DRV8332-HT Datasheet, PDF (15/26 Pages) Texas Instruments – THREE PHASE PWM MOTOR DRIVER

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During T_OC Period
PVDD
PWM_HS
Load
Current
DRV8332-HT
SLES274B – AUGUST 2013 – REVISED JANUARY 2014
CBC with Low Side OC
Current Limit
PWM_LS
GND_X
Load
PWM_HS
PWM_LS
T_LS T_OC T_HS
Figure 8. 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
1mF
DRV8332
GVDD_B
GVDD_A
PVDD
1mF
100 nF
OTW
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 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
PWM_C
PVDD_C
1mF
1mF
NC
NC
VDD
GVDD_C
PVDD_C
NC
BST_C
GVDD_C
100nF
100 nF
PVDD
Figure 9. DRV8332 Application Diagram for Three-Phase Operation
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