Merged Two-Stage Power ConverterArchitecture with Soft Charging Switched-Capacitor Energy Transfer

被引：141

作者：

Pilawa-Podgurski, Robert C. N. ^{[1
]}

Giuliano, David M. ^{[1
]}

Perreault, David J. ^{[1
]}

机构：

[1] MIT, Electromagnet & Elect Syst Lab, Cambridge, MA 02139 USA

来源：

2008 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-10 | 2008年

关键词：

switched capacitor circuits; two-stage architectures; soft charging; dc-dc converters; charge pumps; voltage regulator module;

D O I：

10.1109/PESC.2008.4592581

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a two-stage architecture that combines a large step-down switched-capacitor transformation stage with a high-bandwidth magnetic regulation stage. The proposed design is particularly well-suited for an integrated CMOS process, as it makes use of the available on-die device characteristics. In such a process, the two-stage architecture presented offers high efficiency, high power density, and high-bandwidth regulation. We show that by merging the switched-capacitor stage and the regulation stage in a specific manner, further performance improvements can be attained. When the fast-switching regulation stage is used to provide soft charging of the switched-capacitor stage, a substantial improvement in performance is possible. An experimental prototype, implemented using discrete components, validates the approach.

引用

页码：4008 / 4015

页数：8

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