Patent ID: 7317302
Filing Date: 2008-01-08
Classification: G09G,H02M

Abstract:
1. A boost converter for providing an output voltage from an input voltage, comprising: a feedback circuit having at least a first input and a second input, wherein the feedback circuit is arranged to receive a reference signal at the first input; to receive, at the second input, a comparison signal that is based on a feedback voltage referenced to an output voltage rather than ground; and to provide a control signal that is based, in part, on the reference signal and the comparison signal, wherein the feedback circuit includes at least one of an error amplifier or a comparator; a driver circuit that is arranged to drive a switch circuit based, in part, on the control signal such that the output voltage is regulated based, in part, on the control signal; a reference circuit that is arranged to provide the reference signal such that the reference signal is referenced to ground; and a level-shift circuit that is arranged to provide the comparison signal from the feedback voltage such that the comparison signal is referenced to ground, wherein the level-shift circuit includes: