Patent ID: 7782036

Claim:
A circuit for regulating power, comprising: a regulator controller that is arranged to provide a switch control signal, wherein the regulator controller includes: a comparison circuit that is arranged to provide a comparison signal that is based, at least in part, on a comparison of a reference signal to a feedback signal; a one-shot circuit that is arranged to receive the comparison signal and to provide a one-shot signal, and is arranged such that if the comparison signal is asserted, the one-shot signal is asserted for a configured duration and is de-asserted at the end of the configured duration, wherein the switch control signal is based, at least in part, on the one-shot signal; and a pulse duration controller that is arranged to adjust the configured duration based, at least in part, on a frequency sense signal, wherein the frequency sense signal is based, at least in part, on a frequency associated with the switch control signal, wherein the pulse duration controller includes: a timer circuit that is arranged to provide a time signal that is proportional to the frequency associated with the switch control signal; an error amplifier that is arranged to provide an error signal that is based, at least in part, on a difference between the time signal and a reference frequency signal; and a duration adjustor that is arranged to provide a first signal to the one-shot circuit such that the first signal is based, at least in part, on summing the error signal with a previous value of the first signal.