Design and realization of a switched-capacitor AC-DC converter with a low output-voltage ripple

Author

Ueno, Fumio ; Inoue, Takahiro ; Oota, Ichirou ; Lian, Huang Bing

Author_Institution

Fac. of Eng., Kumamoto Univ., Japan

fYear

1990

fDate

12-14 Aug 1990

Firstpage

1087

Abstract

An AC-DC converter using a new switched-capacitor (SC) transformer and its design are presented. The maximum voltage of capacitors is 1/n times that of a capacitor- input-type rectifier circuit, where n is the number of charge-transfer capacitors. The output voltage ripple is small, since the equivalent smoothing capacitor value is n times that of conventional SC transformers (series-parallel switching type). Using the design method presented, a test circuit was designed. The experimental results of the test circuit show that the efficiency of the SC transformer is very high (95%) and the maximum output power is 40 W

Keywords

network synthesis; power convertors; switched capacitor networks; 40 W; 95 percent; AC-DC converter; SC transformers; design method; output-voltage ripple; series-parallel switching type; switched-capacitor; AC-DC power converters; Circuit testing; Clocks; DC-DC power converters; Material storage; Power supplies; Regulators; Smoothing methods; Switched capacitor circuits; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1990., Proceedings of the 33rd Midwest Symposium on

Conference_Location

Calgary, Alta.

Print_ISBN

0-7803-0081-5

Type

conf

DOI

10.1109/MWSCAS.1990.140914

Filename

140914