Soft switching power amplifiers for audio applications

Author

Oliveira, R.C. ; Coelho, Ernane A A ; Viera, J.B. ; Freitas, Luiz C. ; Farias, Valdeir J.

Author_Institution

Dept. de Engenharia Eletrica, Univ. Federal de Uberlandia, Brazil

Volume

2

fYear

1997

fDate

23-27 Feb 1997

Firstpage

799

Abstract

This work presents a soft switching power amplifier, for audio applications, which uses PWM techniques. The principles of power switching amplifiers are described. The design procedure, simulation and experimental results for soft commutation are presented. The final goal of this study is to obtain a laboratory prototype of a switching power amplifier with soft commutation, which presents high efficiency and high audio fidelity

Keywords

PWM power convertors; audio-frequency amplifiers; commutation; field effect transistor switches; power MOSFET; power amplifiers; power field effect transistors; power semiconductor switches; switching circuits; PWM techniques; audio applications; audio power amplifiers; design procedure; experiments; power MOSFET switches; simulation; soft commutation; soft switching; MOSFETs; Power amplifiers; Power supplies; Pulse amplifiers; Pulse width modulation; Pulsed power supplies; Radiofrequency amplifiers; Space vector pulse width modulation; Switches; Switching frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1997. APEC '97 Conference Proceedings 1997., Twelfth Annual

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-3704-2

Type

conf

DOI

10.1109/APEC.1997.575737

Filename

575737