overview

1. General Description

<p class="MsoNormal">This document explains the function and use of the RTQ2822A evaluation board (EVB), the RTQ2822A is a high-performance, synchronous step-down converter that can deliver up to 12A output currentvwith an input supply voltage range of 4.5V to 17V. The device integrates low R_DS(ON) power MOSFETs, accurate 0.6V reference and an integrated diode for bootstrap circuit to offer a very compact solution. This document explains the function and use of the RTQ2822A evaluation board (EVB), and provides information to enable operation, modification of the evaluation board and circuit to meet individual requirements.</p>

2. Performance Specification Summary

<p class="bady">Summary of the RTQ2822AGQVF Evaluation Board performance specificiaiton is provided in Table 1. The ambient temperature is 25°C.</p> <p class="MsoNormal">Table 1. RTQ2822AGQVF Evaluation Board Performance Specification Summary</p> <div> <table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="border-collapse:collapse;border:none"> <tr style="height:17.0pt"> <td width="198" style="width:148.6pt;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Specification</p> </td> <td width="293" style="width:219.7pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Test Conditions</p> </td> <td width="47" style="width:35.45pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Min</p> </td> <td width="47" style="width:35.45pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Typ</p> </td> <td width="47" style="width:35.45pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Max</p> </td> <td width="48" style="width:35.75pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpLast">Unit</p> </td> </tr> <tr style="height:17.0pt"> <td width="198" style="width:148.6pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Default Input Voltage</p> </td> <td width="293" style="width:219.7pt;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"> <p class="ListParagraph1CxSpMiddle">Default = 12V</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">4.5</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">12</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">17</p> </td> <td width="48" style="width:35.75pt;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"> <p class="ListParagraph1CxSpLast">V</p> </td> </tr> <tr style="height:17.0pt"> <td width="198" style="width:148.6pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Output Voltage</p> </td> <td width="293" style="width:219.7pt;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"> <p class="ListParagraph1CxSpMiddle">Default = 1.2V</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">0.6</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">5.5</p> </td> <td width="48" style="width:35.75pt;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"> <p class="ListParagraph1CxSpLast">V</p> </td> </tr> <tr style="height:17.0pt"> <td width="198" style="width:148.6pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Maximum Output Current</p> </td> <td width="293" style="width:219.7pt;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="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">12</p> </td> <td width="48" style="width:35.75pt;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"> <p class="ListParagraph1CxSpLast">A</p> </td> </tr> <tr style="height:17.0pt"> <td width="198" style="width:148.6pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Operation Frequency</p> </td> <td width="293" style="width:219.7pt;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"> <p class="ListParagraph1CxSpMiddle">Default = 800kHz</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">400</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">800</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">1200</p> </td> <td width="48" style="width:35.75pt;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"> <p class="ListParagraph1CxSpLast">kHz</p> </td> </tr> <tr style="height:17.0pt"> <td width="198" style="width:148.6pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Soft-Start Time</p> </td> <td width="293" style="width:219.7pt;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"> <p class="ListParagraph1CxSpMiddle">C_SS = 47nF</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">4.7</p> </td> <td width="47" style="width:35.45pt;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"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td width="48" style="width:35.75pt;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"> <p class="ListParagraph1CxSpLast">ms</p> </td> </tr> </table> </div>

3. Power-up Procedure

<h3>Suggestion Required Equipments</h3> <ul> <li>DC Power Supply (Chroma, 62006P-100-25)</li> <li>Electronic load capable of 30A</li> <li>Four Channels Digital Real-Time Oscilloscope</li> <li>Display Multi-meter (34405A)</li> </ul>

4. Power-up & Measurement Procedure

<p class="MsoListParagraph">1. Apply a 12V nominal input power supply (4.5V < V_IN < 17V) to the VIN and GND terminals.</p> <p class="MsoListParagraph">2. Set the jumper at JP1 to connect terminals H and EN, connecting EN to VIN through resistor R18 (100kΩ). The Enable pin can connected to VIN directly as well to enable operation.</p> <p class="MsoListParagraph">3. Set the jumper at JP2 to connect terminals H and PGOOD, Connenting VCC to H through resistor RPGOOD (100kΩ).</p> <p class="MsoListParagraph">4. Verify the output voltage (approximately 1.2V) between VOUT and GND.</p> <p class="MsoListParagraph">5. Connect an external load up to 12A to the VOUT and GND terminals and verify the output voltage and current.<br /> <br /> </p>

5. Detailed Description of Hardware

<h3>Headers Description and Placement</h3> <p class="MsoListParagraph"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image001_en.jpg"><img width="567" height="527" id="圖片 3" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image001_en.jpg" alt="一張含有 文字, 電子產品 的圖片 自動產生的描述" /></a></p> <p class="MsoListParagraph">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>.</p>

6. Test Points

<p class="MsoNormal">The EVB is provided with the test points and pin names listed in the table below.</p> <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:16.96%;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="23CxSpFirst">Test Point/</p> <p class="23CxSpMiddle">Pin Name</p> </td> <td width="83%" style="width:83.04%;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="23CxSpLast">Function</p> </td> </tr> </thead> <tr style="height:17.0pt"> <td width="16%" style="width:16.96%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1">EN</p> </td> <td width="83%" style="width:83.04%;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"> <p class="MsoNormal">Enable control input</p> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.96%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1">MODE</p> </td> <td width="83%" style="width:83.04%;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"> <p class="MsoNormal">Current limit, switching frequency, and light load operation mode selection pin.</p> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.96%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">BOOT</p> </td> <td width="83%" style="width:83.04%;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"> <p class="ListParagraph1CxSpLast">Bootstrap</p> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.96%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">SW</p> </td> <td width="83%" style="width:83.04%;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"> <p class="ListParagraph1CxSpLast">Switch node</p> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.96%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">PGND</p> </td> <td width="83%" style="width:83.04%;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"> <p class="ListParagraph1CxSpLast">Power ground</p> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.96%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1">VIN</p> </td> <td width="83%" style="width:83.04%;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"> <p class="MsoNormal">Input voltage</p> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.96%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1">VCC</p> </td> <td width="83%" style="width:83.04%;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"> <p class="MsoNormal">4.7V internal LDO output</p> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.96%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1">AGND</p> </td> <td width="83%" style="width:83.04%;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"> <p class="MsoNormal">Analog GND</p> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.96%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1">PGOOD</p> </td> <td width="83%" style="width:83.04%;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"> <p class="MsoNormal">Power good indicator output</p> </td> </tr> <tr style="height:17.0pt"> <td width="16%" style="width:16.96%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1">SS</p> </td> <td width="83%" style="width:83.04%;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"> <p class="MsoNormal">Soft-start time control pin</p> </td> </tr> </table> </div>

7. Bill of Materials

<table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" width="680" style="margin-left:-.75pt;border-collapse:collapse;border:none"> <thead> <tr style="height:17.0pt"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;background:#009EB8; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Reference</p> </td> <td width="37" nowrap style="width:27.9pt;border:solid #009EB8 1.0pt; border-left:none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Qty</p> </td> <td width="167" nowrap style="width:125.25pt;border:solid #009EB8 1.0pt; border-left:none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Part Number</p> </td> <td width="176" nowrap style="width:132.2pt;border:solid #009EB8 1.0pt; border-left:none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Description</p> </td> <td width="121" style="width:90.5pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Package</p> </td> <td width="102" nowrap style="width:76.55pt;border:solid #009EB8 1.0pt; border-left:none;background:#009EB8;padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p class="MsoNormal">Manufacturer</p> </td> </tr> </thead> <tr style="height:1.0cm"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p class="MsoNormal">U4</p> </td> <td width="37" nowrap style="width:27.9pt;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:1.0cm"> <p class="MsoNormal">1</p> </td> <td width="167" nowrap style="width:125.25pt;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:1.0cm"> <p class="MsoNormal">RTQ2822AGQVF</p> </td> <td width="176" nowrap style="width:132.2pt;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:1.0cm"> <p class="MsoNormal">Step-Down </p> <p class="MsoNormal">DC-DC Converter</p> </td> <td width="121" style="width:90.5pt;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:1.0cm"> <p class="MsoNormal">VQFN-18L </p> <p class="MsoNormal">3.5x3.5 (FC)</p> </td> <td width="102" nowrap style="width:76.55pt;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:1.0cm"> <p class="MsoNormal">RICHTEK</p> </td> </tr> <tr style="height:1.0cm"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p>C1, C2, </p> <p>C7, C15</p> </td> <td width="37" nowrap style="width:27.9pt;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:1.0cm"> <p class="MsoNormal">4</p> </td> <td width="167" nowrap style="width:125.25pt;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:1.0cm"> <p>0603B104K500CT</p> </td> <td width="176" nowrap style="width:132.2pt;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:1.0cm"> <p>0.1μF, 50V, X7R</p> </td> <td width="121" style="width:90.5pt;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:1.0cm"> <p>0603</p> </td> <td width="102" nowrap style="width:76.55pt;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:1.0cm"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height:1.0cm"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p>C3, C4, </p> <p>C5, C6</p> </td> <td width="37" nowrap style="width:27.9pt;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:1.0cm"> <p class="MsoNormal">4</p> </td> <td width="167" nowrap style="width:125.25pt;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:1.0cm"> <p>GRM21BR61E226ME44L</p> </td> <td width="176" nowrap style="width:132.2pt;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:1.0cm"> <p>22μF, 25V, X5R </p> </td> <td width="121" style="width:90.5pt;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:1.0cm"> <p>0805</p> </td> <td width="102" nowrap style="width:76.55pt;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:1.0cm"> <p class="MsoNormal">MURATA</p> </td> </tr> <tr style="height:1.0cm"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p>C11, C12, C13, C14</p> </td> <td width="37" nowrap style="width:27.9pt;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:1.0cm"> <p class="MsoNormal">4</p> </td> <td width="167" nowrap style="width:125.25pt;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:1.0cm"> <p>GRM32ER61C476KE15L</p> </td> <td width="176" nowrap style="width:132.2pt;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:1.0cm"> <p>47μF, 16V, <span lang="PT-BR" style="font-size:10.0pt;font-family:Symbol;color:black">±</span>20%, X5R, </p> </td> <td width="121" style="width:90.5pt;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:1.0cm"> <p>1210</p> </td> <td width="102" nowrap style="width:76.55pt;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:1.0cm"> <p class="MsoNormal">MURATA</p> </td> </tr> <tr style="height:1.0cm"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p>C16</p> </td> <td width="37" nowrap style="width:27.9pt;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:1.0cm"> <p class="MsoNormal">1</p> </td> <td width="167" nowrap style="width:125.25pt;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:1.0cm"> <p>0603N101J500CT</p> </td> <td width="176" nowrap style="width:132.2pt;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:1.0cm"> <p>100pF, 50V, NPO</p> </td> <td width="121" style="width:90.5pt;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:1.0cm"> <p>0603</p> </td> <td width="102" nowrap style="width:76.55pt;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:1.0cm"> <p class="MsoNormal">MURATA</p> </td> </tr> <tr style="height:17.0pt"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p>C17</p> </td> <td width="37" nowrap style="width:27.9pt;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:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="167" nowrap style="width:125.25pt;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:17.0pt"> <p>GRM188R71C473KA01</p> </td> <td width="176" nowrap style="width:132.2pt;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:17.0pt"> <p>0.047μF, 16V, <span lang="PT-BR" style="font-size:10.0pt;font-family:Symbol;color:black">±</span>10%, X7R</p> </td> <td width="121" style="width:90.5pt;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:17.0pt"> <p>0603</p> </td> <td width="102" nowrap style="width:76.55pt;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:17.0pt"> <p class="MsoNormal">MURATA</p> </td> </tr> <tr style="height:17.0pt"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p>C19</p> </td> <td width="37" nowrap style="width:27.9pt;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:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="167" nowrap style="width:125.25pt;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:17.0pt"> <p>GRM185R61A475KE11</p> </td> <td width="176" nowrap style="width:132.2pt;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:17.0pt"> <p>4.7μF, 10V, <span lang="PT-BR" style="font-size:10.0pt;font-family:Symbol;color:black">±</span>20%, X5R</p> </td> <td width="121" style="width:90.5pt;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:17.0pt"> <p>0603</p> </td> <td width="102" nowrap style="width:76.55pt;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:17.0pt"> <p class="MsoNormal">TDK</p> </td> </tr> <tr style="height:1.0cm"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p>L1 </p> </td> <td width="37" nowrap style="width:27.9pt;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:1.0cm"> <p class="MsoNormal">1</p> </td> <td width="167" nowrap style="width:125.25pt;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:1.0cm"> <p>744311068</p> </td> <td width="176" nowrap style="width:132.2pt;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:1.0cm"> <p>0.68µH, R_DC = 3.1mΩ</p> </td> <td width="121" style="width:90.5pt;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:1.0cm"> <p>7.0x7.0x4.0</p> </td> <td width="102" nowrap style="width:76.55pt;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:1.0cm"> <p class="MsoNormal">WURTH ELEKTRONIK</p> </td> </tr> <tr style="height:1.0cm"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p>R1, R14</p> <p>R16</p> </td> <td width="37" nowrap style="width:27.9pt;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:1.0cm"> <p class="MsoNormal">3</p> </td> <td width="167" nowrap style="width:125.25pt;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:1.0cm"> <p class="MsoNormal">WR06X000 PTL</p> </td> <td width="176" nowrap style="width:132.2pt;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:1.0cm"> <p>RES, 0, 1%, 0.1W</p> </td> <td width="121" style="width:90.5pt;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:1.0cm"> <p>0603</p> </td> <td width="102" nowrap style="width:76.55pt;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:1.0cm"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height:1.0cm"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p>R13, R17</p> </td> <td width="37" nowrap style="width:27.9pt;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:1.0cm"> <p class="MsoNormal">2</p> </td> <td width="167" nowrap style="width:125.25pt;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:1.0cm"> <p class="MsoNormal">WR06X1002FTL</p> </td> <td width="176" nowrap style="width:132.2pt;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:1.0cm"> <p>RES, 10k, 1%, 0.1W</p> </td> <td width="121" style="width:90.5pt;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:1.0cm"> <p>0603</p> </td> <td width="102" nowrap style="width:76.55pt;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:1.0cm"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height:1.0cm"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:1.0cm"> <p>R18, R19</p> <p>RPGOOD1</p> </td> <td width="37" nowrap style="width:27.9pt;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:1.0cm"> <p class="MsoNormal">3</p> </td> <td width="167" nowrap style="width:125.25pt;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:1.0cm"> <p class="MsoNormal">WR06X1003FTL</p> </td> <td width="176" nowrap style="width:132.2pt;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:1.0cm"> <p>RES, 100k, 1%, 0.1W</p> </td> <td width="121" style="width:90.5pt;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:1.0cm"> <p>0603</p> </td> <td width="102" nowrap style="width:76.55pt;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:1.0cm"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height:17.0pt"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p>RMODE1</p> </td> <td width="37" nowrap style="width:27.9pt;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:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="167" nowrap style="width:125.25pt;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:17.0pt"> <p class="MsoNormal">WR06X1203FTL</p> </td> <td width="176" nowrap style="width:132.2pt;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:17.0pt"> <p>RES, 120k, 1%, 0.1W</p> </td> <td width="121" style="width:90.5pt;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:17.0pt"> <p>0603</p> </td> <td width="102" nowrap style="width:76.55pt;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:17.0pt"> <p class="MsoNormal">WALSIN</p> </td> </tr> <tr style="height:17.0pt"> <td width="77" style="width:57.8pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 1.4pt 0cm 1.4pt;height:17.0pt"> <p>RMODE2</p> </td> <td width="37" nowrap style="width:27.9pt;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:17.0pt"> <p class="MsoNormal">1</p> </td> <td width="167" nowrap style="width:125.25pt;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:17.0pt"> <p class="MsoNormal">WR06X2002FTL</p> </td> <td width="176" nowrap style="width:132.2pt;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:17.0pt"> <p>RES, 20k, 1%, 0.1W</p> </td> <td width="121" style="width:90.5pt;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:17.0pt"> <p>0603</p> </td> <td width="102" nowrap style="width:76.55pt;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:17.0pt"> <p class="MsoNormal">WALSIN</p> </td> </tr> </table>

8. Typical Applications

<h3>EVB Schematic Diagram</h3> <p class="MsoNormal">RTQ2822A demo board: V_IN = 12V, V_OUT 1.2V / 12A</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image002_en.png"><img border="0" width="680" height="324" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image002_en.png" alt="Technical Document Image Preview" /></a></p> <p class="MsoNormal">Note: </p> <p class="MsoNormal">1. The capacitance values of the input and output capacitors will influence the input and output voltage ripple. </p> <p class="MsoNormal">2. MLCC capacitors have degrading capacitance at DC bias voltage, and especially smaller size MLCC capacitors will have much lower capacitance than specified.</p> <p class="MsoNormal">3. Set default soft start time 5ms by connecting C17 to 47nF. </p>

9. Measurement Results

<table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" width="684" style="margin-left:-.95pt;border-collapse:collapse;border:none"> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Output Ripple Measurement</p> </td> <td width="343" valign="top" style="width:257.25pt;border:solid #009EB8 1.0pt; border-left:none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Output Ripple Measurement</p> </td> </tr> <tr> <td width="341" style="width:255.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image003_en.png"><img border="0" width="318" height="226" id="圖片 34" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image003_en.png" alt="Technical Document Image Preview" /></a></p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image004_en.png"><img border="0" width="318" height="226" id="圖片 36" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image004_en.png" alt="Technical Document Image Preview" /></a></p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Output ripple at 10mA load: 32mVpp</p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal">Output ripple at 12A load: 10mVpp</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Output Ripple Measurement</p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal">Output Ripple Measurement</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image005_en.png"><img border="0" width="318" height="225" id="圖片 37" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image005_en.png" alt="Technical Document Image Preview" /></a></p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image006_en.png"><img border="0" width="318" height="226" id="圖片 38" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image006_en.png" alt="Technical Document Image Preview" /></a></p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Output ripple at 10mA load: 27mVpp</p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal">Output ripple at 12A load: 10mVpp</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Dynamic Load 0A to 10A Load Step (DCM Mode)</p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal">Dynamic Load 0A to 10A Load Step (DCM Mode)</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image007_en.png"><img border="0" width="317" height="226" id="圖片 39" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image007_en.png" alt="Technical Document Image Preview" /></a></p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image008_en.png"><img border="0" width="316" height="226" id="圖片 40" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image008_en.png" alt="Technical Document Image Preview" /></a></p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">V_PK-PK: 112mV</p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal">V_PK-PK: 344mV</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Start-Up Measurement from Enable</p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal">Power-Off Measurement from Enable</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image009_en.png"><img border="0" width="321" height="225" id="圖片 41" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image009_en.png" alt="Technical Document Image Preview" /></a></p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image010_en.png"><img border="0" width="318" height="225" id="圖片 42" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image010_en.png" alt="Technical Document Image Preview" /></a></p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Start-up time 5ms. Soft-start 5ms.</p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal">V_OUT discharge during power-off</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Start-Up Measurement from V_IN</p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal">Power-Off Measurement from V_IN</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image011_en.png"><img border="0" width="321" height="226" id="圖片 43" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image011_en.png" alt="Technical Document Image Preview" /></a></p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image012_en.png"><img border="0" width="319" height="226" id="圖片 44" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image012_en.png" alt="Technical Document Image Preview" /></a></p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal">Start-up time 2.7ms. Soft-start 1.575ms.</p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal">V_OUT discharge during power-off.</p> </td> </tr> </table> <p class="bady">Thermal Image: 800kHz, PWM mode</p> <table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" width="684" style="margin-left:-.95pt;border-collapse:collapse;border:none"> <tr style="height:1.0cm"> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="MsoNormal">IC Top Temperature = 77.5°C </p> <p class="MsoNormal">on V_IN = 12V, V_OUT = 1.2V, I_OUT = 12A</p> </td> <td width="343" valign="top" style="width:257.25pt;border:solid #009EB8 1.0pt; border-left:none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="MsoNormal">IC Top Temperature = 98.2°C </p> <p class="MsoNormal">on V_IN = 12V, V_OUT = 2.5V, I_OUT = 12A</p> </td> </tr> <tr> <td width="341" valign="top" style="width:255.8pt;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image013_en.jpg"><img border="0" width="299" height="224" id="Picture 3" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image013_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> <td width="343" valign="top" style="width:257.25pt;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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image014_en.jpg"><img border="0" width="301" height="226" id="Picture 25" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image014_en.jpg" alt="Technical Document Image Preview" /></a></p> </td> </tr> </table>

10. Evaluation Board Layout

<p class="bady">Figure 1 to Figure 4 are RTQ2822AGQVF Evaluation Board layout.</p> <p class="23CxSpFirst"><a name="_Hlk133339528"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image015_en.jpg"><img border="0" width="378" height="379" id="圖片 1" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image015_en.jpg" alt="一張含有 文字, 電子產品, 螢幕擷取畫面 的圖片 自動產生的描述" /></a></a></p> <p class="23CxSpLast">Figure 1. Top View (1^st layer)</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image016_en.jpg"><img border="0" width="378" height="378" id="圖片 30" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image016_en.jpg" alt="一張含有 文字, 電子產品 的圖片 自動產生的描述" /></a></p> <p class="10">Figure 2. PCB Layout—Inner Side (2^nd Layer)</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image017_en.jpg"><img border="0" width="378" height="377" id="圖片 31" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image017_en.jpg" alt="一張含有 文字, 電子產品 的圖片 自動產生的描述" /></a></p> <p class="10">Figure 3. PCB Layout—Inner Side (3^rd Layer)</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image018_en.jpg"><img border="0" width="378" height="378" id="圖片 32" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rtq2822agqvf/html-images/image018_en.jpg" alt="一張含有 文字, 電子產品 的圖片 自動產生的描述" /></a></p> <p class="MsoNormal">Figure 4. Bottom View (4^th Layer)</p>