DRV8312_14 Datasheet, PDF (16/36 Pages) Texas Instruments – Three Phase PWM Motor Driver

DRV8312
DRV8332
SLES256D – MAY 2010 – REVISED JANUARY 2014
GVDD
330 mF
Controller
(MSP430
C2000 or
Stellaris MCU)
GVDD
47 mF
1mF
DRV8312
GVDD_B
GVDD_A
PVDD
1mF
OTW
100 nF
BST_A
3.3
1000 mF
NC
NC
10 nF
NC
PVDD_A
FAULT
PWM_A
RESET_A
Roc_adj
1
PWM_B
OC_ADJ
GND
100 nF
AGND
VREG
M3
M2
PVDD_A
Loc
OUT_A
Rsense_A
GND_A
100nF
Rsense_B
GND_B
M
Loc
OUT_B
PVDD_B
100 nF
BST_B
100nF
NC
Rsense_x £ 10 mW
NC
or
GND
Vsense < 100 mV
M1
GND
Rsense_C
RESET_B
GND_C
Loc
RESET_C
OUT_C
PWM_C
PVDD_C
1mF
1mF
NC
NC
VDD
GVDD_C
PVDD_C
NC
BST_C
GVDD_C
100nF
100 nF
PVDD
Figure 9. DRV8312 Application Diagram for Three-Phase Operation
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Controller
PWM_AH
PWM_BH
PWM_CH
PWM_AL
PWM_BL
PWM_CL
PVDD
PWM_A
PWM_B
PWM_C
RESET_A
RESET_B
RESET_C
MOTOR
OUT_A
OUT_B
OUT_C
GND_A
GND_B
GND_C
Figure 10. Control Signal Logic with Conventional 6 PWM Input Scheme
16
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