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ADP3110

Dual Bootstrapped, 12 V MOSFET Driver with Output Disable

ON Semiconductor 

FEATURES

All-in-one synchronous buck driver

Bootstrapped high-side drive

One PWM signal generates both drives

Anticross-conduction protection circuitry

Output disable control turns off both MOSFETs to float

output per Intel® VRM 10 specification

APPLICATIONS

Multiphase desktop CPU supplies

Single-supply synchronous buck converters

Dual Bootstrapped, 12 V MOSFET

Driver with Output Disable

ADP3110

GENERAL DESCRIPTION

The ADP3110 is a dual, high voltage 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

25 ns propagation 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 ADP3110 includes overlapping drive protection to prevent

shoot-through current in the external MOSFETs.

The OD pin shuts off both the high-side and the low-side

MOSFETs to prevent rapid output capacitor discharge during

system shutdown.

The ADP3110 is specified over the commercial temperature

range of 0°C to 85°C and is available in an 8-lead SOIC_N

package.

SIMPLIFIED FUNCTIONAL BLOCK DIAGRAM

12V

ADP3110

IN 2

VCC

4

DELAY

OD 3

CMP

1V

DELAY

CMP

VCC

6

CONTROL

LOGIC

Figure 1.

D1

BST

1

CBST1

DRVH

8

CBST2

RG

Q1

SW

7

RBST

TO

INDUCTOR

DRVL

5

Q2

PGND

6

©2010 SCILLC. All rights reserved.

May 2010 – Rev. 2

Publication Order Number:

ADP3110/D

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