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RT8115A為一款輸入電壓5V/12V的高效率單相同步降壓型DC/DC控制器，採用Green Voltage Mode (GVM<sup>TM</sup>)控制，可以提高輕負載條件下轉換器的效率。在輕載條件下，IC自動操作在diode emulation mode，該模式以恆定導通時間PFM操作以降低開關頻率，進而提高轉換效率。隨著負載電流的增大，RT8115A會工作在 continuous conduction mode ，以固定頻率PWM操作。由於RT8115A嵌入了MOSFET柵極驅動器，因此具有較高的驅動能力，可支持的驅動電壓高達12V的高輸出電流的應用。RT8115A採用無損低側MOSFET R<sub>DS(ON)</sub>電流檢測技術的過電流保護，閾值可由LGATE引腳(LGOCS)設定。其它特點包括電源良好指示、始能/停止控制和內部軟啟動。RT8115A還提供了故障保護功能，以保護功率級的輸出。上述功能為客戶提供高效率且具有成本效益的電源轉換解決方案。RT8115A提供WDFN-10L 3x3封裝。
RT8115A 電路圖
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<div class="spec-list"><ul class="lv1"><li>節能控制模式 Green Voltage Mode (GVM<sup>TM</sup>) </li><li>輕載效率高 </li><li>5V至12V驅動器電壓 </li><li>內鉛高驅動能力N-MOSFET柵極驅動器 </li><li>內部300kHz固定頻率震盪器 </li><li>85%最大PWM工作週期 </li><li>電源良好指示 </li><li>始能/停止控制 </li><li>自適零電流檢測 </li><li>内置軟啟動 </li><li>無損低側MOSFET R<sub>DS(ON)</sub>電流檢測技術的過電流保護 </li><li>LGATE過電流設定(LGOCS) </li><li>輸出電壓監測 </li><li>OCP, UVP, OVP, OTP, UVLO </li><li>符合 RoHS 規範且不含鹵素 </li></ul></div>
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RT8115A 訂購資訊
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<div class="spec-list"><ul class="lv1"><li>主機板、記憶體、晶片電源 </li><li>顯示卡,GPU/記憶體核心電源 </li><li>低壓大電流DC/DC調節器 </li></ul></div>
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