DRV8834 Datasheet, PDF (17/30 Pages) Texas Instruments – DUAL BRIDGE STEPPER OR DC MOTOR DRIVER

DRV8834
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SLVSB19A – FEBRUARY 2012 – REVISED MARCH 2012
APPLICATIONS INFORMATION
The DRV8834 is a very flexible motor driver. It can be used to drive two DC motors or a stepper motor, in a
number of different configurations.
The following applications schematics show various configurations and connections for the DRV8834.
Note that component values, especially for RSENSE and the DECAY pins, may be different depending on your
motor and application. Refer to the information above to determine the best values for these components in your
application.
Phase/Enable Mode Driving Two DC Motors
In this configuration, the DRV8834 is used to drive two independent DC motors. Current up to 1 A per motor is
possible. The M1 pin is pulled low to allow slow decay PWM from the controller (if desired) to control the motor
speed by PWMing the xENBL inputs, and ADECAY and BDECAY are connected to ground to set slow decay
mode during current limiting. The value of the RSENSE resistors shown is for a 1-A current limit; if current
limiting is not needed, the AISEN and BISEN pins may be connected directly to ground. If the sleep function is
not needed, nSLEEP can be connected to VM with an approximate 47-kΩ resistor.
Figure 4. Phase/Enable Mode Driving Two DC Motors
Copyright © 2012, Texas Instruments Incorporated
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