NCP81145 Datasheet (ON Semiconductor) - VR12.5 Compatible Synchronous Buck MOSFET Driver

NCP81145, VR12.5 Compatible Synchronous Buck MOSFET Driver

Pin No.

Symbol Description 1 BST Floating bootstrap supply pin for high side gate driver.

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

2 PWM Control input.

The PWM signal has three distinctive states: Low = Low Side FET Enabled, Mid = Diode Emulation Enabled, High = High

NCP81145 VR12.5 Compatible Synchronous Buck MOSFET Driver The NCP81145 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 systems.

The UV

NCP81145 Features

* Faster Rise and Fall Times

* Adaptive Anti

* Cross

* Conduction Circuit

* Zero Cross Detection function

* Output Disable Control Turns Off Both MOSFETs

* Undervoltage Lockout

* Power Saving Operation Under Light Load Conditions