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RT8809 是集成了驱动器的双相同步 Buck PWM 控制器，特别针对高性能图形处理器和电脑应用进行了优化。它将 G-NAVP<sup>TM</sup> PWM 控制器、两组包含自举二极体的 12V MOSFET 驱动器、输出电流监控和保护功能集成于单一的 WQFN-24L 4x4 封装中，采用了 DCR 和 R<sub>DS(ON)</sub> 电流检测技术。负载线电压定位和过流保护功能即依靠连续的电感 DCR 电流检测技术实现，而R<sub>DS(ON)</sub> 电流检测技术则用于精确的通道间的电流平衡，两种不同的电流取样方法各自获得了最佳的应用。RT8809 也使用了1位 VID 控制技术，这使其回馈电压得到调节并跟踪外部输入的参考电压。此外，它还具有输出电流指示、工作频率可调、Power Good 指示、外部补偿和使能/关机等功能。
RT8809 电路图
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<div class="spec-list"><ul class="lv1"><li>双相 PWM 控制器 </li><li>内嵌两组集成了自举二极体的 MOSFET 驱动器 </li><li>Green-NAVP<sup>TM </sup> 控制技术 </li><li>阈值可调的动态自动相位控制技术 </li><li>交叉抖动挂起（CJS<sup>TM</sup>） </li><li>高精度远端 GND 检测 </li><li>轻载时自动进入二极体模拟模式或超声模式 </li><li>用于电流平衡的无损的 R<sub>DS(ON)</sub> 电流检测技术 </li><li>参考电压输出精度：1% </li><li>软启动（RISS）的外部参考输入 </li><li>内嵌1位 VID　控制 </li><li>可调 OCP 阈值 </li><li>可调工作频率 </li><li>跟踪参考源的 UVP/OVP </li><li>贯通保护和无短脉冲技术 </li><li>符合 RoHS 规范，不含卤素 </li></ul></div>
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RT8809 订购信息
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RT8809
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RT8809
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<div class="spec-list"><ul class="lv1"><li>中高端 GPU 内核电源 </li><li>高端台式电脑记忆体内核电源 </li><li>低压、大电流 DC/DC 转换器 </li><li>电压调节器模组 </li></ul></div>
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