NCP81146 Datasheet (ON Semiconductor) - VR12.5 Compatible Synchronous Buck MOSFET Driver

NCP81146, VR12.5 Compatible Synchronous Buck MOSFET Driver

Pin No.

Symbol 1 BST 2 PWM 3 EN 4 VCC 5 DRVL 6 GND 7 SW 8 DRVH 9 FLAG Description Floating bootstrap supply pin for high side gate driver.

Connect the bootstrap capacitor between this pin and the SW pin.

Control input.

The PWM signal has three distinctive states: Low = Low Side FET Enabled, M

NCP81146 VR12.5 Compatible Synchronous Buck MOSFET Drivers The NCP81146 is a high performance dual MOSFET gate driver optimized to drive the gates of both high side and low side power MOSFETs in a synchronous buck converter.

It can drive up to 3 nF load with a 25 ns propagation delay and 20 ns transition time.

Adaptive anti cross conduction and power saving operation circuit can provide a low switching loss and high efficiency solution for notebook and desktop sy

NCP81146 Features

* Faster Rise and Fall Times

* Adaptive Anti

* Cross

* Conduction Circuit

* Integrated Bootstrap Diode

* Pre OV function

* ZCD Detect

* Floating Top Driver Accommodates Boost Voltages of up to 35 V

* Output Disable Control Turns Off