A 5A 94.5% Peak Efficiency 9~16V-to-1V Dual-Path Series-Capacitor Converter with Full Duty Range and Low V·A Metric

📋 论文概要

该论文提出了一种双路径串联电容转换器，实现了9~16V至1V的电压转换，输出电流5A，峰值效率94.5%。主要解决了传统串联电容转换器占空比范围受限（仅D<50%）的问题，通过双路径结构实现了全占空比范围操作并降低了VA指标。

💡 主要创新点

• 提出双路径串联电容拓扑，突破传统DSD转换器的占空比限制，支持D>50%的稳态操作。
• 通过优化开关电容网络和电感配置，降低了器件的电压应力与VA乘积，提升效率。

🏷 关键词

📄 原文摘要

ratio, high efficiency and compact 12V-to-1V DC-DC converters become increasingly important. Double step-down (DSD) converters [1–2], also known as series-capacitor converters, offer a promising solution using the capacitors to reduce the high voltage stress and to extend the duty cycles, however, at the cost of multiple inductors and limited duty cycle range (D<50%). To break the duty cycle limit, some previous work employs extra power switches or capacitor cross-connected (CCC) design for D>50% operation during a short transient period [3–4]. The steady-state operation, however, is still not allowed and limits the transient response and output voltage range. Besides, DSD converters suffer from limited efficiency since the switch voltage stress is still high. To quantify the switch losses

👥 作者与机构

Xu Yang, Linhu Zhao, Menglian Zhao, Zhichao Tan, Yong Ding, Wuhua Li, Wanyuan Qu

Zhejiang University, Hangzhou, China As the power demand of computing cores grows explosively, large conversion