A flying-capacitor ZVS PWM 1.5 kW DC-to-DC converter with half of the input voltage across the switches

Author

Deschamps, Eduardo ; Barbi, Ivo

Author_Institution

Dept. of Electr. Eng., Univ. of Blumenau, Brazil

Volume

15

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

855

Lastpage

860

Abstract

This paper introduces an isolated flying-capacitor DC-to-DC converter which features half of the input voltage across the switches, zero-voltage-switching, operation at constant frequency, regulation by pulse-width-modulation, and low RMS current stress upon power switches. The complete operating principle, theoretical analysis, relevant equations and design example are provided in this paper. The experimental results of a 1.5 kW converter with 60 V, 25 A output. 600 V input, operating at 50 kHz switching frequency are also presented and discussed in the paper. The proposed converter is an alternative to the full-bridge ZVS-PWM DC-to-DC converter in high-input voltage applications

Keywords

DC-DC power convertors; PWM power convertors; capacitors; switching circuits; 1.5 kW; 25 A; 50 kHz; 60 V; 600 V; constant frequency operation; flying-capacitor ZVS PWM DC-to-DC converter; high-input voltage applications; isolated flying-capacitor DC-to-DC converter; low RMS current stress; operating principle; power switches; switching frequency; theoretical analysis; zero-voltage-switching; DC-DC power converters; Equations; Frequency conversion; Pulse width modulation; Pulse width modulation converters; Stress; Switches; Switching converters; Switching frequency; Zero voltage switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.867674

Filename

867674