Name: EVB_RTQ2104BPGSP-QA
Brand: Richtek

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RTQ2104BPGSP-QA 开发板展示了该稳压器的性能，可在 3V 至 36V 输入、2.1MHz 开关频率下提供最高 3A 输出。适用于工业及通信系统，具备输出短路保护、输入欠压保护、过电流保护及过温保护等功能。本文档包含物料清单（BOM）、典型应用电路、开发板概述、上电步骤、性能摘要及硬件说明，提供开发板元件、功能特性及使用方法等相关信息。

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1. General Description

The RTQ2104BPGSP-QA evaluation board showcases the regulator’s performance, delivering 3A output from a 3V to 36V input at 2.1MHz. Suitable for industrial and communication systems, it offers protection against shorted outputs, input undervoltage, overcurrent, and thermal shutdown. The documentation includes a BOM, typical application, board overview, power-up procedure, performance summary, and hardware description to provide information on the board’s components, capabilities, and usage.

2. Performance Specification Summary

Summary of the RTQ2104GSP Evaluation Board performance specificiaiton is provided in Table 1. The ambient temperature is 25°C. Table 1. RTQ2104GSP 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 style="border:solid #009EB8 1.0pt;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> Specification </td> <td width="272" style="width:203.9pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Test Conditions </td> <td width="46" style="width:34.5pt;border:solid #009EB8 1.0pt;border-left:none; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Min </td> <td width="46" style="width:34.55pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Typ </td> <td width="46" style="width:34.55pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Max </td> <td width="58" style="width:43.6pt;border:solid #009EB8 1.0pt;border-left:none; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> Unit </td> </tr> <tr style="height:17.0pt"> <td style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> Input Voltage Range </td> <td width="272" style="width:203.9pt;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"> Soft-start is finished </td> <td width="46" style="width:34.5pt;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 </td> <td width="46" style="width:34.55pt;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="46" style="width:34.55pt;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"> 36 </td> <td width="58" style="width:43.6pt;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 style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> Output Current </td> <td width="272" style="width:203.9pt;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"> </td> <td width="46" style="width:34.5pt;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"> 0 </td> <td width="46" style="width:34.55pt;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="46" style="width:34.55pt;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 </td> <td width="58" style="width:43.6pt;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 style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> Default Output Voltage </td> <td width="272" style="width:203.9pt;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"> </td> <td width="46" style="width:34.5pt;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"> 0.8 </td> <td width="46" style="width:34.55pt;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="46" style="width:34.55pt;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"> VIN </td> <td width="58" style="width:43.6pt;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 style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> Operation Frequency </td> <td width="272" style="width:203.9pt;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"> </td> <td width="46" style="width:34.5pt;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"> 1.89 </td> <td width="46" style="width:34.55pt;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"> 2.1 </td> <td width="46" style="width:34.55pt;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"> 2.31 </td> <td width="58" style="width:43.6pt;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"> MHz </td> </tr> <tr style="height:17.0pt"> <td style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> Output Ripple Voltage </td> <td width="272" style="width:203.9pt;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"> IOUT = 3A </td> <td width="46" style="width:34.5pt;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="46" style="width:34.55pt;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="46" style="width:34.55pt;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="58" style="width:43.6pt;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"> mVp-p </td> </tr> <tr style="height:17.0pt"> <td style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> Line Regulation </td> <td width="272" style="width:203.9pt;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"> IOUT = 3A, VIN = 8V to 24V </td> <td width="46" style="width:34.5pt;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="46" style="width:34.55pt;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"> ±1 </td> <td width="46" style="width:34.55pt;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="58" style="width:43.6pt;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> </tr> <tr style="height:17.0pt"> <td style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> Load Regulation </td> <td width="272" style="width:203.9pt;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"> VIN = 12V, IOUT = 0.001 A to 0.5A </td> <td width="46" style="width:34.5pt;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="46" style="width:34.55pt;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"> ±1 </td> <td width="46" style="width:34.55pt;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="58" style="width:43.6pt;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> </tr> <tr style="height:17.0pt"> <td style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> Load Transient Response </td> <td width="272" style="width:203.9pt;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"> IOUT = 0 A to 3A </td> <td width="46" style="width:34.5pt;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="46" style="width:34.55pt;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="46" style="width:34.55pt;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="58" style="width:43.6pt;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> </tr> <tr style="height:17.0pt"> <td style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> Maximum Efficiency </td> <td width="272" style="width:203.9pt;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"> VIN = 12V, VOUT = 5V, IOUT = 1.5A </td> <td width="46" style="width:34.5pt;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="46" style="width:34.55pt;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"> 90 </td> <td width="46" style="width:34.55pt;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="58" style="width:43.6pt;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> </tr> </table> </div>

3. Power-up Procedure

<h3>Suggestion Required Equipments</h3> <ul> <li>RTQ2104GSP Evaluation Board </li> <li>DC power supply capable of at least 36V and 3A</li> <li>Electronic load capable of 3A</li> <li>Function Generator</li> <li>Oscilloscope</li> </ul>

4. Quick Start Procedures

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.

5. Proper measurement equipment setup and follow the procedure below.

1) With power off, connect the input power supply to VIN and GND pins. 2) With power off, connect the electronic load between the VOUT and nearest GND pins. 3) Turn on the power supply at the input. Make sure that the input voltage does not exceeds 60V on the Evaluation Board. 4) Check for the proper output voltage using a voltmeter. 5) Once the proper output voltage is established, adjust the load within the operating ranges and observe the output voltage regulation, ripple voltage, efficiency and other performance.

6. Detailed Description of Hardware

<h3>Headers Description and Placement</h3> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image001_en.png"><img width="491" height="347" id="圖片 4" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image001_en.png" alt="一張含有文字, 電子用品, 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_rtq2104bpgsp-qa/html-images/image002_en.png"><img width="491" height="345" id="圖片 10" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image002_en.png" alt="一張含有文字, 電路, 電子用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>.

7. Test Points

The EVB is provided with the test points and pin names listed in the table below. <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:1.0cm"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> Test Point/ Pin Name </td> <td width="85%" style="width:85.36%;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:1.0cm"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> VIN </td> <td width="85%" style="width:85.36%;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:1.0cm"> DC power supply positive input terminal. The input voltage range is from 3V to 36V after soft-start is finished. </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> VOUT </td> <td width="85%" style="width:85.36%;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"> Electronic load positive output terminal. Draw maximum output current up to 3A. </td> </tr> <tr style="height:1.0cm"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> GND </td> <td width="85%" style="width:85.36%;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:1.0cm"> Reference ground for power supply or electronic load. Provide the ground return path for the control circuitry and low-side power MOSFET. </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> VIN_EMI+ </td> <td width="85%" style="width:85.36%;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"> Positive input terminal of EMI filter circuit. </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> VIN_EMI- </td> <td width="85%" style="width:85.36%;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"> Negative input terminal of EMI filter circuit. </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> VCC </td> <td width="85%" style="width:85.36%;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"> Linear regulator output. VCC is the output of the internal 5V linear regulator powered by VIN. </td> </tr> <tr style="height:1.0cm"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> EN </td> <td width="85%" style="width:85.36%;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:1.0cm"> Enable control input. A logic-high enables the converter; a logic-low forces the device into shutdown mode. </td> </tr> <tr style="height:17.0pt"> <td width="14%" style="width:14.64%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> JP1 </td> <td width="85%" style="width:85.36%;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"> EN jumper. Connect EN to logic-high to disable, connect logic-low to enable. </td> </tr> </table>

8. Bill of Materials

<div> <table class="TableNormal" border="1" cellspacing="0" cellpadding="0" width="680" style="width:510.2pt;border-collapse:collapse;border:none"> <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"> VIN = 12V, VOUT = 5V, IOUT = 3A, fSW = 2100kHz </td> </tr> <tr style="height:17.0pt"> <td width="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; background:#009EB8;padding:0cm 0cm 0cm 0cm;height:17.0pt"> Reference </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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="100" style="width:75.0pt;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="123" style="width:92.55pt;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="91" style="width:68.05pt;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="91" style="width:68.15pt;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> <tr style="height:1.0cm"> <td width="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> U4 </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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"> RTQ2104BPGSP-QA </td> <td width="100" style="width:75.0pt;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"> RTQ2104-QA </td> <td width="123" style="width:92.55pt;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"> Step-Down Converter </td> <td width="91" style="width:68.05pt;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"> SOP-8 (Exposed Pad) </td> <td width="91" style="width:68.15pt;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="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> CBOOT </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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"> GCJ188R71E104MA12 </td> <td width="100" style="width:75.0pt;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"> 0.1µF </td> <td width="123" style="width:92.55pt;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, 25V, X7R </td> <td width="91" style="width:68.05pt;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"> 0603 </td> <td width="91" style="width:68.15pt;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:1.0cm"> <td width="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> CFF1 </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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"> 0603B121K500CT </td> <td width="100" style="width:75.0pt;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"> 120pF </td> <td width="123" style="width:92.55pt;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="91" style="width:68.05pt;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"> 0603 </td> <td width="91" style="width:68.15pt;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="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> CVCC1 </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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"> GRM21BR71A106KE51L </td> <td width="100" style="width:75.0pt;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"> 10µF </td> <td width="123" style="width:92.55pt;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, 10V, X7R </td> <td width="91" style="width:68.05pt;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"> 0805 </td> <td width="91" style="width:68.15pt;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:1.0cm"> <td width="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> C3 </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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"> UMK316AB7475KL-T </td> <td width="100" style="width:75.0pt;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="123" style="width:92.55pt;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="91" style="width:68.05pt;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"> 1206 </td> <td width="91" style="width:68.15pt;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"> TAIYO YUDEN </td> </tr> <tr style="height:1.0cm"> <td width="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> C4, C7, C16, CBOOT1 </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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"> 0603B104K500CT </td> <td width="100" style="width:75.0pt;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"> 0.1µF </td> <td width="123" style="width:92.55pt;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="91" style="width:68.05pt;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"> 0603 </td> <td width="91" style="width:68.15pt;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="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> C5, C6 </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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"> LMK316AB7226KL-TR </td> <td width="100" style="width:75.0pt;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"> 22µF </td> <td width="123" style="width:92.55pt;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, 10V, X7R </td> <td width="91" style="width:68.05pt;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"> 1206 </td> <td width="91" style="width:68.15pt;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"> TAIYO YUDEN </td> </tr> <tr style="height:1.0cm"> <td width="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R1 </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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"> WR06X1053FTL </td> <td width="100" style="width:75.0pt;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"> 105k </td> <td width="123" style="width:92.55pt;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="91" style="width:68.05pt;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"> 0603 </td> <td width="91" style="width:68.15pt;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="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> R2 </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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"> WR06X2002FTL </td> <td width="100" style="width:75.0pt;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"> 20k </td> <td width="123" style="width:92.55pt;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="91" style="width:68.05pt;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"> 0603 </td> <td width="91" style="width:68.15pt;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="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> RBOOT1 </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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"> WR06X10R0FTL </td> <td width="100" style="width:75.0pt;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 </td> <td width="123" style="width:92.55pt;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="91" style="width:68.05pt;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"> 0603 </td> <td width="91" style="width:68.15pt;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="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> RPG1, REN1 </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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="100" style="width:75.0pt;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="123" style="width:92.55pt;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="91" style="width:68.05pt;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"> 0603 </td> <td width="91" style="width:68.15pt;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="81" style="width:61.05pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> L1 </td> <td width="37" style="width:27.45pt;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="157" style="width:117.95pt;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"> 78439344022 </td> <td width="100" style="width:75.0pt;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"> 2.2µH </td> <td width="123" style="width:92.55pt;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"> Inductor, Isat = 7.5A, 11mΩ </td> <td width="91" style="width:68.05pt;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="91" style="width:68.15pt;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"> Würth Elektronik </td> </tr> </table> </div>

9. Typical Applications

<h3>EVB Schematic Diagram </h3> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image003_en.jpg"><img border="0" width="567" height="419" id="圖片 34" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image003_en.jpg" alt="Technical Document Image Preview" /></a> 1. The capacitance values of the input and output capacitors will influence the input and output voltage ripple. 2. MLCC capacitors have degrading capacitance at DC bias voltage, and especially smaller size MLCC capacitors will have much lower capacitance.

10. Measure Result

<table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" style="margin-left:26.35pt;border-collapse:collapse;border:none"> <tr> <td width="306" valign="top" style="width:229.8pt;border:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> Output Ripple Measurement </td> <td width="307" valign="top" style="width:230.35pt;border:solid #009EB8 1.0pt; border-left:none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> Load Transient Response </td> </tr> <tr style="height:166.0pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:166.0pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image004_en.jpg"><img border="0" width="292" height="195" id="圖片 24" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image004_en.jpg" 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:166.0pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image005_en.jpg"><img border="0" width="293" height="193" id="圖片 22" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image005_en.jpg" alt="Technical Document Image Preview" /></a> </td> </tr> <tr> <td width="306" valign="top" style="width:229.8pt;border:solid #009EB8 1.0pt; border-top:none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> Power On from EN </td> <td width="307" valign="top" 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"> Power Off from EN </td> </tr> <tr style="height:172.25pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:172.25pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image006_en.jpg"><img border="0" width="292" height="213" id="圖片 17" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image006_en.jpg" 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:172.25pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image007_en.jpg"><img border="0" width="293" height="221" id="圖片 18" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image007_en.jpg" alt="Technical Document Image Preview" /></a> </td> </tr> <tr> <td width="306" valign="top" style="width:229.8pt;border:solid #009EB8 1.0pt; border-top:none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> Short Circuit Response – Short and Recovery </td> <td width="307" valign="top" 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"> Start-Up Dropout Performance </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_rtq2104bpgsp-qa/html-images/image008_en.jpg"><img border="0" width="292" height="223" id="圖片 29" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image008_en.jpg" alt="Technical Document Image Preview" /></a> </td> <td width="307" valign="top" 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_rtq2104bpgsp-qa/html-images/image009_en.jpg"><img border="0" width="293" height="202" id="圖片 15" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image009_en.jpg" 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"> Efficiency vs. Output Current </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"> Output Voltage vs. Output Current </td> </tr> <tr style="height:184.15pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:184.15pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image010_en.jpg"><img border="0" width="303" height="251" id="圖片 13" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image010_en.jpg" 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:184.15pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image011_en.jpg"><img border="0" width="304" height="260" id="圖片 8" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image011_en.jpg" 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"> Output Voltage vs. Input Voltage </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"> Radiated EMI Performance </td> </tr> <tr style="height:184.85pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:184.85pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image012_en.jpg"><img border="0" width="292" height="234" id="圖片 1" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image012_en.jpg" 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:184.85pt"> <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image013_en.png"><img border="0" width="292" height="231" id="圖片 3" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image013_en.png" 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.

11. Evaluation Board Layout

Figure 1 to Figure 4 are RTQ2104GSP Evaluation Board layout. This board size is 70mm x 50mm and is constructed on four-layer PCB, outer layers with 2 oz. Cu and inner layers with 1 oz. Cu. <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image014_en.jpg"><img border="0" width="492" height="345" id="圖片 5" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image014_en.jpg" alt="Technical Document Image Preview" /></a> Figure 1. Top View (1st layer) <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image015_en.jpg"><img border="0" width="492" height="346" id="圖片 6" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image015_en.jpg" alt="Technical Document Image Preview" /></a> Figure 2. PCB Layout—Inner Side (2nd Layer) <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image016_en.jpg"><img border="0" width="492" height="345" id="圖片 7" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image016_en.jpg" alt="Technical Document Image Preview" /></a> Figure 3. PCB Layout—Inner Side (3rd Layer) <a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image017_en.jpg"><img border="0" width="491" height="345" id="圖片 9" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2104bpgsp-qa/html-images/image017_en.jpg" alt="Technical Document Image Preview" /></a> Figure 4. Bottom View (4th Layer)

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