MP18021

100V High Frequency

Half-Bridge Gate Driver

MP18021 Rev. 1.0

www.MonolithicPower.com

1

8/8/2012

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP18021 is a high frequency, 100V half

bridge N-channel power MOSFET driver. Its low

side and high side driver channels are

independently controlled and matched with less

than 5ns in time delay. Under voltage lock-out on

both high side and low side supplies force their

outputs low in case of insufficient supply. The

integrated bootstrap diode reduces external

component count.

FEATURES

 Drives N-channel MOSFET half bridge

 On-chip bootstrap diode

 Typical 16ns propagation delay time

 Less than 5ns gate drive matching

 Drive 1nF load with 12ns/9ns rise/fall times

with 12V VDD

 TTL compatible input

 Less than 150A quiescent current

 UVLO for both high side and low side

 In SOIC8 EPAD Package

APPLICATIONS

 Telecom half bridge power supplies

 Avionics DC-DC converters

 Two-switch forward converters

 Active clamp forward converters

“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

MP18021

PWM

CONTROLLER

INH

VSS

INL

DRVL

SW

DRVH

VDD

BST

+12V

48V

DRIVE

LO

DRIVE

HI

ISOLATION

AND

FEEDBACK

SECONDARY

SIDE

CIRCUIT