Constant-frequency parallel-resonant converter

Author

Chin, Yuan ; Lee, Fred C Y

Author_Institution

Digital Equipment Corp., Maynard, MA, USA

Volume

25

Issue

1

fYear

1989

Firstpage

133

Lastpage

142

Abstract

A steady-state analysis of the constant-frequency parallel-resonant converter operating in the clamped mode is performed for the continuous-conduction mode of operation. Unified closed-form expressions are derived for circuit characteristics such as the resonant-capacitor voltage, the resonant-inductor current, control-to-output characteristics, boundary conditions for natural and forced communication, and the theoretical limits for clamped-mode operation. These characteristics are experimentally verified and simulated using the computer program IG-SPICE. Considerations for practical design based on hardware operating at 300 kHz with a 300 V input and a 5 V and 300 W output are discussed. The following advantages associated with the power converter are noted: ease of designing magnetic filter elements because of the constant-frequency operation; lower switching losses; lower conduction losses; and smaller size and weight due to the higher frequency operation.<>

Keywords

circuit analysis computing; power convertors; 300 V; 300 W; 300 kHz; 5 V; IG-SPICE; circuit characteristics; clamped-mode operation; communication; constant-frequency parallel-resonant converter; magnetic filter; power converters; software packages; switching losses; Boundary conditions; Closed-form solution; Communication system control; Computational modeling; Force control; Performance analysis; RLC circuits; Resonance; Steady-state; Voltage control;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.18883

Filename

18883