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A class D audio power amplifier with high-efficiency and low-distortion

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2 Author(s)
Chen Hai ; Inst. of VLSI Design, Zhejiang Univ., Hangzhou, China ; Wu Xiaobo

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%.

Published in:

Design Automation Conference, 2005. Proceedings of the ASP-DAC 2005. Asia and South Pacific  (Volume:2 )

Date of Conference:

18-21 Jan. 2005