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Product Spec Banner
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RT8811B 是特別針對高性能圖形處理器和電腦應用進行了優化的2/1相同步 Buck PWM 控制器。它將固定導通時間（COT） PWM 控制器、包含自舉二極體的兩組 MOSFET 驅動器、通道間電流平衡功能、過壓保護、欠壓保護、電流限制和熱關機保護等功能集成于單一的 WQFN-24L 4x4 封裝中。它採用了 R<sub>DS(ON)</sub> 電流檢測技術，電流限制即依靠連續的電感電流感知，R<sub>DS(ON)</sub> 電流檢測也被用於精確的通道間電流平衡。RT8811B 使用了外部輸入的參考電壓和 PWM-VID 動態電壓控制技術，這使其回饋電壓得到調節並跟蹤外部輸入的參考電壓。此外，它還具有工作頻率可調、動態相數調整、內/外軟啟動、Power Good 指示和使能控制等功能。
RT8811B 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>外部參考輸入控制 </li><li>PWM-VID 動態電壓控制技術 </li><li>動態相數控制 </li><li>用於電流平衡的無損 R<sub>DS(ON)</sub> 電流檢測技術 </li><li>內部固定、外部可調的軟啟動 </li><li>內建 220mA 5V LDO </li><li>可調電流限制閾值 </li><li>可調開關工作頻率 </li><li>UVP/OVP </li><li>貫通保護和免除短脈衝技術 </li><li>供電電壓：4.5V~13.2V </li><li>支援超低輸出電壓作為待機電壓 </li><li>熱關機保護 </li><li>過熱警告指示 </li><li>Power Good 指示 </li><li>符合 RoHS 規範，不含鹵素 </li></ul></div>
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RT8811B 訂購資訊
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RT8811B
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RT8811B
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<div class="spec-list"><ul class="lv1"><li>主機板和高端 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>電壓調節模組 </li></ul></div>
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