An integrated class D audio amplifier based on sliding mode control

Author

Pillonnet, Gael ; Cellier, Remy ; Abouchi, Nacer ; Chiollaz, Monique

Author_Institution

Adv. Audio Res. Lab., CPE Lyon/INL, Grenoble

fYear

2008

fDate

2-4 June 2008

Firstpage

117

Lastpage

120

Abstract

Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial circuit. Experimental IC results, using commercial 0.13 mum CMOS technology, verified the theoretical results: the efficiency is above 90%, THD is lower than 0.01% and PSRR is superior to 70 dB.

Keywords

CMOS integrated circuits; audio-frequency amplifiers; harmonic distortion; network topology; variable structure systems; CMOS technology; THD; amplifier topology; embedded audio application; industrial circuit; integrated class D audio amplifier; sliding mode control; CMOS integrated circuits; CMOS technology; Feedback; Frequency; Power amplifiers; Power generation; Pulse amplifiers; Pulse width modulation; Sliding mode control; Space vector pulse width modulation; Sliding mode control; Switching audio amplifier; feedback; linearity;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuit Design and Technology and Tutorial, 2008. ICICDT 2008. IEEE International Conference on

Conference_Location

Austin, TX

Print_ISBN

978-1-4244-1810-7

Electronic_ISBN

978-1-4244-1811-4

Type

conf

DOI

10.1109/ICICDT.2008.4567259

Filename

4567259