Patent ID: 7852156
Filing Date: 2010-12-14
Classification: H03F

Abstract:
1. A Class-D power amplifier having a distortion-suppressing function, wherein the Class-D power amplifier has a positive output end (Out) and a negative output end (Outb) for driving a loudspeaker, the Class-D power amplifier comprising: a gain control unit coupled with an audio signal; at least one PWM unit coupled with the gain control unit so as to receive an amplified audio signal output by the gain control unit and generate a PWM signal; at least one FET drive unit coupled with the PWM unit; at least one output stage FET unit coupled with the at least one FET drive unit, wherein the at least one FET drive unit receives the PWM signal output by the at least one PWM unit and turns on or off the at least one output stage FET unit according to the PWM signal, thereby driving the loudspeaker; and a level control unit comprising: