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| DRV8412_11 Datasheet, PDF (15/31 Pages) Texas Instruments – Dual Full Bridge PWM Motor Driver | |||
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| ◁ |
www.ti.com
During T_OC Period
PVDD
PWM_HS
Load
Current
DRV8412
DRV8432
SLES242D â DECEMBER 2009 â REVISED JULY 2011
CBC with Low Side OC
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 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
VDD
1uF
100 nF
BST_D
GVDD_C
GVDD_D
1uF
1uF
PVDD
Figure 8. Application Diagram Example for Full Bridge Mode Operation
Copyright © 2009â2011, Texas Instruments Incorporated
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