Patent ID: 8232782

Claim:
A variable phase voltage regulator comprising: a plurality of phases, wherein individuals phases of the plurality of phases are operable to be selectively switched between an active state and a non-active state; and a control circuit comprising: an error amplifier to generate a difference signal based on a difference between a reference voltage and a signal representative of a regulated voltage at an output node of the variable phase voltage regulator; and a variable phase compensator to amplify the difference signal to produce a modified difference signal, wherein the amplification is proportional to a ratio of total number of phases in the plurality of phases to number of phases in the active state; wherein the control circuit generates a respective control signal based on the modified difference signal for each of the plurality of phases; and wherein each phase in the active state regulates an input voltage based on the respective control signal and provides the regulated voltage at the output node of the variable phase voltage regulator.