Merged two-stage power converter architecture with soft charging switched-capacitor energy transfer

Robert C.N. Pilawa-Podgurski, David M. Giuliano, David J. Perreault

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publicationPESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Proceedings
Pages4008-4015
Number of pages8
DOIs
StatePublished - Sep 29 2008
EventPESC '08 - 39th IEEE Annual Power Electronics Specialists Conference - Rhodes, Greece
Duration: Jun 15 2008Jun 19 2008

Publication series

NamePESC Record - IEEE Annual Power Electronics Specialists Conference
ISSN (Print)0275-9306

Other

OtherPESC '08 - 39th IEEE Annual Power Electronics Specialists Conference
CountryGreece
CityRhodes
Period6/15/086/19/08

Keywords

  • Charge pumps
  • Dc-dc converters
  • Soft charging
  • Switched capacitor circuits
  • Two-stage architectures
  • Voltage regulator module

ASJC Scopus subject areas

  • Modeling and Simulation
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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