Datasheet Summary
.fairchildsemi.
AN-6206
Primary-Side Synchronous Rectifier (SR) Trigger Solution for Dual-Forward Converter
Introduction
In any switching converter, rectifier diodes are used to obtain DC output voltage. The conduction loss of diode rectifier contributes significantly to the overall power losses in a power supply; especially in low output voltage applications, such as personal puter (PC) power supplies. The conduction loss of a rectifier is proportional to the product of its forward-voltage drop and the forward conduction current. Using synchronous rectification (SR) where the rectifier diode is replaced by MOSFET with proper on resistance (RdsON), the forward-voltage drop of a...