Definition of the electrical transients and tests

AN3361

4/15

Doc ID 018589 Rev 1

The most severe negative pulse is pulse 1 (Figure 3). It can reach -100 V during 2 ms and a

peak current of 10 A in shorted conditions.

Figure 3.

ISO 7637-2 pulse 1

Table 3.

Parameter values for test pulse 1

Parameter

12 V system

-75 V to -100 V

10

Ω

2 ms

1 µs

(1)

1.

0.5 s to 5 s

200 ms

(2)

2.

application of the pulse.

<100 µs

t

t

t

t

t

2

3

1

d

r

0.1xU

0.9xU

S

S

t

U