Patent ID: 8912770
Filing Date: 2014-12-16
Classification: H02M,H05B,Y02B,Y10S

Abstract:
1. A power conversion circuit comprising: a power converter comprising a power input coupled to a power source, an output coupled to a load, and a control input, wherein the power converter is configured to convert an input voltage on the power input to an output voltage on the output based on the control input; a first feedback circuit coupled between the output of the power converter and the control input of the power converter, wherein the first feedback circuit is configured to operate at a first bandwidth; a second feedback circuit coupled between the load and the first feedback circuit, wherein the second feedback circuit is configured to operate at a second bandwidth slower than the first bandwidth, and wherein the second feedback circuit is configured to change a commanded voltage to the first feedback circuit at a fixed ramp rate until a detected voltage at the load crosses a goal voltage and overshoots the commanded voltage, and after the detected voltage crosses the goal voltage and overshoots the commanded voltage, decrease or increase the commanded voltage by an overshoot compensation amount to cause the detected voltage to reach the goal voltage at a rate different than the fixed ramp rate.