overview

1. General Description

<p class="bady">The RT6166D is a high-efficiency, single-inductor, Advanced Constant On-Time (ACOT®) monolithic synchronous buck-boost converter that can deliver up to 3A output current from a 2V to 5.5V input supply. It provides precise regulation to the digitally programmable output voltage from 1.8V to 4.975V, making it suitable for wide input supply range applications, regardless of whether the input voltage is lower than, higher than, higher than, or equal to the output voltage. This document explains the function and use of the RT6166D evaluation board (EVB), and provides information related to the configuration and settings of the evaluation board.</p>

2. Performance Specification Summary

<p class="bady">Table 1 shows the summary of the <a name="_Hlk214437634">RT6166D </a>Evaluation Board performance specification. The ambient temperature is 25°C.</p> <p class="MsoCaption">Table 1. RT6166D Evaluation Board Performance Specification Summary</p> <table class="MsoTableLightListAccent2" border="1" cellspacing="0" cellpadding="0" width="680" style="width:510.2pt;border-collapse:collapse;border:none"> <tr style="height:17.0pt"> <td width="188" style="width:141.25pt;border-top:solid #009EB8 1.0pt; border-left:solid #009EB8 1.0pt;border-bottom:none;border-right:none; background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst"><a name="_Toc203037356">Specification</a></p> </td> <td width="306" style="width:229.6pt;border:solid #009EB8 1.0pt;border-bottom: none;background:#009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Test Conditions</p> </td> <td style="border:none;border-top:solid #009EB8 1.0pt;background:#009EB8; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Min</p> </td> <td style="border:solid #009EB8 1.0pt;border-bottom:none;background:#009EB8; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Typ</p> </td> <td style="border:none;border-top:solid #009EB8 1.0pt;background:#009EB8; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">Max</p> </td> <td style="border:solid #009EB8 1.0pt;border-bottom: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="188" style="width:141.25pt;border:solid #009EB8 1.0pt;border-right: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Input Voltage Range</p> </td> <td width="306" style="width:229.6pt;border:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> </td> <td style="border-top:solid #009EB8 1.0pt;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:none;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">2</p> </td> <td style="border:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="border-top:solid #009EB8 1.0pt;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:none;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">5.5</p> </td> <td style="border: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="188" rowspan="2" style="width:141.25pt;border-top:none;border-left: solid #009EB8 1.0pt;border-bottom:solid #009EB8 1.0pt;border-right:none; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Output Current</p> </td> <td width="306" style="width:229.6pt;border-top:none;border-left:solid #009EB8 1.0pt; border-bottom:none;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpMiddle">VIN ≥ 2.5V, VOUT = 3.3V</p> </td> <td style="border:none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">0</p> </td> <td style="border-top:none;border-left:solid #009EB8 1.0pt;border-bottom: none;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="border:none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">2.5</p> </td> <td rowspan="2" style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpLast">A</p> </td> </tr> <tr style="height:17.0pt"> <td width="306" style="width:229.6pt;border:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpMiddle">VIN ≥ 3V, VOUT = 3.3V</p> </td> <td style="border-top:solid #009EB8 1.0pt;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:none;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">0</p> </td> <td style="border:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="border-top:solid #009EB8 1.0pt;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:none;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">3</p> </td> </tr> <tr style="height:17.0pt"> <td width="188" style="width:141.25pt;border:none;border-left:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Output Voltage Range</p> </td> <td width="306" style="width:229.6pt;border-top:none;border-left:solid #009EB8 1.0pt; border-bottom:none;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> </td> <td style="border:none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">1.8</p> </td> <td style="border-top:none;border-left:solid #009EB8 1.0pt;border-bottom: none;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="border:none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">4.975</p> </td> <td style="border-top:none;border-left:solid #009EB8 1.0pt;border-bottom: none;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="188" style="width:141.25pt;border:solid #009EB8 1.0pt;border-right: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">Switching Frequency</p> </td> <td width="306" style="width:229.6pt;border:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> </td> <td style="border-top:solid #009EB8 1.0pt;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:none;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="border:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">2.2</p> </td> <td style="border-top:solid #009EB8 1.0pt;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:none;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="border:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpLast">MHz</p> </td> </tr> <tr style="height:17.0pt"> <td width="188" style="width:141.25pt;border:none;border-left:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">IQ_SW</p> </td> <td width="306" style="width:229.6pt;border-top:none;border-left:solid #009EB8 1.0pt; border-bottom:none;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpMiddle">VEN = VIN = 3.6V, IOUT = 0A</p> </td> <td style="border:none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="border-top:none;border-left:solid #009EB8 1.0pt;border-bottom: none;border-right:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">4</p> </td> <td style="border:none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">7</p> </td> <td rowspan="2" style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpLast">µA</p> </td> </tr> <tr style="height:17.0pt"> <td width="188" style="width:141.25pt;border:solid #009EB8 1.0pt;border-right: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpFirst">IQ_NON-SW</p> </td> <td width="306" style="width:229.6pt;border:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpMiddle">VEN = VIN = 3.6V, IOUT = 0A, not switching</p> </td> <td style="border-top:solid #009EB8 1.0pt;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:none;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="border:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">3</p> </td> <td style="border-top:solid #009EB8 1.0pt;border-left:none;border-bottom: solid #009EB8 1.0pt;border-right:none;padding:0cm 5.4pt 0cm 5.4pt;height: 17.0pt"> <p class="ListParagraph1CxSpMiddle">5</p> </td> </tr> <tr style="height:17.0pt"> <td width="188" style="width:141.25pt;border-top:none;border-left:solid #009EB8 1.0pt; border-bottom:solid #009EB8 1.0pt;border-right:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpFirst">ISHDN</p> </td> <td width="306" style="width:229.6pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:17.0pt"> <p class="ListParagraph1CxSpMiddle">VEN = 0V, VIN = 3.6V</p> </td> <td style="border:none;border-bottom:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpMiddle">--</p> </td> <td style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpMiddle">1</p> </td> <td style="border:none;border-bottom:solid #009EB8 1.0pt;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpMiddle">2</p> </td> <td style="border:solid #009EB8 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt; height:17.0pt"> <p class="ListParagraph1CxSpLast">µA</p> </td> </tr> </table>

3. Power-Up Procedure

<h3>Suggestion Required Equipment</h3> <ul> <li>RT6166D Evaluation Board </li> <li>DC power supply capable of at least 5.5V and 7A</li> <li>Electronic load capable of 10A</li> <li>Function Generator</li> <li>Oscilloscope</li> </ul>

4. Quick Start Procedures

<p class="bady">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. </p> <p class="21"><a name="_Hlk215065237">Proper</a> measurement equipment setup and follow the procedure below. </p> <p class="Default">1) Output selection: the RT6166D has external VSEL pin to select VOUT1 or VOUT2. Pulling VSEL to high is for VOUT2 and pulling VSEL to low is for VOUT1. </p> <p class="Default">2) VOUT selection: the RT6166D has a programmable VOUTX [6:0] register, allowing output voltage adjustment from 1.8V to 4.975V with 25mV resolution per step. The VOUT1 Address = 0x04 and VOUT2 Address = 0x05</p> <p class="Default">3) With power off, connect the input power supply to the VIN and GND pins.</p> <p class="Default">4) With power off, connect the electronic load between the VOUT pin and the nearest GND pin. </p> <p class="Default">5) Turn on the power supply at the input. Make sure that the input voltage does not exceed 5.5V on the evaluation board.</p> <p class="Default">6) Pull the RT6166D En pin high to enable device, that is, switching being enabled and soft-start sequence being initiated. It is recommended that the VIN voltage is higher than VUVLO first, then the EN voltage rises above the logic-high threshold voltage (VENH), the device will be turned on.</p> <p class="Default">7) To verify the output voltage VOUT. If VSEL = H, default output voltage of RT6166D measurement is 3.45V; If VSEL = L, default output voltage of RT6166D measurement is 3.85 V. Check for the proper output voltage using a voltmeter. </p> <p class="Default">8) 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.</p>

5. Detailed Description of Hardware

<h3><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image001_en.png"><img width="600" height="600" id="圖片 3" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image001_en.png" alt="一張含有 文字, 電路, 電子產品, 電子工程 的圖片 AI 產生的內容可能不正確。" /></a></h3> <p class="bady">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> <p class="21">Test Points</p> <p class="bady">The EVB is provided with the test points and pin names listed in the table below.</p> <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="23%" style="width:23.2%;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 5.4pt 0cm 5.4pt;height:1.0cm"> <p class="23CxSpFirst">Test Point / Pin Name</p> </td> <td width="76%" style="width:76.8%;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:16.25pt"> <td width="23%" valign="top" style="width:23.2%;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt;height:16.25pt"> <p class="ListParagraph1CxSpFirst">VIN</p> </td> <td width="76%" style="width:76.8%;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:16.25pt"> <p class="ListParagraph1CxSpLast">Input voltage.</p> </td> </tr> <tr style="height:16.25pt"> <td width="23%" valign="top" style="width:23.2%;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt;height:16.25pt"> <p class="ListParagraph1CxSpFirst">VOUT</p> </td> <td width="76%" style="width:76.8%;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:16.25pt"> <p class="ListParagraph1CxSpLast">Output voltage.</p> </td> </tr> <tr style="height:16.25pt"> <td width="23%" valign="top" style="width:23.2%;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt;height:16.25pt"> <p class="ListParagraph1CxSpFirst">GND</p> </td> <td width="76%" style="width:76.8%;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:16.25pt"> <p class="ListParagraph1CxSpLast">Ground.</p> </td> </tr> <tr style="height:16.25pt"> <td width="23%" valign="top" style="width:23.2%;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt;height:16.25pt"> <p class="ListParagraph1CxSpFirst">EN</p> </td> <td width="76%" style="width:76.8%;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:16.25pt"> <p class="ListParagraph1CxSpLast">Enable test point.</p> </td> </tr> <tr style="height:16.25pt"> <td width="23%" valign="top" style="width:23.2%;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt;height:16.25pt"> <p class="ListParagraph1CxSpFirst">LX1</p> </td> <td width="76%" style="width:76.8%;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:16.25pt"> <p class="ListParagraph1CxSpLast">Switching node1 of LX</p> </td> </tr> <tr style="height:16.25pt"> <td width="23%" valign="top" style="width:23.2%;border:solid #009EB8 1.0pt; border-top:none;padding:0cm 5.4pt 0cm 5.4pt;height:16.25pt"> <p class="ListParagraph1CxSpFirst">LX2</p> </td> <td width="76%" style="width:76.8%;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:16.25pt"> <p class="ListParagraph1CxSpLast">Switching node2 of LX</p> </td> </tr> <tr style="height:16.25pt"> <td width="23%" style="width:23.2%;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:16.25pt"> <p class="ListParagraph1CxSpFirst">VSEL</p> </td> <td width="76%" style="width:76.8%;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:16.25pt"> <p class="ListParagraph1CxSpLast">Output voltage selection pin.</p> </td> </tr> </table>

6. Bill of Materials

<div> <table class="TableNormal1" border="1" cellspacing="0" cellpadding="0" width="680" style="border-collapse:collapse;border:none"> <thead> <tr style="height:18.05pt"> <td width="85" style="width:63.55pt;border:solid #009EB8 1.0pt;background: #009EB8;padding:0cm 0cm 0cm 0cm;height:18.05pt"> <p class="TableParagraph">Reference</p> </td> <td width="38" style="width:1.0cm;border:solid #009EB8 1.0pt;border-left:none; background:#009EB8;padding:0cm 0cm 0cm 0cm;height:18.05pt"> <p class="TableParagraph">Count</p> </td> <td width="170" style="width:127.6pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:18.05pt"> <p class="TableParagraph">Part Number</p> </td> <td width="104" style="width:77.95pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:18.05pt"> <p class="TableParagraph">Value</p> </td> <td width="104" style="width:77.95pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:18.05pt"> <p class="TableParagraph">Description</p> </td> <td width="95" style="width:70.9pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:18.05pt"> <p class="TableParagraph">Package</p> </td> <td width="85" style="width:63.9pt;border:solid #009EB8 1.0pt;border-left: none;background:#009EB8;padding:0cm 0cm 0cm 0cm;height:18.05pt"> <p class="TableParagraph">Manufacturer</p> </td> </tr> </thead> <tr style="height:1.0cm"> <td width="85" style="width:63.55pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">U1</p> </td> <td width="38" style="width:1.0cm;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"> <p class="MsoNormal">1</p> </td> <td width="170" style="width:127.6pt;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"> <p class="MsoNormal">RT6166DP-A</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">RT6166DP-A</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">Buck-Boost Converter</p> </td> <td width="95" style="width:70.9pt;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"> <p class="MsoNormal">WL-CSP-15B 1.4x2.3</p> </td> <td width="85" style="width:63.9pt;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"> <p class="MsoNormal">RICHTEK</p> </td> </tr> <tr style="height:1.0cm"> <td width="85" style="width:63.55pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">C1, C2</p> </td> <td width="38" style="width:1.0cm;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"> <p class="MsoNormal">2</p> </td> <td width="170" style="width:127.6pt;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"> <p class="MsoNormal">GRM31CR71A226KE15</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">22µF</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">22µF/16V/X5R</p> </td> <td width="95" style="width:70.9pt;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"> <p class="MsoNormal">1206</p> </td> <td width="85" style="width:63.9pt;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"> <p class="MsoNormal">Murata</p> </td> </tr> <tr style="height:1.0cm"> <td width="85" style="width:63.55pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">C4</p> </td> <td width="38" style="width:1.0cm;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"> <p class="MsoNormal">1</p> </td> <td width="170" style="width:127.6pt;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"> <p class="MsoNormal">GRM033R60J104KE19D</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">100nF</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">100nF/6.3V/X5R</p> </td> <td width="95" style="width:70.9pt;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"> <p class="MsoNormal">0201</p> </td> <td width="85" style="width:63.9pt;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"> <p class="MsoNormal">Murata</p> </td> </tr> <tr style="height:1.0cm"> <td width="85" style="width:63.55pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">C6</p> </td> <td width="38" style="width:1.0cm;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"> <p class="MsoNormal">1</p> </td> <td width="170" style="width:127.6pt;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"> <p class="MsoNormal">GRM155R60J106ME15</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">10µF</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">10µF/6.3V/X5R</p> </td> <td width="95" style="width:70.9pt;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"> <p class="MsoNormal">0402</p> </td> <td width="85" style="width:63.9pt;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"> <p class="MsoNormal">Murata</p> </td> </tr> <tr style="height:1.0cm"> <td width="85" style="width:63.55pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">C8, C9</p> </td> <td width="38" style="width:1.0cm;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"> <p class="MsoNormal">2</p> </td> <td width="170" style="width:127.6pt;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"> <p class="MsoNormal">GRM188R61A226ME15D</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">22µF</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">22µF/10V/X5R</p> </td> <td width="95" style="width:70.9pt;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"> <p class="MsoNormal">0603</p> </td> <td width="85" style="width:63.9pt;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"> <p class="MsoNormal">Murata</p> </td> </tr> <tr style="height:1.0cm"> <td width="85" style="width:63.55pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">R1, R2</p> </td> <td width="38" style="width:1.0cm;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"> <p class="MsoNormal">2</p> </td> <td width="170" style="width:127.6pt;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"> <p class="MsoNormal">WR06X000 PTL</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">0Ω</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">0Ω</p> </td> <td width="95" style="width:70.9pt;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"> <p class="MsoNormal">0603</p> </td> <td width="85" style="width:63.9pt;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"> <p class="MsoNormal">WASIN</p> </td> </tr> <tr style="height:1.0cm"> <td width="85" style="width:63.55pt;border:solid #009EB8 1.0pt;border-top:none; padding:0cm 0cm 0cm 0cm;height:1.0cm"> <p class="MsoNormal">L3</p> </td> <td width="38" style="width:1.0cm;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"> <p class="MsoNormal">1</p> </td> <td width="170" style="width:127.6pt;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"> <p class="MsoNormal">XGL4015-471MEC</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">0.47µH</p> </td> <td width="104" style="width:77.95pt;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"> <p class="MsoNormal">0.47µH</p> </td> <td width="95" style="width:70.9pt;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"> <p class="MsoNormal">L-4X4</p> </td> <td width="85" style="width:63.9pt;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"> <p class="MsoNormal">Coilcraft</p> </td> </tr> </table> </div>

7. Typical Applications

<p class="21">EVB Schematic Diagram</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image002_en.png"><img border="0" width="684" height="429" id="Picture 3" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image002_en.png" alt="Technical Document Image Preview" /></a></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.</p> <p class="MsoNormal">Measure Result</p> <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"> <p class="MsoNormal">Quiescent Current vs. Input Voltage</p> </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"> <p class="MsoNormal">Efficiency vs. Output Current</p> </td> </tr> <tr style="height:168.2pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:168.2pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image003_en.png"><img border="0" width="292" height="223" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image003_en.png" alt="一張含有 文字, 行, 繪圖, 圖表 的圖片 AI 產生的內容可能不正確。" /></a></p> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:168.2pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image004_en.png"><img border="0" width="293" height="224" id="圖片 14" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image004_en.png" alt="一張含有 文字, 行, 繪圖, 圖表 的圖片 AI 產生的內容可能不正確。" /></a></p> </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"> <p class="MsoNormal">PFM Switching Waveforms</p> <p class="MsoNormal">(Buck Operation)</p> </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"> <p class="MsoNormal">PFM Switching Waveforms</p> <p class="MsoNormal">(Buck-Boost Operation)</p> </td> </tr> <tr style="height:172.95pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:172.95pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image005_en.png"><img border="0" width="292" height="202" id="圖片 18" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image005_en.png" alt="一張含有 文字, 行, 繪圖, 圖表 的圖片 AI 產生的內容可能不正確。" /></a></p> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:172.95pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image006_en.png"><img border="0" width="293" height="204" id="圖片 22" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image006_en.png" alt="一張含有 文字, 行, 繪圖, 字型 的圖片 AI 產生的內容可能不正確。" /></a></p> </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"> <p class="MsoNormal">PFM Switching Waveforms</p> <p class="MsoNormal">(Boost Operation)</p> </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"> <p class="MsoNormal">PWM Switching Waveforms</p> <p class="MsoNormal">(Buck Operation)</p> </td> </tr> <tr> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image007_en.png"><img border="0" width="303" height="208" id="圖片 24" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image007_en.png" alt="一張含有 文字, 行, 繪圖, 圖表 的圖片 AI 產生的內容可能不正確。" /></a></p> </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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image008_en.png"><img border="0" width="303" height="214" id="圖片 25" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image008_en.png" alt="Technical Document Image Preview" /></a></p> </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"> <p class="MsoNormal">PWM Switching Waveforms</p> <p class="MsoNormal">(Buck-Boost Operation)</p> </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"> <p class="MsoNormal">PWM Switching Waveforms</p> <p class="MsoNormal">(Boost Operation)</p> </td> </tr> <tr style="height:184.2pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 1.4pt 0cm 1.4pt;height:184.2pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image009_en.png"><img border="0" width="303" height="211" id="圖片 26" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image009_en.png" alt="一張含有 文字, 螢幕擷取畫面, 行, 字型 的圖片 AI 產生的內容可能不正確。" /></a></p> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 1.4pt 0cm 1.4pt;height:184.2pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image010_en.png"><img border="0" width="303" height="219" id="圖片 27" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image010_en.png" alt="一張含有 文字, 螢幕擷取畫面, 字型, 行 的圖片 AI 產生的內容可能不正確。" /></a></p> </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"> <p class="MsoNormal">Line Transient Response (Light Load)</p> </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"> <p class="MsoNormal">Line Transient Response (Heavy Load)</p> </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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image011_en.png"><img border="0" width="292" height="206" id="圖片 29" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image011_en.png" alt="一張含有 文字, 行, 螢幕擷取畫面, 繪圖 的圖片 AI 產生的內容可能不正確。" /></a></p> </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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image012_en.png"><img border="0" width="293" height="207" id="圖片 31" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image012_en.png" alt="一張含有 文字, 行, 螢幕擷取畫面, 圖表 的圖片 AI 產生的內容可能不正確。" /></a></p> </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"> <p class="MsoNormal">Load Transient Response (Buck)</p> </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"> <p class="MsoNormal">Load Transient Response (Buck-Boost)</p> </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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image013_en.png"><img border="0" width="292" height="206" id="圖片 34" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image013_en.png" alt="一張含有 文字, 行, 螢幕擷取畫面, 字型 的圖片 AI 產生的內容可能不正確。" /></a></p> </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"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image014_en.png"><img border="0" width="293" height="202" id="圖片 35" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image014_en.png" alt="一張含有 文字, 行, 螢幕擷取畫面, 繪圖 的圖片 AI 產生的內容可能不正確。" /></a></p> </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"> <p class="MsoNormal">Load Transient Response (Boost)</p> </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"> <p class="MsoNormal">Start-Up Waveforms (Light Load)</p> </td> </tr> <tr style="height:168.2pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:168.2pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image015_en.png"><img border="0" width="292" height="205" id="圖片 43" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image015_en.png" alt="一張含有 文字, 行, 螢幕擷取畫面, 繪圖 的圖片 AI 產生的內容可能不正確。" /></a></p> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:168.2pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image016_en.png"><img border="0" width="293" height="225" id="圖片 44" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image016_en.png" alt="一張含有 文字, 行, 繪圖, 圖表 的圖片 AI 產生的內容可能不正確。" /></a></p> </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"> <p class="MsoNormal">Start-Up Waveforms (Heavy Load)</p> </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"> <p class="MsoNormal">Maximum Output Current vs. Input Voltage</p> </td> </tr> <tr style="height:172.95pt"> <td width="306" style="width:229.8pt;border:solid #009EB8 1.0pt;border-top: none;padding:0cm 5.4pt 0cm 5.4pt;height:172.95pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image017_en.png"><img border="0" width="292" height="218" id="圖片 45" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image017_en.png" alt="一張含有 文字, 行, 圖表, 繪圖 的圖片 AI 產生的內容可能不正確。" /></a></p> </td> <td width="307" style="width:230.35pt;border-top:none;border-left:none; border-bottom:solid #009EB8 1.0pt;border-right:solid #009EB8 1.0pt; padding:0cm 5.4pt 0cm 5.4pt;height:172.95pt"> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image018_en.png"><img border="0" width="293" height="238" id="圖片 46" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image018_en.png" alt="一張含有 文字, 行, 繪圖, 螢幕擷取畫面 的圖片 AI 產生的內容可能不正確。" /></a></p> </td> </tr> </table> <p class="MsoNormal">Note 1. 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.</p>

8. Evaluation Board Layout

<p class="bady">Figure 1 to Figure 4 are RT6166DP-A’s evaluation board layout. This board size is 70mm x 50mm and is constructed on four-layer PCB.</p> <p class="23CxSpFirst"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image019_en.png"><img border="0" width="506" height="354" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image019_en.png" alt="一張含有 電路, 電子工程, 電子產品, 螢幕擷取畫面 的圖片 AI 產生的內容可能不正確。" /></a></p> <p class="23CxSpMiddle">Figure 1. Top View (1^st layer)</p> <p class="MsoNormal"><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image020_en.png"><img border="0" width="480" height="347" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image020_en.png" alt="一張含有 文字, 螢幕擷取畫面, 圓形, 設計 的圖片 AI 產生的內容可能不正確。" /></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_rt6166dp-a/html-images/image021_en.png"><img border="0" width="497" height="354" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image021_en.png" alt="一張含有 文字, 螢幕擷取畫面, 圓形, 設計 的圖片 AI 產生的內容可能不正確。" /></a></p> <p class="10">Figure 3. PCB Layout—Inner Side (3^rd Layer)</p> <p class="MsoNormal"><i><a class="fancybox" href="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image022_en.png"><img border="0" width="506" height="359" id="圖片 1" src="/content/dam/richtek-eds/resources/evaluation-boards/evb_rt6166dp-a/html-images/image022_en.png" alt="一張含有 文字, 螢幕擷取畫面, 圓形, 字型 的圖片 AI 產生的內容可能不正確。" /></a></i></p> <p class="10">Figure 4. Bottom View (4^th Layer)</p>