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A 12-to-118-V Hybrid DCDC Converter With a Charge Converging Phase for Inductor
提出一种带电荷汇聚相的混合降压转换器，显著降低电感电流和传导损耗。
12V输入, 1-1.8V输出, 峰值效率95.4%, DCR 10.5mΩ
混合降压转换器电荷汇聚开关电容网络高效率小尺寸电感
▸创新点1：电荷汇聚相（CCP）设计通过多路径电荷汇聚至单个飞电容，显著降低电感平均电流至负载电流的一半以下，从而减少DCR传导损耗并放宽对电感体积的要求（方法创新）
▸创新点2：堆叠式开关电容网络（SCN）在输入输出间实现电压应力分配，采用低耐压（5V/1.8V）NMOS功率开关仍保持高效率，实测峰值效率达95.4%（电路拓扑创新）
▸创新点3：混合架构结合电感电荷传输与电容电荷共享，在12V-118V宽输入范围下支持1-1.8V输出，电流密度达685A/cm³（系统架构创新）
▸创新点4：通过CCP技术实现微型电感应用（2016封装，2×1.6×1mm³），DCR容忍度提升至57mΩ，饱和电流仅3.6A却可输出5A负载（被动元件优化创新）
Abstract
This article presents a 12-V-input and
1–1.8-V-output hybrid buck converter featuring a charge
converging phase (CCP-HB). During this phase, charges from
multiple paths converge into one flying capacitor, increasing
the charge accumulated on it. Such charge gets transferred
to the output in parallel with the inductor during the other
phase, and thus, the average inductor current is reduced
to consistently less than half of the load current across the
entire voltage conversion ratio (VCR) range.