Switching Power Converters and Controllers Having Auxiliary Power Circuits

Abstract

Switching device controllers, drive circuits, power converters and related methods are disclosed. One example controller for a switching device includes a drive circuit for controlling the switching device and an auxiliary circuit coupled to the drive circuit. The auxiliary circuit includes an input for receiving a waveform having alternating first and second intervals. The auxiliary circuit is configured to energize the drive circuit during the first intervals and de-energize the drive circuit during the second intervals. One example method of energizing and de-energizing a drive circuit for a switching device includes receiving a waveform having alternating first and second intervals, energizing the drive circuit during the first intervals, and de-energizing the drive circuit during the second intervals.

Dependencies are inferred from the claim text.