Real time correction of a digital pwm amplifier

摘要: Distortion and noise in high power digital PWM amplifiers is reduced by measuring the difference between desired output signal actual on a pulse basis. This analog error converted into with an to converter (ADC). The then used correct feedback of delta sigma modulator real time. Preferably, more than one moment corrected via feedback. predictable circuitry which known priori also correcting A specialized ADC allows loop delay be low, without compromising accuracy.