NCP81145 Datasheet - ON Semiconductor

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

NCP81145-ONSemiconductor.pdf