Patent ID: 9564814
Date: 2017-02-07
CPC Classifications: H02M

Claim:
1. A controller for adjusting an output voltage of a power converter, the controller comprising: a gate control signal generation circuit for generating a gate control signal to a power switch of a primary side of the power converter according to a reference voltage and a plurality of signals corresponding to the primary side and a second side of the power converter; a feedback signal detection module coupled to the primary side of the power converter for generating a logic signal according to a voltage corresponding to an auxiliary voltage generated by an auxiliary winding of the primary side of the power converter and a first reference voltage of a first reference voltage group, wherein the feedback signal detection module comprises: a reference voltage generation module coupled to the feedback signal detection module for generating the reference voltage to the gate control signal generation circuit according to the logic signal; wherein the power switch adjusts the output voltage of the second side of the power converter according to the gate control signal.