Pulse width modulation for class D audio power amplifier in CMOS 0.18um process with 90% of efficiency

Author

Messghati, Ziani ; Laghzizal, Yassir ; Qjidaa, Hassan

Author_Institution

Fac. of Sci. Dhar El Mahraz, Lab. d´´Electron. Signaux, Syst. et Inf. (LESSI), Univ. Sidi Mohamed Ben Abdellah, Fez, Morocco

fYear

2011

fDate

7-9 April 2011

Firstpage

1

Lastpage

4

Abstract

The design of a Pulse width modulation for class D audio power amplifier in CMOS 0.18 μm Process with high efficiency is presented. The efficiency, the power supply voltage range with 1.8-3.3 V, the PSRR, the THD and THD+N makes this design usable to various kinds of small and medium power audio amplification system such as DVD, LCD-TV, MP4 and wireless phones.

Keywords

CMOS integrated circuits; audio-frequency amplifiers; harmonic distortion; pulse width modulation; CMOS process; DVD; LCD-TV; MP4; THD; class D audio power amplifier; efficiency 90 percent; medium power audio amplification system; power supply voltage; pulse width modulation; size 0.18 mum; voltage 1.8 V to 3.3 V; CMOS integrated circuits; Gain; Operational amplifiers; Power amplifiers; Power supplies; Pulse width modulation; Resistance; Audio amplifier; CMOS; PWM; TSMC0.18um; constant-gm rail-to-rail comparator; high efficiency;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Computing and Systems (ICMCS), 2011 International Conference on

Conference_Location

Ouarzazate

ISSN

Pending

Print_ISBN

978-1-61284-730-6

Type

conf

DOI

10.1109/ICMCS.2011.5945677

Filename

5945677