Resonant switched capacitor converter with high efficiency

Masahito Shoyama, Toshiyuki Naka, Tamotsu Ninomiya

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

63 Citations (Scopus)


Conventional switched capacitor converters have an inherent drawback that their efficiency is much decreased as the output current is increased. This inherent drawback is due to a periodical forced charging and discharging operation in the internal switched capacitors accompanied by a large capacitor current, so that their efficiency can not be increased by decreasing its internal resistance. As a result, conventional switched capacitor converters have been limited to be used with a very small output current. This paper presents some novel switched capacitor converter topologies that use a resonant operation instead of the forced charging and discharging operation. Their advantage over conventional switched capacitor converters is a high efficiency even in a high output current region. The operation analysis and steady-state characteristics are described in detail for a half buck type switched capacitor converter, and they are confirmed by experiments.

Original languageEnglish
Title of host publication2004 IEEE 35th Annual Power Electronics Specialists Conference, PESC04
Number of pages7
Publication statusPublished - 2004
Event2004 IEEE 35th Annual Power Electronics Specialists Conference, PESC04 - Aachen, Germany
Duration: Jun 20 2004Jun 25 2004

Publication series

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


Other2004 IEEE 35th Annual Power Electronics Specialists Conference, PESC04

All Science Journal Classification (ASJC) codes

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


Dive into the research topics of 'Resonant switched capacitor converter with high efficiency'. Together they form a unique fingerprint.

Cite this