A series resonant converter with constant on-time control for capacitor charging applications

Author

Lippincott, A. ; Nelms, R. ; Garbi, M. ; Strickland, E.

Author_Institution

Dept. of Electr. Eng., Auburn Univ., AL, USA

fYear

1990

Firstpage

147

Lastpage

154

Abstract

A capacitor charging power supply (CCPS) has been assembled. A full-bridge series resonant topology using MOSFETs as switching elements makes up the bulk of the high-power section of the CCPS. A high-voltage transformer couples the output stage to the resonant inverter, and the secondary current of this transformer is rectified to provide the charging current. The CCPS uses constant on-time control with zero current switching. The control scheme is implemented with Unitrode´s UC3860 resonant mode power supply controller. The control circuitry also protects the CCPS against both overvoltage and overcurrent conditions. The CCPS has been tested in the laboratory, where it successfully charged capacitors ranging from 90 nF to 1 mu F to 2000 V.<>

Keywords

capacitors; invertors; power convertors; power supplies to apparatus; 2000 V; 90 nF to 1 muF; CCPS; HV transformer; MOSFETs; Unitrode UC 3860; capacitor charging power supply; constant on-time control; full-bridge series resonant topology; resonant inverter; zero current switching; Assembly; Coupling circuits; MOSFETs; Power capacitors; Power supplies; Protection; Resonance; Resonant inverters; Topology; Zero current switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1990. APEC '90, Conference Proceedings 1990., Fifth Annual

Conference_Location

Los Angeles, CA, USA

Type

conf

DOI

10.1109/APEC.1990.66406

Filename

66406