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ISSCC 2023Session 11 · USB AND COMPUTE POWER DELIVERYPower Management

A Compact 12V-to-1V 91.8% Peak Efficiency Hybrid Resonant Switched-Capacitor Parallel Inductor (ReSC-PL) Buck Converter

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📋 论文概要

该论文提出了一种紧凑型12V-to-1V混合谐振开关电容并联电感(ReSC-PL)降压转换器,解决了高电压转换比下效率与电流密度之间的权衡问题。通过引入并联电感和谐振开关电容结构,实现了91.8%的峰值效率和高功率密度。

💡 主要创新点

核心指标
91.8% peak efficiency, 12V-to-1V conversion
重要性
发表年份
ISSCC 2023

🏷 关键词

混合谐振开关电容并联电感降压转换器高电压转换比高效率

📄 原文摘要

Instituto Superior Tecnico/University of Lisboa, Lisbon, Portugal 1 2 High power density, high efficiency, and high voltage conversion ratio (VCR) DC-DC converters are in great demand for portable devices and autonomous robots. The doublestep-down (DSD) converter and its variants are promising solutions for their reduced voltage stress on the power transistors, extended duty-cycle (D), and higher equivalent switching frequency [1–4]. However, all these topologies suffer from the trade-off between efficiency and current density, since all the output current IO flows through the power inductors, we have to either use bulky inductors for high efficiency or use small inductors for high current density. To deal with this, [5] proposed an always-dual-path (ADP) hybrid converter that can reduce the inductor current IL to 0.5IO, but at the cost of a larger inductor current ripple ∆IL. Besides, [6] proposed a hybrid switched-capacitor

👥 作者与机构

Guigang Cai1, Yan Lu1, Rui P. Martins1,2

University of Macau, Macau, China

分类:Power Management · 年份:ISSCC 2023