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PDF ADP3110 Data sheet ( Hoja de datos )
| Número de pieza | ADP3110 | |
| Descripción | 12V MOSFET Driver | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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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
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
©2005 Analog Devices, Inc. All rights reserved.
1 page  
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
BST 1
8 DRVH
IN 2 ADP3110 7 SW
OD 3 TOP VIEW 6 PGND
VCC 4 (Not to Scale) 5 DRVL
Figure 2. 8-Lead SOIC_N Pin Configuration
ADP3110
Table 3. Pin Function Descriptions
Pin No. Mnemonic Description
1 BST
Upper MOSFET Floating Bootstrap Supply. A capacitor connected between the BST and SW pins holds this
bootstrapped voltage for the high-side MOSFET as it is switched.
2 IN
Logic Level PWM Input. This pin has primary control of the driver outputs. In normal operation, pulling this pin
low turns on the low-side driver; pulling it high turns on the high-side driver.
3 OD
Output Disable. When low, this pin disables normal operation, forcing DRVH and DRVL low.
4 VCC
Input Supply. This pin should be bypassed to PGND with ~1 μF ceramic capacitor.
5 DRVL
Synchronous Rectifier Drive. Output drive for the lower (synchronous rectifier) MOSFET.
6 PGND
Power Ground. This pin should be closely connected to the source of the lower MOSFET.
7 SW
Switch Node Connection. This pin is connected to the buck-switching node, close to the upper MOSFET’s
source. It is the floating return for the upper MOSFET drive signal. It is also used to monitor the switched voltage
to prevent turn-on of the lower MOSFET until the voltage is below ~1 V.
8 DRVH
Buck Drive. Output drive for the upper (buck) MOSFET.
Rev. 0 | Page 5 of 12
5 Page 
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OUTLINE DIMENSIONS
5.00 (0.1968)
4.80 (0.1890)
8
4.00 (0.1574)
3.80 (0.1497) 1
5
6.20 (0.2440)
4 5.80 (0.2284)
0.25 (0.0098)
0.10 (0.0040)
COPLANARITY
0.10
1.27 (0.0500)
BSC
1.75 (0.0688)
1.35 (0.0532)
0.50
0.25
(0.0196)
(0.0099)
×
45°
0.51 (0.0201)
SEATING 0.31 (0.0122)
PLANE
8°
0.25 (0.0098) 0° 1.27 (0.0500)
0.17 (0.0067) 0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-012-AA
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
Figure 7. 8-Lead Standard Small Outline Package [SOIC_N]
Narrow Body
(R-8)
Dimensions shown in millimeters and (inches)
ADP3110
ORDERING GUIDE
Model
Temperature Range
ADP3110KRZ1
0°C to 85°C
ADP3110KRZ-RL1 0°C to 85°C
1 Z = Pb-free part.
Package Description
Standard Small Outline Package [SOIC_N]
Standard Small Outline Package [SOIC_N]
Package Option
R-8
R-8
Quantity per Reel
N/A
2500
Rev. 0 | Page 11 of 12
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ADP3110.PDF ] | |
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