Patent ID: 8421429
Filing Date: 2013-04-16
Classification: H02M

Abstract:
1. A control circuit for a power converter controlling an adaptive voltage position comprising: a first adder receiving an output voltage and a reference output voltage of said power converter and acquiring an output voltage difference between the output voltage and the reference output voltage; a digital compensator connecting with the first adder, and having a Z-domain transfer function to reference said output voltage difference to generate a pulse width control signal; and a pulse width modulation circuit connecting with the digital compensator, and being controlled by the pulse width control signal to generate a pulse width modulation signal to control ON/OFF of a power switch in the power converter; wherein the Z-domain transfer function comprises a denominator coefficient with least significant bits being regulated to achieve a load line function via control of the pulse width control signal for enhancing an efficiency of the power converter, wherein said Z-domain transfer function is expressed as: wherein Comp