Patent ID: 9531278
Filing Date: 2016-12-27
CPC Classification: H02M,H05B,Y02B

Claim Text:
1. A system controller for regulating an output current of a power conversion system, the system controller comprising: a driving component configured to output a drive signal to a switch in order to affect a primary current flowing through a primary winding of the power conversion system, the drive signal being associated with at least a switching period, the switching period including an on-time period and an off-time period, the off-time period including a demagnetization period; a demagnetization detector configured to receive a feedback signal associated with an output voltage of the power conversion system and generate a detection signal based on at least information associated with the feedback signal, the detection signal indicating the demagnetization period, the switch being closed during the on-time period, the switch being open during the demagnetization period, the detection signal being different from the drive signal; a current-regulation component configured to: a signal processing component configured to receive the current-regulation signal and output a processed signal to the driving component in order to generate the drive signal.