Title :
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
fDate :
8/1/1999 12:00:00 AM
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;
Journal_Title :
Consumer Electronics, IEEE Transactions on
