a

ADP3414

Dual Bootstrapped

MOSFET Driver

FUNCTIONAL BLOCK DIAGRAM

IN

VCC

OVERLAP

PROTECTION

CIRCUIT

BST

DRVH

SW

DRVL

PGND

ADP3414

FEATURES

All-In-One Synchronous Buck Driver

Bootstrapped High Side Drive

One PWM Signal Generates Both Drives

Anticross-Conduction Protection Circuitry

Pulse-by-Pulse Disable Control

APPLICATIONS

Mobile Computing CPU Core Power Converters

Multiphase Desktop CPU Supplies

Single-Supply Synchronous Buck Converters

Standard-to-Synchronous Converter Adaptations

GENERAL DESCRIPTION

The ADP3414 is a dual MOSFET driver optimized for driving

two N-channel MOSFETs which are the two switches in a

nonisolated synchronous buck power converter. Each of the

drivers is capable of driving a 3000 pF load with a 20 ns propa-

gation delay and a 30 ns transition time. One of the drivers can

be bootstrapped and is designed to handle the high voltage

slew rate associated with “floating” high side gate drivers.

The ADP3414 includes overlapping drive protection (ODP)

to prevent shoot-through current in the external MOSFETs.

The ADP3414 is specified over the commercial temperature

range of 0°C to 70°C and is available in an 8-lead SOIC package.

IN

VCC

ADP3414

BST

DRVH

SW

DRVL

PGND

DELAY

1V

+1V

12V

C

BST

7V

Q1

Q2

D1

Figure 1. General Application Circuit

©2010 SCILLC. All rights reserved.

Publication Order Number:

May 2010 - Rev. 3

ADP3414/D