Switching circuit, synchronous rectification control circuit and control method thereof
A synchronous rectification control circuit for controlling a switching circuit comprising a synchronous rectifier switch, can include: a drive circuit configured to generate a drive signal to control switching states of the synchronous rectifier switch; and a voltage regulation circuit configured to control the drive circuit to adjust an amplitude of the drive signal to decrease to a preset threshold in an adjustment state when a drain-source voltage of the synchronous rectifier switch is greater than an adjustment threshold before the synchronous rectifier switch is turned off, where a time that the voltage regulation circuit is in the adjustment state is an adjustment time.
Silergy Semiconductor Technology (Hangzhou) LTD
H Y H
H02M Y02B H02M
inventional additional inventional
Qiao Xinlei
Zhang Li