Patent ID: 8730688

Claim:
A flyback power converter with multiple outputs, comprising: a transformer, having a primary side winding, a first output winding and a second output winding; a first output circuit, having a first rectifying element and a first output capacitor for storing electric energy from the first output winding; a second output circuit, having a second rectifying switch and a second output capacitor for storing electric energy from the second output winding, and the second rectifying switch being connected between the first output capacitor and the second output capacitor; and a secondary side synchronous rectification controller, having a detection terminal coupled between the first output winding and the first rectifying element to receive a detecting signal indicative of a secondary-side conduction period, for synchronously controlling a conduction time of the first rectifying element and the second rectifying switch according to a detecting signal indicative of a secondary-side conduction period; wherein, electric energy is transferred between the first output capacitor and the second output capacitor through the second output winding and the second rectifying switch.