DRV8412
DRV8422
DRV8432
www.ti.com
SLES242A –DECEMBER 2009–REVISED DECEMBER 2009
Dual Full Bridge PWM Motor Driver
Check for Samples: DRV8412 DRV8422 DRV8432
Because of the low RDS(on) of the H-Bridge MOSFETs
1
FEATURES
and intelligent gate drive design, the efficiency of
these motor drivers can be up to 97%, which enables
the use of smaller power supplies and heatsinks, and
are good candidates for energy efficient applications.
•
•
•
High-Efficiency Power Stage (up to 97%) with
Low RDS(on) MOSFETs (80 mΩ at TJ = 25°C)
Operating Supply Voltage up to 50 V
(70 V Absolute Maximum)
The DRV8412/22/32 require two power supplies, one
at 12 V for GVDD and VDD, and another up to 50 V
for PVDD. The DRV8412/22/32 can operate at up to
500-kHz switching frequency while still maintain
precise control and high efficiency. They also have an
innovative protection system safeguarding the device
against a wide range of fault conditions that could
damage the system. These safeguards are
short-circuit protection, overcurrent protection,
undervoltage protection, and two-stage thermal
DRV8412 (power pad down): up to 2 x 3 A
Continuous Output Current (2 x 6 A Peak) in
Dual Full Bridge Mode or 6 A Continuous
Current in Parallel Mode (12 A Peak)
•
•
DRV8422 (power pad up): up to 2 x 5 A
Continuous Output Current ( 2 x 9 A Peak) in
Dual Full Bridge Mode or 10 A Continuous
Current in Parallel Mode (18 A Peak)
DRV8432 (power pad up): up to 2 x 7 A
Continuous Output Current ( 2 x 12 A Peak) in
Dual Full Bridge Mode or 14 A Continuous
Current in Parallel Mode (24 A Peak)
protection.
The
DRV8412/22/32
have
a
current-limiting circuit that prevents device shutdown
during load transients such as motor start-up. A
programmable overcurrent detector allows adjustable
current limit and protection level to meet different
motor requirements.
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PWM Operating Frequency up to 500 kHz
Integrated Self-Protection Circuits Including
Undervoltage, Overtemperature, Overload, and
Short Circuit
The DRV8412/22/32 have unique independent supply
and ground pins for each half bridge, which makes it
possible to provide current measurement through
external shunt resistor and support multiple motors
with different power supply voltage requirements.
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Programmable Cycle-by-Cycle Current Limit
Protection
Independent Supply and Ground Pins for Each
Half Bridge
Simplified Application Diagram
Intelligent Gate Drive and Cross Conduction
Prevention
GVDD
PVDD
GVDD_A
BST_A
GVDD_B
OTW
No External Snubber or Schottky Diode is
Required
FAULT
PVDD_A
OUT_A
GND_A
GND_B
OUT_B
PVDD_B
BST_B
PWM_A
RESET_AB
PWM_B
M
APPLICATIONS
•
•
Brushed DC and Stepper Motors
Three Phase Permanent Magnet Synchronous
Motors
Robotic and Haptic Control System
Actuators and Pumps
Precision Instruments
TEC Drivers
OC_ADJ
Controller
GND
AGND
VREG
M3
•
•
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•
BST_C
PVDD_C
OUT_C
GND_C
GND_D
OUT_D
M2
M1
M
PWM_C
RESET_CD
DESCRIPTION
PVDD
PWM_D
VDD
PVDD_D
BST_D
GVDD
The DRV8412/22/32 are high performance,
integrated dual full bridge motor drivers with an
advanced protection system.
GVDD_C
GVDD_D
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
UNLESS OTHERWISE NOTED this document contains
Copyright © 2009, Texas Instruments Incorporated
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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