Patent ID: 9735667
Date: 2017-08-15
CPC Classifications: H02M,Y02B,Y02P

Claim:
1. A management circuit for a power supply, the power supply comprising a power factor correction circuit and a power conversion circuit, an output of the power factor correction circuit being coupled to an input of the power conversion circuit, the management circuit comprising: a power factor correction controller, coupled to the power factor correction circuit, the power factor correction controller arranged for controlling a power factor correction operation of the power factor correction circuit; a pulse width modulation controller, coupled to the power conversion circuit, the pulse width modulation controller arranged for controlling a power conversion operation of the power conversion circuit; and a control circuit, coupled to the power factor correction controller and the pulse width modulation controller, the control circuit arranged for selectively activating the pulse width modulation controller according to a first activated signal generated by an input power of the power supply, wherein after the pulse width modulation controller is activated, the control circuit generates a second activated signal based on the first activated signal, and the control circuit activates the power factor conversion controller according to the second activated signal.