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

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5 Author(s)
Soo-Chang Choi ; Dept. of Electron. Eng., Korea Univ., Seoul, South Korea ; Jun-Woo Lee ; Woo-Kang Jin ; Jae-Hwan So
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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

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Consumer Electronics, IEEE Transactions on  (Volume:45 ,  Issue: 3 )