DRV8312 Datasheet, PDF (14/31 Pages) Texas Instruments – Three Phase PWM Motor Driver

DRV8312
DRV8332
SLES256 – MAY 2010
During T_OC Period
PVDD
PWM_HS
Load
Current
CBC with Low Side OC
www.ti.com
Current Limit
Load
PWM_HS
PWM_LS
PWM_LS
GND_X
T_LS T_OC T_HS
Figure 7. Cycle-by-Cycle Operation with Low Side OC (dashed line: normal operation; solid line: CBC
event)
GVDD
330 mF
Controller
(MSP430
C2000 or
Stellaris MCU)
GVDD
47 mF
DRV8332
PVDD
1 mF
3.3
1000 mF
1mF
GVDD_B
GVDD_A
10 nF
OTW
FAULT
PWM_A
RESET_A
Roc_adj
1
PWM_B
OC_ADJ
GND
100 nF
AGND
VREG
M3
M2
BST_A
100 nF
PVDD_A
Loc
OUT_A
Rsense_A 100nF
GND_A
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
1 mF
1mF
PWM_C
VDD
GVDD_C
PVDD_C
100 nF
BST_C
GVDD_C
100nF
PVDD
Figure 8. DRV8332 Application Diagram for Three-Phase Operation
14
Submit Documentation Feedback
Product Folder Link(s): DRV8312 DRV8332
Copyright © 2010, Texas Instruments Incorporated