Patent ID: 8325497

Claim:
A power supply comprising: a pulse-width-modulation (PWM) controller; a synchronous rectifier having a forward metal oxide field effect transistor (MOSFET) and a catch MOSFET; a forward gate driver for driving a gate of the forward MOSFET; a catch gate driver for driving a gate of the catch MOSFET, wherein: a first enabled pin of the forward gate driver is configured as an active low input pin for receipt of a low operating output signal from the catch gate driver, a second enabled pin of the forward gate driver is configured as an active high input signal for receipt of a high operating output signal from the PWM controller, an enabled pin of the catch gate driver is configured as an output pin configured to drive the catch MOSFET in the presence of a low input signal from the PWM controller, and the active low input pin of the forward gate driver is connected to the output pin of the catch gate driver; and the PWM controller connected so that a low output of the PWM controller to the low signal input of the catch gate driver operates the catch MOSFET and precludes operation of the forward MOSFET.