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ADP3631ARMZ-R7

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
High Speed, Dual, 2 A MOSFET Driver
ADP3629/ADP3630/ADP3631
Rev. 0
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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.
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Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2009 Analog Devices, Inc. All rights reserved.
FEATURES
Industry-standard-compatible pinout
High current drive capability
Precise threshold shutdown comparator
UVLO with hysteresis
Overtemperature warning signal
Overtemperature shutdown
3.3 V-compatible inputs
Rise time and fall time: 10 ns typical at 2.2 nF load
Fast propagation delay
Matched propagation delays between channels
Supply voltage: 9.5 V to 18 V
Dual outputs can be operated in parallel
(ADP3629/ADP3630)
Rated from −40°C to +85°C ambient temperature
8-lead SOIC_N and 8-lead MSOP
APPLICATIONS
AC-to-DC switch mode power supplies
DC-to-DC power supplies
Synchronous rectification
Motor drives
GENERAL DESCRIPTION
The ADP3629/ADP3630/ADP3631 are dual, high current, high
speed drivers, capable of driving two independent N-channel
power MOSFETs. The ADP3629/ADP3630/ADP3631 use the
industry-standard footprint but add high speed switching per-
formance and improved system reliability.
The ADP3629/ADP3630/ADP3631 have an internal temperature
sensor and provide two levels of overtemperature protection: an
overtemperature warning and an overtemperature shutdown at
extreme junction temperatures.
The SD function, generated from a precise internal comparator,
provides fast system enable or shutdown. This feature allows
redundant overvoltage protection, complementing the protec-
tion inside the main controller device, or provides safe system
shutdown in the event of an overtemperature warning.
The wide input voltage range allows the driver to be compatible
with both analog and digital PWM controllers.
Digital power controllers are supplied from a low voltage supply,
and the driver is supplied from a higher voltage supply. The
ADP3629/ADP3630/ADP3631 add UVLO and hysteresis func-
tions, allowing safe startup and shutdown of the higher voltage
supply when used with low voltage digital controllers.
FUNCTIONAL BLOCK DIAGRAM
1
8
2
7
3
6
4
5
OVERTEMPERATURE
PROTECTION
NONINVERTING
INA,
INA
PGND
INB,
INB
SD
OUTA
VDD
OUTB
OTW
V
DD
V
DD
INVERTING
NONINVERTING
INVERTING
UVLO
V
EN
ADP3629/ADP3630/ADP3631
08401-101
Figure 1.
ADP3629/ADP3630/ADP3631
Rev. 0 | Page 2 of 16
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Timing Diagrams .......................................................................... 4
Absolute Maximum Ratings ............................................................ 6
Thermal Resistance ...................................................................... 6
ESD Caution .................................................................................. 6
Pin Configurations and Function Descriptions ........................... 7
Typical Performance Characteristics ............................................. 8
Test Circuit ...................................................................................... 10
Theory of Operation ...................................................................... 11
Input Drive Requirements (INA,
INA
, INB,
INB
, and SD) .. 11
Low-Side Drivers (OUTA, OUTB) .......................................... 11
Shutdown (SD) Function .......................................................... 11
Overtemperature Protections ................................................... 12
Supply Capacitor Selection ....................................................... 12
PCB Layout Considerations ...................................................... 12
Parallel Operation ...................................................................... 12
Thermal Considerations ............................................................ 13
Outline Dimensions ....................................................................... 14
Ordering Guide .......................................................................... 14
REVISION HISTORY
9/09—Revision 0: Initial Version
ADP3629/ADP3630/ADP3631
Rev. 0 | Page 3 of 16
SPECIFICATIONS
V
DD
= 12 V, T
J
= −40°C to +125°C, unless otherwise noted.
1
Table 1.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
SUPPLY
Supply Voltage Range V
DD
9.5 18 V
Supply Current I
DD
No switching, INA, INA
, INB, and INB
disabled
1.2 3 mA
Standby Current I
SBY
SD = 5 V 1.2 3 mA
UVLO
Turn-On Threshold Voltage V
UVLO_ON
V
DD
rising, T
A
= 25°C 8.0 8.7 9.5 V
Turn-Off Threshold Voltage V
UVLO_OFF
V
DD
falling, T
A
= 25°C 7.0 7.7 8.5 V
Hysteresis 1.0 V
DIGITAL INPUTS (INA, INA, INB, INB, SD)
Input Voltage High V
IH
2.0 V
Input Voltage Low V
IL
0.8 V
Input Current I
IN
0 V < V
IN
< V
DD
−20 +20 μA
SD Threshold High V
SD_H
1.19 1.28 1.38 V
T
A
= 25°C 1.21 1.28 1.35 V
SD Threshold Low V
SD_L
T
A
= 25°C 0.95 1.0 1.05 V
SD Hysteresis V
SD_HYST
T
A
= 25°C 240 280 320 mV
Internal Pull-Up/Pull-Down Current 6 μA
OUTPUTS (OUTA, OUTB)
Output Resistance, Unbiased VDD = PGND 80 kΩ
Peak Source Current See Figure 20 2 A
Peak Sink Current See Figure 20 −2 A
SWITCHING TIME
OUTA, OUTB Rise Time t
RISE
C
LOAD
= 2.2 nF, see Figure 3 and Figure 4 10 25 ns
OUTA, OUTB Fall Time t
FALL
C
LOAD
= 2.2 nF, see Figure 3 and Figure 4 10 25 ns
OUTA, OUTB Rising Propagation Delay t
D1
C
LOAD
= 2.2 nF, see Figure 3 and Figure 4 14 30 ns
OUTA, OUTB Falling Propagation Delay t
D2
C
LOAD
= 2.2 nF, see Figure 3 and Figure 4 22 35 ns
SD Propagation Delay Low t
dL_SD
See Figure 2 32 45 ns
SD Propagation Delay High t
dH_SD
See Figure 2 48 75 ns
Delay Matching Between Channels 2 ns
OVERTEMPERATURE PROTECTION
Overtemperature Warning Threshold T
W
See Figure 6 120 135 150 °C
Overtemperature Shutdown Threshold T
SD
See Figure 6 150 165 180 °C
Temperature Hysteresis for Shutdown T
HYS_SD
See Figure 6 30 °C
Temperature Hysteresis for Warning T
HYS_W
See Figure 6 10 °C
Overtemperature Warning Low V
OTW_OL
Open drain, −500 μA 0.4 V
1
All limits at temperature extremes guaranteed via correlation using standard statistical quality control (SQC) methods.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

ADP3631ARMZ-R7

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Description:
Gate Drivers High Speed Dual 2A MOSFET Dvr
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