NCP81085 Datasheet - ON Semiconductor

NCP81085 Dual MOSFET Gate Driver

Pin No. DFN9 Symbol 1 VDD 2 HB 3 HO 4 HS 5 NC 6 HI 7 LI 8 VSS 9 LO Description Positive Supply to the Lower Gate Driver High Side Bootstrap Supply High Side Output High *Side Source No Connect High *Side Input Low *Side Input Negative Supply Return Low Side .

Dual MOSFET Gate Driver, High Performance NCP81085 Introduction The NCP81085 is a high performance dual MOSFET gate driver optimized to drive the gates of both high and low side power MOSFETs in a synchronous buck converter. The NCP81085 uses an on chip bootstrap diode to eliminate the external discrete diode. A high floating top driver design can accommodate HB voltage as high as 180 V. The low side and high side are independently controlled and match to 4 ns between th.

NCP81085 Features

* Drives Two N-Channel MOSFETs in High-Side and Low-Side Configuration

* Floating Top Driver Accommodates Boost Voltage up to 180 V

* Switching Frequency up to 1 MHz

* 20 ns Propagation Delay Times

* 4 A Sink, 4 A Source Output Currents

* 8 ns Rise / 7

NCP81085-ONSemiconductor.pdf