10 | Motor Drive and Control Solutions Texas Instruments
DRV8x integrated motor drivers
Introducution
The DRV8x family of integrated motor
drivers enables manufacturers to
quickly and easily spin their motors.
Integrated drivers provide higher
performance and better protection
within a smaller board footprint
versus traditional discrete solutions.
Furthermore, integrated drivers are
simpler and faster to design because
they do not require discrete drive-stage
design experience.
Integrated motor drivers include the gate driver and
MOSFETs in a single package, optimizing board space and
time-to-market for the designer. These solutions offer high
levels of integrated, multi-layer protection schemes for the
entire drive stage.
Gate drivers can more easily scale to meet different motor
current requirements. By using a gate driver solution, design-
ers can keep their overall system architecture the same and
change the MOSFETs without changing the complete drive
stage design. This ensures efficient, optimal performance for
each motor while still providing protection and integrated
intelligence to the design.
The TI advantage
Quicker time to spin
TI offers an integrated drive-stage,
current sensing, on-chip control logic,
simple control interfaces, easy-to-use
EVMs and design-in documentation
to help with all aspects of motor drive
development.
Robust, reliable and fully protected
All of TI’s motor drivers include fast-
acting protection against short circuits,
thermal overload, under-voltage and
shoot-through. When a fault condition
is detected, the driver is quickly shut
down to protect the motor and driver IC.
The right part for each application
TI has a broad portfolio of motor drivers
with different levels of integration, multi
-
ple control interface options and a wide
range of power ratings. For instance the
DRV8x family includes both motor drivers
and FET gate drivers that support voltage
ranges from 1.8 V to 60 V and load
currents as high as 100 A. This family
is also capable of driving various motor
types including brushed DC, brushless
DC, steppers and other inductive loads,
such as solenoids and relays.
Gate
Driver
FETs
LogicControl
Protection and Current Control
Gate
Driver
FETs
LogicControl
Protection and
Current Control
TI’s featured DRV8x motor drivers (see page 15 for full selection table) www.ti.com/motordrivers
Device Motor Type Description
Supply
voltage
(V)
I
OUT
cont.
(A)
I
OUT
peak
(A)
Price*
DRV8870
Brushed-DC
3.6 A brushed DC driver with current regulation 6.5 to 45 2 3.6 1.28
DRV8871
Brushed-DC
3.6 A brushed DC driver with integrated current sensing (eliminates need for external current sensing resistor for current
regulation)
6.5 to 45 2 3.6 1.41
DRV8701
Brushed-DC
12 V to 24 V brushed DC gate driver with integrated current shunt amplifier, 3.3 V or 5 V LDO and adjustable gate drive settings 5.9 to 45
Ext FETs Ext FETs
0.92
DRV8884
Stepper
1.5 A stepper driver with on-chip microstepping and integrated current sensing for current regulation (16 microsteps) 8 to 37 1 1 1.30
DRV8885
Stepper
1.5 A stepper driver with on-chip microstepping and integrated current sensing for current regulation (16 microsteps) 8 to 37 1 1.5 1.49
DRV8880
Stepper
2.0 A stpper driver with on-chip microstepping and AutoTune™ for automatic adaptive current decay (16 microsteps) 6.5 to 45 1.4 2 1.92
DRV8305
Brushless-DC
3-phase FET gate driver with three integrated current-sense amplifiers 4.4 to 45
Ext FETs Ext FETs
2.30
*Suggested resale price in U.S. dollars in quantities of 1,000.
†
Available in Q1 versions. New products are listed in bold red.
Integrated motor driver
Gate driver with external FETs