt="Technical Document Image Preview" /></a> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:168.2pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image030_en.png"><img border="0" width="293" height="220" id="圖片 20" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image030_en.png" alt="Technical Document Image Preview" /></a> </td> </tr> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> Charging in Boost Mode </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> Charging in Buck-Boost Mode </td> </tr> <tr style="height:172.95pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:172.95pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image031_en.png"><img border="0" width="292" height="218" id="圖片 16" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image031_en.png" alt="Technical Document Image Preview" /></a> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:172.95pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image032_en.png"><img border="0" width="293" height="217" id="圖片 17" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image032_en.png" alt="Technical Document Image Preview" /></a> </td> </tr> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> Charging Enabled by CE Pin </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> Charging Disabled by CE Pin </td> </tr> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image033_en.png"><img border="0" width="302" height="228" id="圖片 18" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image033_en.png" alt="Technical Document Image Preview" /></a> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image034_en.png"><img border="0" width="302" height="226" id="圖片 19" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image034_en.png" alt="Technical Document Image Preview" /></a> </td> </tr> </table> <table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" style="margin-left:26.35pt;border-collapse:collapse;border:none"> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt"> 1s Battery Charger Efficiency </td> <td width="307" style="width:230.35pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> 2s Battery Charger Efficiency </td> </tr> <tr style="height:184.2pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:184.2pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image035_en.png"><img border="0" width="300" height="231" id="圖片 163" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image035_en.png" alt="Technical Document Image Preview" /></a> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:184.2pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image036_en.png"><img border="0" width="297" height="228" id="圖片 160" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image036_en.png" alt="Technical Document Image Preview" /></a> </td> </tr> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> 3s Battery Charger Efficiency </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> 4s Battery Charger Efficiency </td> </tr> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image037_en.png"><img border="0" width="297" height="228" id="圖片 161" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image037_en.png" alt="Technical Document Image Preview" /></a> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image038_en.png"><img border="0" width="297" height="228" id="圖片 1971527625" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image038_en.png" alt="Technical Document Image Preview" /></a> </td> </tr> <tr> <td width="614" colspan="2" style="width:460.15pt;border:solid #009EB8 1.0pt; border-top:none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> Thermal Image at VIN = 15V, VBAT = 8V, ICHG = 2A </td> </tr> <tr style="height:203.0pt"> <td width="614" colspan="2" style="width:460.15pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt;height:203.0pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image039_en.jpg"><img border="0" width="398" height="280" id="圖片 3" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image039_en.jpg" alt="Technical Document Image Preview" /></a> </td> </tr> </table> Note: When measuring the input or output voltage ripple, care must be taken to avoid a long ground lead on the oscilloscope probe. Measure the output voltage ripple by touching the probe tip directly across the output capacitor.

16. Typical Applications

<h3>EVB Schematic Diagram</h3> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image040_en.png"><img border="0" width="499" height="684" id="Picture 4" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image040_en.png" alt="Technical Document Image Preview" /></a>

17. Bill of Materials

<div> <table class="TableNormal" border="1" cellspacing="0" cellpadding="0" width="680" style="border-collapse:collapse;border:none"> <thead> <tr style="height:17.0pt"> <td width="680" colspan="7" style="width:510.2pt;border:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> fSW = 1.5MHz </td> </tr> <tr style="height:17.0pt"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> Reference </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> Count </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> Part Number </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> Value </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> Description </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> Package </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> Manufacturer </td> </tr> </thead> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> U1 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> RT9490WSC </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> -- </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Switching Charger </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WL-CSP-56B 2.93x3.46 (BSC) </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> RICHTEK </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> C7, C18 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 2 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> GRM033R61C473KE84 </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 47nF </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Capacitor, Ceramic, 16V, X5R </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> C-0201 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> MURATA </td> </tr> <tr style="height:39.7pt"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:39.7pt"> C10, C13, C22, C23, C24 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> 5 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> GRM188R6YA106MA73 </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> 10µF </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> Capacitor, Ceramic, 35V, X5R </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> C-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> MURATA </td> </tr> <tr style="height:39.7pt"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:39.7pt"> C11, C25, C30 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> 3 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> 0402B104K500CT </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> 0.1µF </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> Capacitor, Ceramic, 50V, X7R </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> C-0402 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> WALSIN </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> C26 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> GRM155R60J475ME47D </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 4.7µF </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Capacitor, Ceramic, 6.3V, X5R </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> C-0402 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> MURATA </td> </tr> <tr style="height:39.7pt"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:39.7pt"> C27, C29, C31, C34, C36 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> 5 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> GRM188R61E106MA73 </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> 10µF </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> Capacitor, Ceramic, 25V, X5R </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> C-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> MURATA </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> C39 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> 0402B102K500CT </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1nF </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Capacitor, Ceramic, 50V, X7R </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> C-0402 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:17.0pt"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> D18, D19 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> 2 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> LNL-190SUG </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> -- </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> LED_GREEN </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> LED-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> LighTop </td> </tr> <tr style="height:17.0pt"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> L2 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> PIMB063T-1R0MS-68 </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> 1µH </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> 20%/6.7mΩ </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> L-7-4X6-8 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> CYNTEC </td> </tr> <tr style="height:39.7pt"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:39.7pt"> PD1 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> 121U-3CST-09CR </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> -- </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> USB TYPE-C 3.1 </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:39.7pt"> 9.87x9.75mm </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:39.7pt"> JEM </td> </tr> <tr style="height:51.0pt"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:51.0pt"> Q1, Q2, Q4, Q5 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:51.0pt"> 4 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:51.0pt"> AONR36366 </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:51.0pt"> -- </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:51.0pt"> AONR36366 </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:51.0pt"> DFN 3x3 EP </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:51.0pt"> ALPHA & OMEGA SEMICONDUCTOR </td> </tr> <tr style="height:51.0pt"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:51.0pt"> Q6 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:51.0pt"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:51.0pt"> AON7528 </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:51.0pt"> -- </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:51.0pt"> AON7528 </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:51.0pt"> DFN 3.3x3.3 EP </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:51.0pt"> ALPHA & OMEGA SEMICONDUCTOR </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R12 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR06X000 PTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 0 </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R13, R14 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 2 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR06X1000FTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 100 </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R15 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> CR-02FL6---5K1 </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 5.1k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/16W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0402 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> VIKING </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R16 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> RTT032553FTP </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 255k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> RALEC </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R17 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR06X1273FTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 127k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R18, R21, R22, R27 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 4 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR04X1002FTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 10k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0402 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R23, R24 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 2 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> CR-02FL6---4K7 </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 4.7k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/16W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0402 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> VIKING </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R25 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR06X1003FTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 100k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R26 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR06X3012FTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 30.1k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R29 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> RTT033001FTP </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 3k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> RALEC </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R30 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR06X4701FTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 4.7k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:17.0pt"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> R31 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> RC0603FR-076K04L </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> 6.04k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> Resistor </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> YAGEO </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R32 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR06X8201FTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 8.2k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R33 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR06X1052FTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 10.5k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R34 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR06X1372FTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 13.7k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R35 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR06X1742FTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 17.4k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:1.0cm"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R36 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> WR06X2702FTL </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> 27k </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> Resistor, Chip, 1/10W, 1% </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R-0603 </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:1.0cm"> WALSIN </td> </tr> <tr style="height:17.0pt"> <td width="71" style="width:52.95pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:17.0pt"> S1 </td> <td width="38" style="width:28.7pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> 1 </td> <td width="161" style="width:120.4pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> HTS6601H </td> <td width="95" style="width:71.4pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> -- </td> <td width="119" style="width:89.55pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> SW-TACT-SWITCH </td> <td width="104" style="width:77.7pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 0cm 0cm 0cm;height:17.0pt"> TACT-BTN </td> <td width="93" style="width:69.5pt;border-top:none;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt;padding:0cm 0cm 0cm 0cm; height:17.0pt"> High-Tronics </td> </tr> </table> </div>

18. Evaluation Board Layout

Figure 1 to Figure 4 are RT9490WSC Evaluation Board layout. This board size is 101.6mm x 101.6mm and is constructed on four-layer PCB, outer layers with 1 oz. Cu and inner layers with 1 oz. Cu. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image041_en.jpg"><img border="0" width="567" height="563" id="圖片 774576314" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image041_en.jpg" alt="一張含有文字, 電子產品, 收據的圖片自動產生的描述" /></a> Figure 1. Top View (1st layer) <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image042_en.jpg"><img border="0" width="567" height="566" id="圖片 8" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image042_en.jpg" alt="一張含有圖表的圖片自動產生的描述" /></a> Figure 2. PCB Layout—Inner Side (2nd Layer) <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image043_en.jpg"><img border="0" width="567" height="567" id="圖片 10" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image043_en.jpg" alt="一張含有地圖的圖片自動產生的描述" /></a> Figure 3. PCB Layout—Inner Side (3rd Layer) <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image044_en.jpg"><img border="0" width="567" height="568" id="圖片 12" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt9490wsc/html-images/image044_en.jpg" alt="一張含有文字, 螢幕擷取畫面, 地圖, 圖表的圖片自動產生的描述" /></a> Figure 4. Bottom View (4th Layer)

width

fixed-width

overviewSection

design-resources

designResourceMultipleTable

width

fixed-width

designResourceSection

i18n(tabs.related-product.title)

relatedProductTabs

i18n(tab-item.parameter-section.title)

parameterSection

parameterSectionTab

i18n(tab-item.package-size-pin-size-section.title)

packageSizePinsSizeSection

packageSizePinsSizeSectionTab

i18n(tab-item.product-feature-section.title)

productFeatureSection

productFeatureSectionTab

buttonSeeProductDifferences

text-with-icon

right

secondary-m

tertiary

i18n(button-item.see-product-differences.button-label)

i18n(button-item.see-product-differences.button-link)

_self

false

buttonFindOtherCategory

dropdown

i18n(button-item.find-other-category.button-label)

i18n(button-item.find-other-category.button-link)

_self

category-list

width

fixed-width

backgroundColor

F5F6F8

relatedProductSection

scrollable-table

parameterTable

width

fixed-width

parameterSection

normal-table

table-group

package-size-pins-size

packageSizePinsSizeTable

width

fixed-width

packageSizePinsSizeSection

productFeature

width

fixed-width

productFeatureSection

i18n(tabs.ordering-information.title)

orderingInformationTabs

i18n(tab-item.evb-section.title)

evbSection

evbSectionTab

i18n(tab-item.product-section.title)

productSection

productSectionTab

width

fixed-width

orderingInformationSection

evbImageSwitcher

normal-table

card-list

evb

evbTable

width

fixed-width

evbSection

productImageSwitcher

normal-table

card-list

products

productTable

width

fixed-width

productSection