Table 23. Truth table

N°

Control pins

Control bits

Failure bits

Output pins

SPI

DO

Comment

EN DIR

PW

M

TS/ACT_

OFF

FW

FW_

PAS

CP_

LOW

OV

UV

DS_

MON

TSD WDTO GH1 GL1 GH2 GL2

GL_E

R

1

0

X

X

X

X

X

X

X

X

X

X

X

RL

RL

RL

RL

T

Standby mode

2

1

X

X

X

X

X

X

X

X

X

X

X

RL

RL

RL

RL

1

Power-on reset

31

X

X

0

X

X

0

0

0

0

0

0

L

L

L

L

0

EXT_TS = 1 (external thermal

shutdown)

4

1

X

X

0

X

X

0

0

0

0

0

0

L

L

L

L

0

EXT_TS = 0 (active Off)

51

X

X

1

X

X

1

0

0

0

0

0

RL

RL

RL

RL

0

Charge pump voltage too low

6

1

X

X

1

X

X

0

0

0

0

1

0

RL

RL

RL

RL

1

Internal thermal shutdown

71

X

X

1

X

X

0

1

0

0

0

0

L

L

L

L

1

VS overvoltage

81

X

X

1

X

X

0

0

1

0

0

0

L

L

L

L

1

VS undervoltage

91

X

X

1

X

X

0

0

0

1

0

0

L(1)

L(1)

L(1)

L(1)

0

Short-circuit(1)

10 1

X

X

1

X

X

0

0

0

0

0

1

L

L

L

L

1

Watchdog time out

11

1

0

1

1

X

X

0

0

0

0

0

0

L

H

H

L

0

-

12 1

X

0

1

0

0

0

0

0

0

0

0

L

H

L

H

0

Act. free wheeling mode LS

13 1

0

0

1

0

1

0

0

0

0

0

0

L

H

L

L

0

Pass. free wheeling mode LS

14 1

1

0

1

0

1

0

0

0

0

0

0

L

L

L

H

0

Pass. free wheeling mode LS

15 1

1

1

1

X

X

0

0

0

0

0

0

H

L

L

H

0

-

16 1

X

0

1

1

0

0

0

0

0

0

0

H

L

H

L

0

Act. free wheeling mode HS

17 1

0

0

1

1

1

0

0

0

0

0

0

L

L

H

L

0

Pass. free wheeling mode HS

18 1

1

0

1

1

1

0

0

0

0

0

0

H

L

L

L

0

Pass. free wheeling mode HS

1. Only the half bridge (low-side and high-side) where one MOSFET is in short-circuit condition is switched-off. Both MOSFETs of the other half bridge remain active and

driven by DIR and PWM.