Patent ID: 9071137
Filing Date: 2015-06-30
Classification: H02M,H05B

Abstract:
1. An error amplifier configured to charge a compensation capacitor with an error current, wherein the error amplifier comprises: an input stage configured to receive a reference voltage and a feedback voltage, and to provide a first differential output signal and a second differential output signal in response to a comparison between the reference voltage and the feedback voltage; a main output stage configured to receive the first differential output signal and the second differential output signal, and to charge the compensation capacitor; and an auxiliary output stage configured to receive the first differential output signal and the second differential output signal, and to be activated to charge the compensation capacitor; wherein in a first operation, both the main output stage and the auxiliary output stage charge the compensation capacitor; and in a second operation, the main output stage charges the compensation capacitor, and the auxiliary output stage is deactivated and does not charge the compensation capacitor.