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RT3674FE 是一款同步降压控制器，支援三组输出电压轨，并可完全符合 AMD SVI3 要求。RT3674FE 采用 G-NAVP<sup>TM</sup>（Green Native AVP），这是 Richtek′s 专有的拓扑架构，由具有限 DC 增益的 EA 放大器结合电流模式控制所衍生，可轻松设定 droop，以满足所有 AMD CPU/GPU 对 AVP（Adaptive Voltage Positioning）的要求。基于 G-NAVP<sup>TM</sup> 拓扑，RT3674FE 具备新一代快速反应机制（Adaptive Quick Response, AQR），可在负载暂态期间优化 AVP 效能并减少输出电容。RT3674FE 整合高精度 ADC 用于回报，并整合非挥发性记忆体（NVM）以储存自订配置，例如输出电流比例、自动加相/减相阈值、切换频率、过电流阈值或 AQR 触发位准。它亦具备完整的故障保护功能，包括过电压（OV）、欠电压（UV）、过电流（OC）及欠电压锁定（UVLO）。RT3674FE 为每组输出电压轨提供独立的使能、power good 与温度感测功能。它亦支援多项可透过 I<sup>2</sup>C 介面设定的功能。
RT3674FE 电路图
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<div class="spec-list"><ul class="lv1"><li>AMD SVI3 Rev 1.01 Compatible </li><li>4/3/2/1 Phase (Rail A) +1 Phase (Rail B) +1 Phase (Rail C) PWM Controller </li><li>G-NAVP<sup>TM</sup> (Green Native Adaptive Voltage Positioning) Topology </li><li>0.5% DAC Accuracy </li><li>Differential Remote Voltage Sensing </li><li>Built-in ADC for Reporting </li><li>Accurate Current Balance </li><li>Diode Emulation Mode (DEM) at Light Load </li><li>Fast Transient Response: Adaptive Quick Response (AQR) </li><li>OVP, OCP and UVP with Flag </li><li>Switching Frequency Setting </li><li>Auto Phase Add/Drop with DEM for Excellent Efficiency </li><li>Voltage on the Fly (VOTF) Enhancement </li><li>Acoustic Noise Suppression </li><li>Zero Load-line </li><li>Standard I<sup>2</sup>C Protocol Interface <ul class="lv2"> <li></li><li>Internal Non-Volatile Memory (NVM) to Store Custom Configurations </li><li>Current Balance Gain Adjustment for Thermal Balance </li><li>Dynamic Load-line Setting </li><li>Voltage Offset Setting </li><li>Fixed VID Setting </li><li>Protection Report and Protection Disable </li><li>Output Voltage/Output Current/Temperature/ Input Power Monitoring </li></ul> </li><li>Soldering Good Detection </li><li>Small 60-Lead WQFN Package </li></ul></div>
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RT3674FE 订购信息
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<div class="spec-list"><ul class="lv1"><li>SVI3 AMD Core Supply </li><li>Desktop and Notebook Computer </li><li>AVP Step-Down Converter </li></ul></div>
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