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RT8809A/B 是集成了驅動器的雙相同步 Buck PWM 控制器，特別針對高性能圖形處理器和電腦應用進行了優化。它將 G-NAVP<sup>TM</sup> PWM 控制器、兩組包含自舉二極體的 12V MOSFET 驅動器、輸出電流監控和保護功能集成于單一的 WQFN-24L 4x4 封裝中，採用了 DCR 和 R<sub>DS(ON)</sub> 電流檢測技術。負載線電壓定位和過流保護功能即依靠連續的電感 DCR 電流檢測技術實現，而R<sub>DS(ON)</sub> 電流檢測技術則用於精確的通道間的電流平衡，通過這種不同方法的利用達到了性能最優化化的效果。它採用了1位元 VID 控制技術對回饋電壓進行調節並使之追蹤外部輸入的參考電壓，還具有工作頻率可調、外部補償和使能/關機等功能。
RT8809A/RT8809B 電路圖
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<div class="spec-list"><ul class="lv1"><li>雙相 PWM 控制器 </li><li>內嵌兩組集成了自舉二極體的 MOSFET 驅動器 </li><li>Green-NAVP<sup>TM</sup> 控制技術 </li><li>閾值可調的動態自動相位控制技術 </li><li>交叉抖動掛起（CJS<sup>TM</sup>） </li><li>高精度遠端 GND 檢測 </li><li>輕載時自動進入二極體模擬模式或超聲模式 </li><li>用於電流平衡的無損的 R<sub>DS(ON)</sub> 電流檢測技術 </li><li>無損耗的 DCR 電流檢測技術用於 AVP 和 OCP </li><li>參考電壓輸出精度：1% </li><li>軟啟動（RISS）的外部參考輸入 </li><li>內嵌1位 VID　控制 </li><li>可調 OCP 閾值 </li><li>可調工作頻率 </li><li>跟蹤參考源的 UVP/OVP </li><li>貫通保護和無短脈衝技術 </li><li>符合 RoHS 規範，不含鹵素 </li></ul></div>
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RT8809A/RT8809B 訂購資訊
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RT8809A/RT8809B
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<div class="spec-list"><ul class="lv1"><li>中高端 GPU 內核電源 </li><li>高端臺式電腦記憶體內核電源 </li><li>低壓、大電流 DC/DC 轉換器 </li><li>電壓調節器模組 </li></ul></div>
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