NDLI: On lossless switched-capacitor power converters

Content Provider	IEEE Xplore Digital Library
Author	Tse, C.K. Wong, S.C. Chow, M.H.L.
Copyright Year	1986
Abstract	This paper addresses the design of efficient switched-capacitor power converters. The discussion starts with a review of the fundamental limitation of switched-capacitor circuits which shows that the topology of such circuits and the "forced" step changes of capacitor voltages are the inherent attributes of power loss. Although the argument follows from a rather trivial result from basic circuit theory, it addresses an important issue on the maximum efficiency achievable in a switched-capacitor power converter circuit. Based on the observed topological constraint of switched-capacitor power converter circuits, the simplest lossless topology for AC/DC power conversion is deduced. Also discussed is a simple version of lossless topology that achieves isolation between the source and the load. Finally, an experimental AC/DC switched-capacitor power converter, based on the proposed idea, is presented which demonstrates an improved efficiency over other existing switched-capacitor power converters. The proposed AC/DC power converter contains no inductors and thus is suitable for custom IC implementation for very low power applications.<>
Sponsorship	IEEE Power Electronics Society
Starting Page	286
Ending Page	291
Page Count	6
File Size	559137
File Format	PDF
ISSN	08858993
Volume Number	10
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switching converters Analog-digital conversion Circuit topology Switched capacitor circuits Switching circuits Voltage Circuit theory Power conversion Inductors Application specific integrated circuits
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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