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This project aims at designing and implementing an integrated control system for an audio power amplifier system for portable devices, having good efficiency and sound quality. The proposed design controls a DC-DC converter to produce a varying power supply to a class AB output stage. The varying power supply tracks the input audio signal and therefore significantly improves the efficiency. The system includes the DC-DC converter, the digital regulator, and the class AB output stage. The simulation of the designs will be done in both Matlab and Cadence. The final control system will be prototyped on a FPGA for characterization along with the DC-DC converter on a test board.
Dr. Stefano Gregori
Jingqi Liu
Kapik Integration
Engineering
Information and communications technologies
University of Guelph
Accelerate
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