There is disclosed a controller configured to control a synchronous rectification MOSFET having a drain, a source and a gate; the controller comprising a regulator configured to regulate a voltage between the drain and the source to a first regulation voltage, and a gate charger operable during a turn-on phase of the synchronous rectification MOSFET operation and configured to regulate a voltage between the drain and the source to a second regulation voltage having a larger absolute value than the absolute value of the first regulation voltage, wherein the gate charger is further configured to, when in operation, disable the regulator. Also disclosed is a switched mode power converter comprising such a synchronous rectification MOSFET, and a method for controlling such a synchronous rectification MOSFET.