Patent ID: 8879283
Filing Date: 2014-11-04
Classification: H02H,H02M

Abstract:
1. A system for protecting a power converter, the system comprising: a first comparator configured to receive a first threshold signal and a first signal and to generate a first comparison signal, the first signal being associated with an input current for a power converter; a second comparator configured to receive a second threshold signal and the first signal and to generate a second comparison signal, the second threshold signal being different from the first threshold signal in magnitude; a detection and delay component configured to receive at least the second comparison signal, detect, with or without a predetermined delay of time, the second comparison signal only if one or more predetermined conditions are satisfied, process information associated with the detected second comparison signal, and generate a first detection signal based on at least information associated with the corresponding detected second comparison signal before the predetermined delay of time; a switch signal generator coupled to at least the detection and delay component and configured to generate a switch signal for controlling a switch for adjusting the input current for the power converter based on at least information associated with the first comparison signal and the first detection signal; wherein: wherein the detection and delay component includes a deglitch component and a latch component, the latch component being coupled, directly or indirectly, to the deglitch component; wherein: