DRV8402 Datasheet, PDF (1/18 Pages) Texas Instruments – Dual Full Bridge PWM Motor Driver

DRV8402
www.ti.com ........................................................................................................................................................................................... SLES222 – DECEMBER 2008
Dual Full Bridge PWM Motor Driver
FEATURES
1
• High-Efficiency Power Stage (up to 96%) with
Low R_DS(on) MOSFETs (80 mΩ at T_J = 25°C)
• Operating Supply Voltage up to 50 V
(65 V Absolute Maximum)
• 10 A Continuous Output Current and 24 A
Peak Current per Device
• PWM Operating Frequency up to 500 kHz
• Integrated Self-Protection Circuits
• 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
• Thermally Enhanced DKD (36-pin PSOP3)
Package
APPLICATIONS
• DC and Brushless DC Motors
• Three Phase Permanent Magnet Synchronous
Motors
• Robotic and Haptic Control System
• Actuators and Pumps
• Precision Instruments
• TEC Drivers
DESCRIPTION
The DRV8402 is a high performance, integrated dual
full bridge motor driver with an advanced protection
system. Because of the low R_DS(on) and intelligent
gate drive design, the efficiency of this motor driver
can be up to 96%, which enables the use of smaller
power supplies and heatsinks, and is a good
candidate for energy efficient applications. This
device requires two power supplies, one at 12 V for
GVDD and VDD, and one up to 50 V for PVDD. The
DRV8402 is capable of driving 5 A continuous RMS
current and 12 A peak current per full bridge with low
idle power dissipation. It can also be used for up to
10 A continuous current and 24 A peak current in
parallel full bridge operation.
The DRV8402 can operate at up to 500 kHz
switching frequency while still maintains precise
control and high efficiency. It also has an innovative
protection system integrated on-chip, 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 DRV8402 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 DRV8402 has 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.
Simplified Application Diagram
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.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated