Patent ID: 8575908

Claim:
A voltage regulation circuit having a first feedback loop with a loop gain, the voltage regulation circuit comprising: a power stage configured to generate a regulated output voltage responsive to an input voltage and at least one PWM signal; a voltage divider circuit connected to the output of the power stage and configured to generate a feedback voltage from the regulated output voltage; a second feedback loop including a filter connected to the regulated output voltage and configured to provide a filtered output voltage signal; first circuitry configured to generate the at least one PWM signal responsive to a voltage error signal, the filtered output voltage signal from the second feedback loop, and a ramp voltage signal, wherein the first circuitry is configured to use the filtered output voltage signal for substantially removing a loop-gain variation of the first feedback loop due to the voltage divider circuit; and a voltage compensation circuit configured to generate the voltage error signal responsive to the feedback voltage and a reference voltage.