NCP4302 Datasheet - ON Semiconductor

NCP4302 - Synchronous Rectification Controller

Pin Number Symbol 1 SYNC/CS 2 TRIG 3 CATH 4 VREF 5 DLYADJ 6 GND 7 DRV 8 VCC Description Connected to the flyback winding. The current on this pin is sensed and used to turn on the Synchronous Rectification MOSFET (SRFET). This pin is also used to sense the zero crossing of the MOSFET current ei.

NCP4302 Features

* Self

* contained Control of Synchronous Rectifier in CCM, DCM, and QR Flyback Applications

* Interface to External Signal for CCM Mode

* True Secondary Zero Current Detection

* High Gate Drive Currents (2.5 A Source/Sink)

* High Voltage Operation

NCP4302_ONSemiconductor.pdf