Use of depletion mode MOSFET devices in synchronous rectification

This paper examines the properties of a new power MOSFET operating as a depletion-mode device and used as a synchronous rectifier in a low-voltage, current-mode-control PWM switching regulator. The performance of this device is compared to both a Schottky diode and an enhancement-mode power MOSFET. A comparison of the efficiencies obtained for the three cases is presented.