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RT8871A/B是CPU供电应用的4/3/2/1相同步Buck控制器，整合了两组MOSFET驱动器和为北桥芯片组供电的单相同步Buck控制器，整合了MOSFET驱动器。它采用差分电感DCR电流检测技术完成相间电流平衡和主动电压定位，还具有工作频率可调、Power Good指示、外部误差放大器补偿、过压保护、过流保护和使能/关机等特性，可满足多种不同应用的需要，其封装为WQFN-48L 7x7和WQFN-48L 6x6。
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<li class="mv5">12V 供电</li><li class="mv5">可以4/3/2/1相工作为CPU内核供电</li><li class="mv5">内建3组MOSFET驱动器（CPU 2 + NB 1）</li><li class="mv5">内部稳压的5V输出</li><li class="mv5">支持 AMD AM2 6位并行和AM2+7位串行VID 编码与双OCP</li><li class="mv5">支持3.4MHz高速I<sup>2</sup>C操作</li><li class="mv5">支持CORE和NB部分的可编程负载线</li><li class="mv5">连续电感电流差分DCR检测技术</li><li class="mv5">可调工作频率（典型值为 300kHz）</li><li class="mv5">在节能模式下可选1/2相工作</li><li class="mv5">内核电源V<sub>CORE</sub> 控制器采用相位交错技术</li><li class="mv5">Power Good指示</li><li class="mv5">可调过电流保护</li><li class="mv5">过电压保护</li><li class="mv5">48引脚WQFN封装</li><li class="mv5">符合RoHS规范且不含卤素</li>
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<li class="mv5"> 台式计算机 CPU 内核电源</li><li class="mv5"> 低压、大电流 DC/DC 转换器</li>
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