AN2985

EMC immunity tests

Doc ID 15716 Rev 2

13/19

Figure 13.

Burst timing waveform

Table 4 shows the results of a burst test. Normal performance has been observed when

applying two different disturbance levels on the output ports and Vcc main voltage power

supply.

2.3

Surge test

A high energy surge test was performed in differential mode. A high surge signal was

injected on the DUT (device under test) through a 42

Ω decoupling resistor. The test

consisted of three positive and three negative discharges with a repetition rate of 1

discharge per minute.

Figure 14 shows the standard timing waveform applied on the DUT.

Table 4.

Burst test results

Burst standard

test routines

Level

Voltage

level (kV)

1.

Classification of the test:

(Criteria A): normal performance

(Criteria B): temporary degradation or loss of function or performance with automatic return to normal operation

(Criteria C): temporary degradation or loss of function with external intervention to recover normal operation

(Criteria D): degradation or loss of function, need replacement of damaged components to recover normal

operation.

IEC 61000-4-4

Level 1

0.5

A

IEC 61000-4-4

Level 2

1

A

IEC 61000-4-4

Level 3

2

A

IEC 61000-4-4

Level 4

4

A