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SI9978 Datasheet, PDF (3/6 Pages) Vishay Siliconix – Configurable H-Bridge Driver
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Si9978
Vishay Siliconix
TRUTH TABLEĊH-BRIDGE MODE
MODE
1
DIR/
INA
1
EN/ QS/
ENA INB
1
1
PWM/
ENB
BRK
0
1
1
1
0
0
1
0
1
1
0
1
0
1
0
0
1
X
1
X
X
1
1
X
0
X
X
X
1
X
1
X
X
0
ILA+
L
L
L
L
L
L
ILB+
X
X
X
X
X
X
X
GTA
H
GBA
L
GTB
L
GBB
CL/
FAULTB
1
L
L
1
L
H
L
1
L
L
1
L
H
L
H
1
L
L
L
L
1
L
L
L
L
FAULT/
FAULTA
1
1
1
1
1
1
1
X
X
X
X
X
X
X
L
L
L
L
1
0
Condition
Normal
Operation
Brake
Disable
Overcurrent
Undervoltage
on VDD
TRUTH TABLEĊHALF-BRIDGE MODE
DIR/ EN/ QS/
MODE INA ENA INB
0
1
1
X
0
0
1
X
0
X
0
1
0
X
0
0
PWM/
ENB
0
0
1
1
BRK
X
X
X
X
ILA+
L
L
L
L
0
X
1
X
X
X
0
X
X
X
1
X
X
0
X
X
X
X
X
X
ILB+
L
L
L
L
GTA
H
L
L
L
GBA
L
H
L
L
GTB
L
L
H
L
GBB
L
L
L
H
CL/
FAULTB
1
1
1
1
X
L
L
X
X
1
X
X
L
L
X
L
L
L
L
0
FAULT/
FAULTA
1
1
1
1
1
0
Condition
Normal
Operation
Overcurrent on
A
Overcurrent on
B
Undervoltage
on VDD
Document Number: 70011
S-40804—Rev. E, 26-Apr-04
www.vishay.com
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