Synchronous rectification switching regulator, control circuit for synchronous rectification switching regulator, and operation control method for synchronous rectification switching regulator

摘要

A switching regulator includes a first switching element for charging an inductor, a switching circuit for discharging the inductor, a controller circuit for generating a first control signal for controlling the level of an output voltage of the switching regulator, and a reverse current suppressing circuit for controlling the on-resistance of the switching circuit based on whether a reverse current is detected in the switching regulator. A circuit and method for controlling the switching regulator are also disclosed.