Class-D amplifier for automotive and public audition applications

Author

Vincenzi, F.R.S. ; da Silva, L.R. ; Gomes de Freitas, Luiz Carlos ; Freitas, M.A.A. ; Fernandes, E.R. ; Vieira, J.B., Jr. ; de Freitas, L.C.

Author_Institution

Jatai Autom. Lab., Fed. Center of Technol. Educ. of Goias, Jatai, Brazil

fYear

2007

fDate

2-5 Sept. 2007

Firstpage

1

Lastpage

11

Abstract

This paper proposal presents a new high power Class-D audio amplifier for woofer applications. A regulated DC voltage supply is not needed as well as a low pass output filter overcoming the disadvantages of ordinary audio amplifiers structures. A 1 kW laboratory prototype was implemented and it was found that a 94% efficiency and 1% of THD could be achieved. A detailed design guide line, principle of operation analysis, control strategy, is also included in this paper proposal.

Keywords

audio-frequency amplifiers; harmonic distortion; automotive audition; class-D audio amplifier; low pass output filter; power 1 kW; public audition; regulated DC voltage supply; total harmonic distortion; Automotive engineering; High power amplifiers; Low pass filters; Power amplifiers; Power generation; Power supplies; Proposals; Pulse amplifiers; Pulse width modulation; Voltage; Audio Amplifiers; Class-D Amplifiers;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications, 2007 European Conference on

Conference_Location

Aalborg

Print_ISBN

978-92-75815-10-8

Electronic_ISBN

978-92-75815-10-8

Type

conf

DOI

10.1109/EPE.2007.4417505

Filename

4417505