Patent ID: 7671574

Claim:
A circuit for regulating an output voltage, comprising: a first component arranged for high side conversion of an input voltage into the output voltage; a second component arranged for low side conversion of the input voltage into the output voltage; a control circuit for regulating the output voltage, wherein the control circuit controls a duty cycle for the high side conversion of the input voltage into the output voltage and the low side conversion of the input voltage into the output voltage, and wherein the duty cycle is based at least in part on an error signal; and a sample and hold circuit for providing a sampled version of the output voltage to an error amplifier during low side conversion of the input voltage, wherein the error amplifier provides the error signal to the control circuit based on a comparison to a reference voltage and at least one of the output voltage or the sampled version of the output voltage, and wherein while the first component is off, the sample and hold circuit provides the sampled version of the output voltage for comparison to the reference voltage.