DRV8432_15 Datasheet, PDF (17/42 Pages) Texas Instruments – DRV84x2 Dual Full-Bridge PWM Motor Driver

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8 Application and Implementation
DRV8412, DRV8432
SLES242G – DECEMBER 2009 – REVISED DECEMBER 2014
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
8.1 Application Information
The DRV841x2 devices are typically used to drive 2 brushed DC or 1 stepper motor.
The DRV841x2 can be used for stepper motor applications as illustrated in Figure 16; they can be also used in
three phase permanent magnet synchronous motor (PMSM) and sinewave brushless DC motor applications.
Figure 17 shows an example of a TEC driver application. The same configuration can also be used for DC output
applications.
8.2 Typical Applications
8.2.1 Full Bridge Mode Operation
GVDD
330 uF
Controller
(MSP430
C2000 or
Stellaris MCU)
GVDD
47 uF
1uF
PVDD
1uF
GVDD_B
GVDD_A
3.3
10 nF
1000 uF
OTW
FAULT
PWM_A
RESET_AB
Roc_adj
1
PWM_B
OC_ADJ
GND
BST_A
100 nF
PVDD_A
OUT_A
GND_A
100nF
GND_B
OUT_B
100nF
PVDD_B
Rsense_AB (option)
M
100 nF
AGND
VREG
BST_B
BST_C
100 nF
100 nF
M3
M2
M1
PWM_C
RESET_CD
PVDD_C
OUT_C
GND_C
GND_D
OUT_D
100nF
100nF
Rsense_CD (option)
M
PWM_D
PVDD_D
100 nF
VDD
1uF
BST_D
GVDD_C
GVDD_D
1uF
1uF
PVDD
Figure 8. Application Diagram Example for Full Bridge Mode Operation Schematic
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