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RT3674AJ 是一款支援三組輸出電源軌（Triple Output Rails）的同步降壓控制器，並可完整符合 AMD SVI3 規範要求。RT3674AJ 採用 Richtek 專有的 G-NAVP（Green Native AVP）架構，其設計源自電流模式控制下誤差放大器有限直流增益特性，可輕鬆設定電壓下垂（Droop），以滿足 AMD CPU/GPU 對自適應電壓定位（AVP, Adaptive Voltage Positioning）的需求。 基於 G-NAVP™ 架構，RT3674AJ 進一步導入新一代自適應快速響應（AQR, Adaptive Quick Response）機制，可在負載瞬態變化期間優化 AVP 性能，並減少輸出電容需求。 RT3674AJ 內建高精度 ADC，可提供系統監測與回報功能，並整合非揮發性記憶體（NVM），可儲存各種客製化設定，例如輸出電流比例、相位自動增加/減少門檻值、自動切換頻率、過電流保護門檻以及 AQR 觸發電平等參數。 此外，產品具備完整保護機制，包括過壓保護（OVP）、欠壓保護（UVP）、過電流保護（OCP）及欠壓鎖定保護（UVLO）。RT3674AJ 並為每組輸出電源軌提供獨立的使能控制（Enable）、Power Good 狀態指示及溫度感測功能。 產品亦支援透過 I²C 介面進行多項功能設定與控制。 建議接面溫度範圍為 -40°C 至 125°C。
RT3674AJ 電路圖
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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 (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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RT3674AJ 訂購資訊
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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 Buck Converter </li></ul></div>
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