Patent ID: 8395368

Claim:
An adaptive voltage position DC-DC regulator, comprising: a main circuit having an output inductor and an output capacitor coupled in series, the output capacitor being coupled in parallel to a load; and a control circuit, wherein the control circuit comprises: a sensing unit having a sensing resistor and a sensing capacitor coupled in series, electrically coupled to the output inductor of the main circuit, operable to provide a sensing signal corresponding to a voltage across the output inductor; a resistor coupled between the output inductor and the output capacitor, the sensing resistor and the sensing capacitor being in parallel to both the output inductor and the resistor; a feedback unit, electrically coupled to the sensing unit, operable to receive the sensing signal and to provide a feedback signal based on the voltage across the output inductor; a comparing unit, electrically coupled to the feedback unit, operable to compare the feedback signal to a reference signal and to provide a comparison signal corresponding to a difference between the feedback signal and the reference signal; a PWM generator, electrically coupled to the comparing unit, operable to receive the comparison signal and to provide a PWM signal based on the comparison signal; and a driver, electrically coupled to the PWM generator, operable to provide a driving signal to the main circuit based on the PWM signal.