APR34xx Synchronous Rectification Switchers Diodes Inc. APR34xx are secondary side Combo ICs. They combine an N-Channel MOSFET and a driver circuit designed for synchronous rectification (SR) in DCM operation. They also integrate output voltage detect function for primary side control systems. The N-Channel MOSFET has been optimized for low gate charge, low RDS(ON), fast switching speed and body diode reverse recovery performance. Learn More