ADP3110AJCPZ-RL 查看數據表（PDF） - Analog Devices

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ADP3110AJCPZ-RL

Dual Bootstrapped, 12 V MOSFET Driver with Output Disable

Analog Devices 

FEATURES

All-in-one synchronous buck driver

Bootstrapped high-side drive

One PWM signal generates both drives

Anticross conduction protection circuitry

OD for disabling the driver outputs

Meets CPU VR requirement when used with

Analog Devices Flex-Mode™1 controller

APPLICATIONS

Multiphase desktop CPU supplies

Single-supply synchronous buck converters

Dual Bootstrapped, 12 V MOSFET

Driver with Output Disable

ADP3110A

GENERAL DESCRIPTION

The ADP3110A is a dual, high voltage MOSFET driver

optimized for driving two N-channel MOSFETs, the two

switches in a nonisolated synchronous buck power converter.

Each driver 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 ADP3110A 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 ADP3110A is specified over the commercial temperature

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

8-lead LFCSP_VD package.

1 Flex-Mode™ is protected by U.S. Patent 6683441; other patents pending.

FUNCTIONAL BLOCK DIAGRAM

12V

ADP3110A

IN 2

VCC

4

DELAY

LATCH

R1

R2 Q

S

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

Rev. 0

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

www.analog.com

Fax: 781.461.3113

©2006 Analog Devices, Inc. All rights reserved.

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