VNH2SP30-E

8/26

Figure 5. Typical Application Circuit For Dc To 20khz PWM OperationShort Circuit Protection

considered as an output pin by the device.

The fault conditions are:

- overtemperature on one or both high sides (for example

if a short to ground occurs as it could be the case

described in line 1 and 2 in the table below);

- short to battery condition on the output (saturation

detection on the Low-Side Power MOSFET).

Possible origins of fault conditions may be:

detection on high side A.

saturation detection.

When a fault condition is detected, the user can know

In any case, when a fault is detected, the faulty leg of the

bridge is latched off. To turn-on the respective output

level.

M

µC

Reg 5V

+ 5V

CS

PWM

D

S

G

b) N MOSFET

3.3K

1K

1K

1K

10K

33nF

1.5K

100K

+5V

1K

3.3K

1K

> 50uF

CS

1

1

0

1

OPEN

H

High Imp.

1

0

0

1

OPEN

L

High Imp.

0

1

0

1

OPEN

H

0

0

0

1

OPEN

L

High Imp.

X

X

0

0

OPEN

OPEN

High Imp.

X

1

0

1

OPEN

H

X

0

0

1

OPEN

L

High Imp.

Fault Information

Protection Action