Switched Capacitor Compensation of Supply Distortion in Class-D Amplifiers

Electronics

Sasa Milic¹  Milan Ponjavic² 

[1] Electrical Institute Nikola Tesla, University of Belgrade, Koste Glavinica 8a, 11000 Belgrade, Serbia;School of Electrical Engineering, University of Belgrade, Kralja Aleksandra 73, 11120 Belgrade, Serbia;

关键词: class-D;    half-bridge;    bus-pumping;    switched-capacitor;   

DOI  :  10.3390/electronics9122197

来源: DOAJ

【 摘 要 】

This paper presents a switched capacitor technique for bus-pumping compensation in a half-bridge class-D amplifier. The proposed approach, in addition to the almost complete reduction of the bus-pumping effect, allows the half-bridge class-D amplifier to preserve maximum energy efficiency. The studied hardware implementation of the proposed technique demonstrates its advantages of high efficiency, simple circuit, and low cost. The principal design and operating principles are analyzed and described. The experimental static characteristics and time-domain waveforms for the proposed technique are shown to verify its feasibility.

【 授权许可】

Unknown