VNF9Q20F datasheet(86/109 Pages) STMICROELECTRONICS

86 / 109 page

ISO Pulse

The immunity of the device against transient electrical emissions, conducted along the supply lines and injected

into the VCC pin, is tested in accordance with ISO7637-2:2011(E) and ISO 16750-2:2012.

The related function performances status classification is shown in Table 71.

Test pulses are applied directly to DUT (Device Under Test) both in ON and OFF-state and in accordance to ISO

7637-2:2011(E), chapter 4. The DUT is intended as the present device only, with external components as shown

in Figure 37.

“Status II” is defined in ISO 7637-1 Function Performed Status Classification (FPSC) as follows: "The function

does not perform as designed during the test but returns automatically to normal operation after the test".

Table 71. ISO 7637-2 - Electrical transient conduction along supply line

Test pulse

2011(E)

Test pulse severity level

with status II functional

performance status

Minimum number

of pulses or test

time

Burst cycle/pulse

repetition time

Pulse duration and

pulse generator internal

impedance

Level

US(1)

1(2)

III

-112 V

500 pulses

0.5 s

5 s

2 ms, 10 Ω

2a(3)

III

+55 V

500 pulses

0.2 s

5 s

50 µs, 2 Ω

3a(2)

-220 V

1 h

90 ms

100 ms

0.1 µs, 50 Ω

+150 V

1 h

90 ms

100 ms

0.1 µs, 50 Ω

4(4)

-7 V

1 pulse

100 ms, 0.01 Ω

Load dump according to ISO 16750-2:2010

Test B(3)

+87 V

5 pulses

1 min

400 ms, 2 Ω

1. US is the peak amplitude as defined for each test pulse in ISO 7637-2:2011(E), see Section 5.6.

2. Device enters reset state and must be reinitialized.

3. With 35 V external suppressor referred to ground (-40 °C < TJ < 150 °C).

4. Test pulse in ISO7637-2:2004(E).

VNF9Q20F

ISO Pulse

DS13909 - Rev 6

page 86/109

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