Patent ID: 7545134

Claim:
A power supply controller comprising: a reference generator operably coupled to form a reference signal and configured to selectively form a value of the reference signal; an error amplifier operably coupled to receive the reference signal and to receive a feedback signal that is representative of an output voltage of a power supply control system, and to responsively form an error signal; a feed-forward circuit configured to form a feed-forward signal that is representative of a change in the value of the reference signal wherein a value of the feed-forward signal changes for a first time interval responsively to a change in the value of the reference signal wherein the feed-forward circuit includes an RC network coupled to receive the reference signal and form the feed-forward signal responsively to a change in the value of the reference signal; a first circuit configured to combine the feed-forward signal and the error signal to form a compensated signal; and a PWM channel configured to form a PWM drive signal, the PWM channel coupled to use the compensated signal to form a duty cycle of the PWM drive signal.