Patent ID: 9595879
Date: 2017-03-14
CPC Classifications: H02M

Claim:
1. A control device of a synchronous rectifier comprising: a controller formed at a secondary side of a power supply, the power supply provided with a primary side and the secondary side electrically insulated from each other, the controller configured to control a rectified switching operation based on a switching of the primary side according to a power transmitted to the secondary side, and the rectified switching operation is converted at a time earlier than a switching conversion time of the primary side by a predetermined time, wherein the controller of the synchronous rectifier comprises: a clock generation unit configured to generate a clock signal according to the switching conversion time of the primary side and the predetermined time; an off time determination unit configured to determine a switching off time of the rectified switching operation according to the clock signal from the clock generation unit; and a driver configured to output a driving signal to drive the rectified switching operation according to the switching off time of the off time determination unit.