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ISSCC 2020Session 11 · DC-DC CONVERTERSPower Management

A Direct 12V/24V-to-1V 3W 91.2%-Efficiency Tri-State DSD Power Converter with Online VCF Rebalancing and In-Situ Precharge Rate Regulation

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📋 论文概要

该论文提出了一种直接12V/24V到1V的三态DSD功率转换器,通过在线VCF再平衡和原位预充电技术,解决了传统半桥拓扑在高压降压应用中短导通时间和功率不平衡的问题,实现了3W输出和91.2%的高效率。

💡 主要创新点

核心指标
91.2% efficiency, 3W output, 12V/24V to 1V conversion
重要性
发表年份
ISSCC 2020

🏷 关键词

三态DSD功率转换器高降压比在线VCF再平衡原位预充电高效率

📄 原文摘要

Texas Instruments, Santa Clara, CA 1 2 In industrial and automotive applications, 12V/24V power systems are widely used. In such systems, high step-down DC-DC converter is highly desirable to deliver a wide range of current directly to the point of load for high power density and efficiency [1]. In this scenario, the conventional half-bridge topology faces severe challenges of extremely short on-time and highly unbalanced power losses between high-side and low-side switches. On the other hand, switched-capacitor (SC) topologies exhibit obvious drawbacks on insufficient current handling and discrete conversion ratios (CRs). Recently, Hybrid topologies have been presented to use SC topology at the front-end to lower the high VIN voltage stress across power devices, and then use inductive topology at the back-end for current delivery. Accordingly, the inductor size can be greatly reduced to improve system

👥 作者与机构

Kang Wei1, Yogesh Ramadass2, D. Brian Ma1

University of Texas at Dallas, Richardson, TX

分类:Power Management · 年份:ISSCC 2020