Design and analysis of switched-capacitor-based step-up resonant converters

Author

Law, K.K. ; Cheng, K.W.E. ; Yeung, Y. P Benny

Author_Institution

Dept. of Electr. Eng., Hong Kong Polytech. Univ., China

Volume

52

Issue

5

fYear

2005

fDate

5/1/2005 12:00:00 AM

Firstpage

943

Lastpage

948

Abstract

A switched-capacitor-based step-up resonant converter is proposed. The voltage conversion of the converters is in step-up mode. By adding a different number of switched-capacitor cells, different output voltage conversion ratios can be obtained. The voltage conversion ratio from 2 to any whole number can therefore be generated by these switching-capacitor techniques. A resonant tank is used to assist in zero-current switching hence the current spike, which usually exists for classical switched-capacitor can be eliminated. Both high-frequency operations and high efficiency are possible. Generalized analysis and design method of the converters are also presented. Experimental results verified the theoretical analysis.

Keywords

capacitor switching; charge exchange; convertors; switched capacitor networks; charge transfer; current spike; resonant converter; resonant tank; step-up resonant converters; switched-capacitor; voltage conversion; zero-current switching; Capacitors; Inductors; Magnetic resonance; Power conversion; RLC circuits; Switched-mode power supply; Switching circuits; Switching converters; Voltage; Zero current switching; Capacitor switching; charge transfer; resonant converter; switched capacitor;

fLanguage

English

Journal_Title

Circuits and Systems I: Regular Papers, IEEE Transactions on

Publisher

ieee

ISSN

1549-8328

Type

jour

DOI

10.1109/TCSI.2004.840482

Filename

1427903