Application EMC immunity

AN4075

20/23

Doc ID 022954 Rev 1

4.3.3

Test setup

The test was executed on the IO-Link bus lines (L+, C/Q and I/Q vs. earth reference).

Tests were made on the output lines vs. earth - common mode (CM), as well as on output

lines vs. L- (GND) - in differential mode. The earth reference is coupled by

minimized. The surge pulse was coupled with a coupling network of 42

Ω/0.5 μF.

After every surge sequence, the power supply current and C/Q, I/Q current sink values were

measured and compared to their initial state and the functionality of the receiver and driver

paths (functionality of the output switches) was checked.

4.3.4

Test results

Table 6.

Application surge immunity - common mode

Surge test signal amplitude, test result at polarity (+ / -)

Applied to

500 V

1 kV

1.5 kV

2 kV

2.5 kV

L+ OFF

- / -

1.

The values of the L6360 internal registers did not change.

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

L+ ON

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

C/Q LS ON

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

C/Q HS ON

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

C/Q Rx mode

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

I/Q

- / -

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

A(1) / A(1)

Table 7.

Application surge immunity - differential mode

Surge test signal amplitude, test result at polarity (+ / -)

Applied to

500 V

1 kV

1.5 kV

2 kV

2.5 kV

L+ OFF

1.

The values of the L6360 internal registers did not change.

A(1)/ A(1)

- / -

- / -

- / -

L+ ON

2.

The L6360 registers were reset, IRQ signal is activated.

B(2) / B(2)

- / -

- / -

- / -

C/Q LS ON

A(1)/ A(1)

A(1) / B(2)

- / -

- / -

- / -

C/Q HS ON

A(1)/ A(1)

A(1) / B(2)

- / -

- / -

- / -

C/Q Rx mode

A(1) / B(2)

B(2) / B(2)

- / -

- / -

- / -

I/Q

A(1)/ A(1)

A(1)/ A(1)

- / -

- / -

- / -