10-W single-chip class D power amplifier with very high efficiency for audio applications

Author

Soo-Chang Choi ; Jun-Woo Lee ; Woo-Kang Jin ; Suki Kim

Author_Institution

Dept. of Electron. Eng., Korea Univ., Seoul, South Korea

fYear

1999

fDate

22-24 June 1999

Firstpage

18

Lastpage

19

Abstract

A one-chip integrated circuit (IC) of a 10-W class D audio power amplifier with very high efficiency using CMOS technology is presented in this paper. A mixture of a class D output stage and a bridge tied load (BTL) is the main topology of the proposed amplifier. This realizes a new 10-W IC audio power amplifier with a 12 V power supply with an efficiency of more than 90% and total harmonic distortion (THD) of 0.1% without any heat sink, all in CMOS and packaged in a normal DIP. The amplifier is implemented in a 4-/spl mu/m double-metal single-poly CMOS technology that supports MOSFETs that can endure the relatively high voltage of 12 V.

Keywords

CMOS digital integrated circuits; audio-frequency amplifiers; harmonic distortion; integrated circuit design; power amplifiers; 10 W; 10-W single-chip class D power amplifier; 12 V; 90 percent; CMOS technology; MOSFET; audio applications; audio power amplifier; bridge tied load; class D output stage; double-metal single-poly CMOS technology; efficiency; one-chip integrated circuit; power supply; topology; total harmonic distortion; Bridge circuits; CMOS integrated circuits; CMOS technology; Circuit topology; Heat sinks; High power amplifiers; Integrated circuit technology; Power amplifiers; Power supplies; Total harmonic distortion;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, 1999. ICCE. International Conference on

Conference_Location

Los Angeles, CA, USA

Print_ISBN

0-7803-5123-1

Type

conf

DOI

10.1109/ICCE.1999.785149

Filename

785149