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RT8807B 是用于高性能显卡和计算机应用的两相同步 Buck 架构 PWM 控制器，它采用了电压模式 PWM 控制架构，集成了两组 5V MOSFET 驱动器和自举二极管，具有输出电流监控能力和各种保护功能，使用了 V/WQFN-24L 4x4 封装。它使用无损耗的 DCR 电流检测技术进行电感电流检测，以此进行电流平衡和过流保护工作。它采用参考电压跟踪模式进行操作，因而其参考电压是可调的，并可跟踪外部输入的参考电压。此外，它还具有输出电流指示、可调工作频率、可调软启动、电源准备好、外部补偿和使能/关机等功能。
/content/dam/richtek-eds/resources/product-specifications/rt88/rt8807b/images/circuit/76695qrywe.jpg
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<li class="mv5"> 12V 单输入，两相电源转换</li><li class="mv5"> 内置 5V 上桥栅极驱动器和 12V 下桥栅极驱动器</li><li class="mv5"> 内建 5V 稳压输出</li><li class="mv5"> 精确的内核电压调节器</li><li class="mv5"> 电感电流 DCR 检测技术</li><li class="mv5"> 外部可程序设计下沉控制技术</li><li class="mv5"> 使能控制支持外部关机</li><li class="mv5"> 可调工作频率</li><li class="mv5"> 可调软启动</li><li class="mv5"> 电源准备好和输出电流指示输出</li><li class="mv5"> 可调过流保护</li><li class="mv5"> 过压保护</li><li class="mv5"> 欠压保护</li><li class="mv5"> 过热保护</li><li class="mv5"> 符合 RoHS 规范，不含卤素</li>
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<li class="mv5"> Middle to High End GPU Core Power</li><li class="mv5"> High End Desktop PC Memory Core Power</li><li class="mv5"> Low Voltage, High Current DC / DC Converter</li><li class="mv5"> Voltage Regulator Modules</li>
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