Patent ID: 6842068

Claim:
A power management method comprising: receiving an input signal at an input of an error amplifier wherein the input signal has an input phase and is representative of an output voltage of a power management unit; generating a first signal by amplifying a signal representative of the input signal through a first signal path of the error amplifier wherein the first signal is representative of the input signal and has a first phase relative to the input phase and wherein the signal that is representative of the input signal has a signal phase that is different from the input phase; generating in parallel with the first signal a feed-forward signal that is representative of the input signal including buffering the food-forward signal from the signal representative of the input signal wherein the feed-forward signal has a second phase relative to the input phase; using the first signal and the feed-forward signal to form a compensated signal that has a third phase relative to the input phase; and using the compensated signal to drive an output device of the power management unit.