Zero-voltage switching in a constant frequency digitally controller resonant DC-DC power converter

Author

Hayes, J.G. ; Mohan, N. ; Henze, C.P.

Author_Institution

Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN, USA

fYear

1988

fDate

1-5 Feb 1988

Firstpage

360

Lastpage

367

Abstract

A series-resonant DC-DC converter operating at a constant frequency above its resonant frequency is analyzed and experimentally tested. Using a state-plane analysis, the range of load for a given set of circuit parameters over which zero-voltage zero-current turn-on and zero-voltage turn-off (using lossless capacitive snubbers) are calculated and verified on a test circuit. A digital controller, designed previously for a quantized duty-ratio control in PWM DC-DC converters and now available in a gate array, is used to implement the constant-frequency control of the output voltage

Keywords

digital control; frequency control; power convertors; pulse width modulation; switching; PWM; constant-frequency control; digital controller; digitally controller resonant DC-DC power converter; gate array; lossless capacitive snubbers; quantized duty-ratio control; state-plane analysis; zero-voltage switching; Circuit testing; DC-DC power converters; Digital control; Frequency conversion; Pulse width modulation; Pulse width modulation converters; Resonant frequency; Snubbers; Voltage control; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1988. APEC '88. Conference Proceedings 1988., Third Annual IEEE

Conference_Location

New Orleans, LA

Type

conf

DOI

10.1109/APEC.1988.10584

Filename

10584