Patent ID: 7800437

Claim:
A method for pre-compensation timing feedback in switching amplifiers using predictive feedback compensation, comprising: receiving a pulse width modulated (PWM) input signal having an input pulse width; predicting an output pulse amplitude error for the PWM input signal based on a prior PWM output signal; pre-compensating the input pulse width for the PWM input signal with a width adjustment to produce a pre-compensated PWM signal having a pre-compensated pulse width such that the predicted output pulse amplitude error weighted by a pulse width is forced by closed loop feedback to equal a timing difference between the pre-compensated pulse width and the input pulse width weighted by an output pulse amplitude, the width adjustment thereby being based upon a ratio of the predicted output pulse amplitude error to the output pulse amplitude weighted by the pulse width; and outputting a PWM output signal through a switching amplifier, the PWM output signal having a pulse width based upon the pre-compensated PWM signal.