DRV8412_15 Datasheet, PDF (1/42 Pages) Texas Instruments – DRV84x2 Dual Full-Bridge PWM Motor Driver

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DRV8412, DRV8432
SLES242G – DECEMBER 2009 – REVISED DECEMBER 2014
DRV84x2 Dual Full-Bridge PWM Motor Driver
1 Features
•1 High-Efficiency Power Stage (up to 97%) With
Low R_DS(on) MOSFETs (110 mΩ at T_J = 25°C)
• Operating Supply Voltage up to 52 V
• DRV8412 (Power Pad Down): up to 2 × 3-A
Continuous Output Current (2 × 6-A Peak) in Dual
Full-Bridge Mode or 6-A Continuous Current in
Parallel Mode (12-A Peak)
• DRV8432 (Power Pad Up): up to 2 × 7-A
Continuous Output Current (2 × 12-A Peak) in
Dual Full-Bridge Mode or 14-A Continuous
Current in Parallel Mode (24-A Peak)
• PWM Operating Frequency up to 500 kHz
• Integrated Self-Protection Circuits Including
Undervoltage, Overtemperature, Overload, and
Short Circuit
• Programmable Cycle-by-Cycle Current Limit
Protection
• Independent Supply and Ground Pins for Each
Half Bridge
• Intelligent Gate Drive and Cross Conduction
Prevention
• No External Snubber or Schottky Diode is
Required
The DRV841x2 requires two power supplies, one at
12 V for GVDD and VDD, and another up to 50 V for
PVDD. The DRV841x2 can operate at up to 500-kHz
switching frequency while still maintaining precise
control and high efficiency. The devices 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 protection. The
DRV841x2 has 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.
The DRV841x2 has unique independent supply and
ground pins for each half-bridge. These pins make it
possible to provide current measurement through
external shunt resistor and support multiple motors
with different power supply voltage requirements.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8412
HTSSOP (44)
14.00 mm x 6.10 mm
DRV8432
HSSOP (36)
15.90 mm x 11.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
2 Applications
• Brushed DC and Stepper Motors
• Three-Phase Permanent Magnet Synchronous
Motors
• Robotic and Haptic Control System
• Actuators and Pumps
• Precision Instruments
• TEC Drivers
• LED Lighting Drivers
3 Description
The DRV841x2 are high-performance, integrated dual
full-bridge motor driver with an advanced protection
system.
Because of the low R_DS(on) of the H-Bridge MOSFETs
and intelligent gate drive design, the efficiency of
these motor drivers can be up to 97%. This high
efficiency enables the use of smaller power supplies
and heatsinks, and the devices are good candidates
for energy-efficient applications.
Simplified Application Diagram
GVDD
Controller
GVDD
GVDD_B
OTW
GVDD_A
BST_A
FAULT
PVDD_A
PWM_A
RESET_AB
PWM_B
OC_ADJ
OUT_A
GND_A
GND_B
OUT_B
GND
PVDD_B
AGND
VREG
M3
M2
M1
PWM_C
RESET_CD
BST_B
BST_C
PVDD_C
OUT_C
GND_C
GND_D
OUT_D
PWM_D
PVDD_D
VDD
BST_D
GVDD_C
GVDD_D
PVDD
M
M
PVDD
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.