ADP3110 MOSFET Driver Datasheet

ADP3110 Datasheet, PDF, Equivalent


Part Number

ADP3110

Description

12V MOSFET Driver

Manufacture

ON Semiconductor

Total Page 11 Pages
Datasheet
Download ADP3110 Datasheet


ADP3110
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
PGND
6
Q2
©2010 SCILLC. All rights reserved.
May 2010 – Rev. 2
Publication Order Number:
ADP3110/D

ADP3110
ADP3110
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 4
ESD Caution.................................................................................. 4
Pin Configuration and Function Descriptions............................. 5
Timing Characteristics..................................................................... 6
Theory of Operation ........................................................................ 7
Low-Side Driver............................................................................ 7
High-Side Driver .......................................................................... 7
Overlap Protection Circuit...........................................................7
Application Information...................................................................8
Supply Capacitor Selection ..........................................................8
Bootstrap Circuit ...........................................................................8
MOSFET Selection........................................................................8
PC Board Layout Considerations................................................9
Outline Dimensions ........................................................................11
Ordering Guide ...........................................................................11
Rev. 2 | Page 2 of 11 | www.onsemi.com


Features FEATURES All-in-one synchronous buck dri ver Bootstrapped high-side drive One PW M signal generates both drives Anticros s-conduction protection circuitry Outpu t disable control turns off both MOSFET s to float output per Intel® VRM 10 sp ecification APPLICATIONS Multiphase des ktop CPU supplies Single-supply synchro nous buck converters Dual Bootstrapped , 12 V MOSFET Driver with Output Disabl e ADP3110 GENERAL DESCRIPTION The ADP31 10 is a dual, high voltage MOSFET drive r optimized for driving two N-channel M OSFETs, which are the two switches in a nonisolated synchronous buck power con verter. Each of the drivers is capable of driving a 3000 pF load with a 25 ns propagation delay and a 30 ns transitio n time. One of the drivers can be boots trapped and is designed to handle the h igh voltage slew rate associated with f loating high-side gate drivers. The ADP 3110 includes overlapping drive protect ion to prevent shoot-through current in the external MOSFETs. The OD pin shuts off both the high-side a.
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