NCP4318 Datasheet (ON Semiconductor) - Advanced Synchronous Rectifier Controller

NCP4318, Advanced Synchronous Rectifier Controller

Pin Number NCP4318A NCP4318B Name Description 1 1 GATE1 Gate drive output for SR MOSFET1 2 2 GND Ground 3 4 VS1 Synchronous rectifier source sense input for SR1 4 3 VD1 Synchronous rectifier drain sense input.

IOFFSET1 current source flows out of the VD1 pin such that an externa

Advanced Synchronous Rectifier Controller for LLC Resonant Converter NCP4318 NCP4318 is an advanced synchronous rectification (SR) controller for LLC resonant converter with minimum external components.

It has two gate drivers for driving the SR MOSFETs rectifying the outputs of the secondary transformer windings.

The two gate drivers have their own drain and source sensing pins and operate independently of each other.

The advanced adaptive dead time control compensates the voltage across parasi

NCP4318 Features

* Mixed Mode SR Turn

* off Control

* Anti Shoot

* through Control for Reliable SR Operation

* 200 V

* rated Drain Sensing and Dedicated Source Sensing Pins

* Advanced Adaptive Dead Time Control

* SR Current Inversion Detection

* Adaptive Minimum Turn