Soft-charging operation of switched-capacitor DC-DC converters with an inductive load

Yutian Lei, Robert Carl Nikolai Pilawa Podgurski

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

Abstract

Switched-capacitor (SC) converters are becoming a strong candidate for high power density converters. Traditionally, these SC converters have suffered from two main problems: capacitor charge transfer loss and lossy output voltage regulation. This paper proposes a hybrid SC converter topology that addresses both problems simultaneously. The proposed topology adds a single small inductor to the SC converter and compares favorably in terms of efficiency and power density to both SC converters and buck converters. Unlike SC converters, it can maintain its efficiency for output voltages that are lower than the nominal value determined by the topology. A discrete prototype with a large step-down ratio of over 8-to-1 and a power rating of 30 W has been designed and built to demonstrate the potential of the hybrid converter.

Original languageEnglish (US)
Title of host publicationAPEC 2014 - 29th Annual IEEE Applied Power Electronics Conference and Exposition
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2112-2119
Number of pages8
ISBN (Print)9781479923250
DOIs
StatePublished - Jan 1 2014
Event29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014 - Fort Worth, TX, United States
Duration: Mar 16 2014Mar 20 2014

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC

Other

Other29th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2014
Country/TerritoryUnited States
CityFort Worth, TX
Period3/16/143/20/14

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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