Patent ID: 9236803
Filing Date: 2016-01-12
CPC Classification: H02M

Claim Text:
1. An AC-DC flyback converter comprising: an isolating transformer including a primary winding configured for receiving an input voltage, a secondary winding configured for outputting a direct voltage, and an auxiliary winding configured for outputting a feedback signal; a power switch coupled between a ground and the primary winding of the isolating transformer and configured to switch on or off the primary winding of the isolating transformer according to the feedback signal from the auxiliary winding; and a feedback control module coupled between the power switch and the auxiliary winding of the isolating transformer, configured to send the feedback signal to the power switch, wherein the feedback control module comprises: an error amplifier having an inverse input, a non-inverse input coupled to a reference and an output terminal coupled to the inverse input thereof via a second resistor wherein frequency ω