Design of Power Supply for Intelligent Power Amplifier Based on DSP

Abstract:

This paper designs a new type of the control system of switching power supply for audio power amplifier, which is used in DSP-controlled power amplifier. The basic frame and the software and hardware design of the system are described. The system uses TMS320F2812 as the main controller, to reduce the hardware circuit structures, and realize the audio power amplifier digital control. The experimental results show that the design has good regulator function, which not only satisfies certain control accuracy, but also meets the real-time requirements, and has great future in high audio power amplifier.

• Periodical: Advanced Materials Research (Volumes 816-817)
• Pages: 420-423
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.816-817.420
• Online since: September 2013
• Authors: Guo Hong Li, Guan Da Wang
• Keywords: Audio Power Amplifier, Digital Signal Processor (DSP), Phase Shift Full-Bridge, Switch Power Supply

References

[1] Hu Honglin, Li Chunhua, Shao Bo. Phase-shifted full-bridge zero-voltage soft switching circuit of PWM [J]. Power Electronics, 2009 (1): 11-12.

[2] Zhang Zhansong, Cai Xuansan. Switching power supply theory and design [M]. Beijing: Electronic Industry Press, (2004).

[3] Wang Yan, Xu Junfeng, Xu Jianping. Switching Power Supply Control Methods [J]. Railway Locomotive, 2006 (1): 6-10.

[4] Wan Shanming. TMS320F281x DSP theory and application [M]. Beijing: Beijing University of Aeronautics and Astronautics Press, (2007).

[5] Tao Yonghua, Yin Yixin, Ge Lusheng. New PID control and its application [M]. Beijing: Mechanical Industry Press, (1998).