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SLES256 – MAY 2010
DRV8312
GVDD
330
m
F
1
m
F
GVDD_B
OTW
NC
NC
FAULT
PWM_A
RESET_A
GVDD_A
BST_A
NC
PVDD_A
PVDD_A
OUT_A
GND_A
GND_B
OUT_B
PVDD_B
BST_B
NC
NC
GND
GND
Rsense_C
RESET_B
RESET_C
PWM_C
NC
GND_C
OUT_C
PVDD_C
PVDD_C
NC
BST_C
GVDD_C
100 nF
Rsense_A
Rsense_B
1
m
F
100 nF
3.3
PVDD
1000
m
F
10 nF
Loc
100nF
Controller
(MSP430
C2000 or
Stellaris MCU)
PWM_B
Roc_adj
OC_ADJ
1
GND
AGND
100 nF
VREG
M3
M2
M1
M
Loc
100nF
Rsense_x
£
10 mW
or
Vsense < 100 mV
Loc
100nF
GVDD
47
m
F
1
m
F
NC
VDD
GVDD_C
1
m
F
PVDD
100 nF
Figure 9. DRV8312 Application Diagram for Three-Phase Operation
PVDD
Controller
PWM_AH
PWM_BH
PWM_CH
PWM_A
PWM_B
PWM_C
MOTOR
OUT_A
OUT_B
RESET_A
PWM_AL
RESET_B
PWM_BL
RESET_C
PWM_CL
OUT_C
GND_A
GND_B
GND_C
Figure 10. Control Signal Logic with Conventional 6 PWM Input Scheme
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