Constant frequency ZVS converter with integrated magnetics

Author

Bassett, J.A.

Author_Institution

Comput. Products-Power Conversion, Fremont, CA, USA

fYear

1992

fDate

23-27 Feb 1992

Firstpage

709

Lastpage

716

Abstract

The author introduces a high-frequency DC-DC converter which provides zero-voltage-switching (ZVS) and allows control of the output by pulse width modulation (PWM) at constant frequency. The topology is very tolerant to leakage inductance in the isolating transformer, and it is possible to combine the transformer and filter choke into a single integrated magnetic assembly yielding several additional benefits. The converter has been operated with ZVS to reduce losses at the switching transition, and this has allowed high-frequency operation even with high frequency and high input voltage. A control scheme has been defined whereby constant frequency operation and PWM produce a linear control to output transfer function with minimal interaction of load

Keywords

magnetic circuits; power convertors; pulse width modulation; constant frequency; filter choke; high-frequency DC-DC converter; integrated magnetics; isolating transformer; leakage inductance; linear control; minimal load interaction; output transfer function; pulse width modulation; topology; zero-voltage-switching; DC-DC power converters; Filters; Frequency conversion; Inductance; Magnetic separation; Pulse transformers; Pulse width modulation; Pulse width modulation converters; Topology; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1992. APEC '92. Conference Proceedings 1992., Seventh Annual

Conference_Location

Boston, MA

Print_ISBN

0-7803-0485-3

Type

conf

DOI

10.1109/APEC.1992.228343

Filename

228343