A design of a 10-W single-chip class D audio amplifier with very high efficiency using CMOS technology

Author

Choi, Soo-chang ; Lee, Jun-woo ; Jin, Woo-kang ; So, Jae-hwan ; Kim, Suki

Author_Institution

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

Volume

45

Issue

3

fYear

1999

fDate

8/1/1999 12:00:00 AM

Firstpage

465

Lastpage

473

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. A mixture of a class D output stage and a bridge tied load (BTL) is the main topology of the proposed amplifier. The new 10-W IC audio power amplifier operates at 12 V with the efficiency of more than 90% and the total harmonic distortion (THD) of 0.1%. The amplifier is implemented in a 4-μm double-metal, single-poly CMOS technology that provides with relatively high voltage (12 V) MOSFETs

Keywords

CMOS integrated circuits; audio-frequency amplifiers; harmonic distortion; network topology; power amplifiers; 10 W; 12 V; 4 micron; 92 percent; IC audio power amplifier; MOSFET; THD; amplifier topology; bridge tied load; class D output stage; double-metal single-poly CMOS technology; high voltage; single-chip class D audio amplifier; total harmonic distortion; very high efficiency; Bridge circuits; CMOS integrated circuits; CMOS technology; Circuit topology; High power amplifiers; Integrated circuit technology; MOSFETs; Power amplifiers; Total harmonic distortion; Voltage;

fLanguage

English

Journal_Title

Consumer Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0098-3063

Type

jour

DOI

10.1109/30.793526

Filename

793526