Title :
A class D audio power amplifier with high-efficiency and low-distortion
Author :
Hai, Chen ; Xiaobo, Wu
Author_Institution :
Inst. of VLSI Design, Zhejiang Univ., Hangzhou, China
Abstract :
Efficiency and fidelity is of key importance to audio power amplifiers. A new configuration of power amplifier was proposed to improve both of them. By combining a linear amplifier with a nonlinear one in parallel, it features high efficiency and low distortion. Simulation shows that at the output power of 8.5W its efficiency could be up to 83%, while its THD (total harmonic distortion) is as low as 0.14%.
Keywords :
audio-frequency amplifiers; harmonic distortion; power amplifiers; 0.14 percent; 8.5 W; 83 percent; class D audio power amplifier; linear amplifier; nonlinear amplifier; total harmonic distortion; Circuits; Frequency; High power amplifiers; Inductors; MOS devices; Power amplifiers; Power generation; Total harmonic distortion; Very large scale integration; Voltage;
Conference_Titel :
Design Automation Conference, 2005. Proceedings of the ASP-DAC 2005. Asia and South Pacific
Print_ISBN :
0-7803-8736-8
DOI :
10.1109/ASPDAC.2005.1466468
