Analysis and design of clamped-mode resonant converters with variable load

Author

González, Sergio A. ; Valla, María Inés ; Muravchik, Carlos H.

Author_Institution

Dept. de Electr. Eng., Univ. Nacional de La Plata, Argentina

Volume

48

Issue

4

fYear

2001

fDate

8/1/2001 12:00:00 AM

Firstpage

812

Lastpage

819

Abstract

In this paper, a design procedure for clamped-mode resonant converters working with variable load is proposed and analyzed. The operation of these converters with general parallel or series loads is reviewed first. The operation of the transistors as zero-voltage switches is identified and characterized as mode A. Mode A is preferred to simplify the implementation of the power switches and to increment the converter efficiency. As a case study, the design of an RF power amplifier is presented. The amplifier is connected to a variable load with reactive characteristics, through a low-pass filter of three elements. The validity of the proposed design approach is verified with an experimental setup

Keywords

DC-DC power convertors; power amplifiers; power semiconductor switches; power transistors; radiofrequency amplifiers; resonant power convertors; switching circuits; DC/DC power convertors; Mode A transistor operation; RF power amplifier; case study; clamped-mode resonant converter design procedure; low-pass filter; parallel loads; series loads; variable load operation; zero-voltage switches; Diodes; Frequency conversion; Industrial electronics; Instruments; Laboratories; Power amplifiers; Radiofrequency amplifiers; Resonance; Switches; Switching converters;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/41.937414

Filename

937414