ADP3418KRZ データシートの表示（PDF） - ON Semiconductor
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ADP3418KRZ Datasheet PDF : 13 Pages
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Dual Bootstrapped, 12 V MOSFET
Driver with Output Disable
ADP3418
FEATURES
All-in-one synchronous buck driver
Bootstrapped high-side drive
1 PWM signal generates both drives
Anticross-conduction protection circuitry
Output disable control turns off both MOSFETs to float the
output per Intel® VR 10 and AMD Opteron™ specifications
APPLICATIONS
Multiphase desktop CPU supplies
Single-supply synchronous buck converters
GENERAL DESCRIPTION
The ADP3418 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 of the
drivers is capable of driving a 3000 pF load with 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 ADP3418 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 shutdowns.
The ADP3418 is specified over the commercial temperature
range of 0°C to 85°C and is available in an 8-lead SOIC package.
FUNCTIONAL BLOCK DIAGRAM
12V
ADP3418
IN 2
DELAY
SQ
RQ
CMP
DELAY
CMP
1V
CVCC
VCC
6
VCC
4
D1
BST
1
CBST1
DRVH
8
RBST1
SW
7
DRVL
5
PGND
6
CBST2
Q1
RG
TO
INDUCTOR
Q2
3
OD
Figure 1.
©2010 SCILLC. All rights reserved.
May 2010 – Rev. 6
Publication Order Number:
ADP3418/D
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