Title :
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
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;
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
DOI :
10.1109/APEC.1997.575737
