Patent ID: 9641083
Date: 2017-05-02
CPC Classifications: H02M,Y02B

Claim:
1. A control device of a power converter, wherein the power converter comprises a switch unit, wherein the control device comprises: a first control unit, which is coupled to the power converter to detect an output voltage of the power converter and is configured to generate a first control signal based on the output voltage; a variable resistor unit, which is connected to an output terminal of the first control unit and is configured to generate a resistance value based on the first control signal; and a second control unit, which is connected to the variable resistor unit and is configured to output a second control signal to the switch unit in order to control operations of the switch unit, wherein the power converter further comprises a transformer, a first terminal of the variable resistor unit is connected to a primary winding of the transformer, and a second terminal of the variable resistor unit is connected to a first ground terminal.