Title :
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
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;
Conference_Titel :
Consumer Electronics, 1999. ICCE. International Conference on
Conference_Location :
Los Angeles, CA, USA
Print_ISBN :
0-7803-5123-1
DOI :
10.1109/ICCE.1999.785149
