AN2208 datasheet(27/51 Pages) STMICROELECTRONICS

27 / 51 page

AN2208

6 Electromagnetic compatibility (EMC) tests

27/51

The maximum surge voltage may not exceed 2kV for line-to-line coupling mode and 2kV for

line-to-PE coupling mode. The test is performed while the HSD output port is switched On/Off

at 1Hz. The maximum length of the cables between the EUT and CDN is 2 meters.

6.5.2

Output port tests

Figure 24 illustrates the output port test setup. The maximum surge voltage and coupling mode

is same as with the power supply tests. The test is performed while the HSD output port is

switched On/Off with both polarities. The output lines are tested between VCC/GND and PE.

6.6

IEC 61000-4-6 conducted immunity

The reference design boards are tested on the Input/Output ports and Power supply lines with a

maximum voltage of 10 VRMS. The test signal is basically a sinusoidal waveform, whose

frequency sweeps from 150 kHz up to 80 MHz with a 80% amplitude modulation at 1 kHz of the

same signal. The EUT clearance from all metallic objects must be at least 0.5 meters.

Figure 23. Power supply tests (IEC 61000-4-5)

Figure 24. Test on Output Ports (IEC 61000-4-5)

AN2208 Datasheet(PDF) 27 Page - STMicroelectronics