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Analog Devices Semiconductor Electronic Components Datasheet

ADP3410 Datasheet

Dual MOSFET Driver with Bootstrapping

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ADP3410 pdf
a
FEATURES
All-In-One Synchronous Buck Driver
One PWM Signal Generates Both Drives
Anticross-Conduction Protection Circuitry
Programmable Transition Delay
Synchronous Override Control
Undervoltage Lockout
Programmable Overvoltage Shutdown
VCC Good Signal Drives Auxiliary Circuits
Shutdown Quiescent Current < 10 A
APPLICATIONS
Mobile Computing CPU Core Power Converters
Multiphase Desktop CPU Supplies
Single-Supply Synchronous Buck Converters
Standard-to-Synchronous Converter Adaptations
Dual MOSFET Driver
with Bootstrapping
ADP3410
FUNCTIONAL BLOCK DIAGRAM
VCC
VCCGD
GND
ADP3410
4.4V
SD
IN
DLY
OVPSET
1.2V
CONTROL
AND
OVERLAP
VCC PROTECTION
CIRCUIT
VCC
BST
DRVH
SW
DRVL
DRVLSD
PGND
SRMON
GENERAL DESCRIPTION
The ADP3410 is a dual MOSFET driver optimized for driving
two N-channel FETs that are the two switches in the non-
isolated synchronous buck power converter topology. Each of
the drivers is capable of driving a 3000␣ pF load with a 20␣ 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
ADP3410 has several protection features: overlapping drive
prevention (ODP), undervoltage lockout (UVLO) with perform-
ance specified at very low VCC levels, and overvoltage protection
(OVP) that can be used to monitor either the input or output.
Additional features include: programmable transition delay, a
synchronous drive override control pin, a synchronous drive
status monitor and, in conjunction with exiting from the UVLO
mode, a VCC Good (VCCGD) signal capable of driving a 10␣ mA
load. The quiescent current, when the device is disabled, is less
than 10 µA.
5V VBATT
TO PWM
CONTROLLER
VCC
SD VCCGD
ADP3410
IN BST
DRVLSD DRVH
SRMON
SW
OVPSET DRVL
DLY
GND PGND
Figure 1. Typical Application Circuit
VOUT
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1999


Analog Devices Semiconductor Electronic Components Datasheet

ADP3410 Datasheet

Dual MOSFET Driver with Bootstrapping

No Preview Available !

ADP3410 pdf
ADP3410–SPECIFICATIONS1 (TA = 0؇C to 85؇C, VCC = 5 V, VBST = 4 V to 26 V, SD > 2 V, unless otherwise
noted)
Parameter
Symbol
Conditions
SUPPLY
Supply Voltage Range
Quiescent Current
Shutdown Mode
Operating Mode
VCCGD OUTPUT
Output Voltage High
Output Voltage Low
VCCGD Propagation Delay2, 3
(See Figure 4)
SYNCHRONOUS RECTIFIER
MONITOR
Output Voltage High
Output Voltage Low
Transition Time2
Propagation Delay2, 3
VCC
ICCQ
tpdhVCCGD,
tpdlVCCGD
VSD < 0.8 V
VSD > 2.0 V, No Switching
VCC = 4.6 V, ILOAD = 10 mA
VCC < UVLO, ILOAD = 10 µA
SD Goes High
SD Goes Low
VCC = 4.6 V, CLOAD = 100 pF
trSRMON, tfSRMON VCC = 4.6 V, CLOAD = 100 pF
tpdhSRMON
DRVLSD Is High and
DRVL Goes High, or
DRVLSD Goes Low
tpdlSRMON
DRVLSD Is High and
DRVL Goes Low
UNDERVOLTAGE LOCKOUT
UVLO Threshold
UVLO Hysteresis
UVLO Logic Active Threshold
UVLO2, 3 Propagation Delay
(See Figure 5)
OVERVOLTAGE PROTECTION
Trip Threshold
Hysteresis
Bias Current
OVP2, 3, 4 Propagation Delay
SYNCHRONOUS RECTIFIER ENABLE
DRVLSD
Input Voltage High5
Input Voltage Low5
Propagation Delay2, 3
(See Figure 3)
SD INPUT
Input Voltage High5
Input Voltage Low5
tpdhUVLO
tpdlUVLO
tpdhOVP
tpdlDRVLSD,
tpdhDRVLSD
VCC Goes High
VCC Goes Low
VCC = 4.6 V, OVPSET Goes High
VCC = 4.6 V,
CLOAD (DRVL) = 3 nF
PWM INPUT (IN)
Input Voltage High5
Input Voltage Low5
Min Typ Max
4.15 5.0 6.0
10
12
4.5 4.55
0.1 0.2
10
10
4.15
50
20
15
15
4.2 4.4 4.6
0.05
1.5
10
10
1.145 1.2
0.8
0.2
1.255
1.0
0.5
2.0
0.8
30
2.0
0.8
2.0
0.8
Unit
V
µA
mA
V
V
µs
µs
V
mV
ns
ns
ns
V
V
V
µs
µs
V
V
µA
µs
V
V
ns
V
V
V
V
THERMAL SHUTDOWN
Overtemperature Trip Point
OTP Hysteresis
HIGH-SIDE DRIVER
Output Resistance, Sourcing Current
Output Resistance, Sinking Current
DRVH Transition Times2
(See Figure 6)
DRVH Propagation Delay2, 3
(See Figure 6)
trDRVH,
tfDRVH
tpdhDRVH,
tpdlDRVH
165 °C
10 °C
VBST – VSW = 4.6 V
VBST – VSW = 4.6 V
VBST – VSW = 4.6 V, CLOAD = 3 nF
2.5 5
2.5 5
20 35
ns
VBST – VSW = 4.6 V
10 20 Note 6 ns
25 ns
–2– REV. 0


Part Number ADP3410
Description Dual MOSFET Driver with Bootstrapping
Maker Analog Devices
Total Page 11 Pages
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