A6985F datasheet(68/77 Pages) STMICROELECTRONICS

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EMC testing results

A6985F

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DocID027738 Rev 2

EMC testing results

This chapter reports EMC testing results for the A6985F evaluation board (see Section 8 on

page 56) accordingly with the following test methods:



CE 150R for conducted emission



DP for conducted immunity

All the measurement were performed on the A6985F5V at ILOAD = 10% and 75% as defined

in Table 22.

DPI: 30 dBm for global pins, 12 dBm for local pins.

All the pins under DPI testing (see Table 22) satisfy class 3 limits.

Table 20. CE 150R test method

Conducted emission, CE 150R

Frequency range

150 kHz - 30 MHz

30 MHz - 1 GHz

Bandwidth

9 kHz

120 kHz

Step size

5 kHz

60 kHz

Dwell time

2 complete software cycles minimum

Detectors

Peak + average

Table 21. DPI test method

Conducted Immunity, DPI

Frequency

range

10 kHz -

150 kHz

150 kHz -

1 MHz

1 MHz -

10 MHz

10 MHz -

100 MHz

100 MHz -

200 MHz

200 MHz -

400 MHz

400 MHz -

1 GHz

Step size

(linear)

10 kHz

100 kHz 500 kHz

1 MHz

2 MHz

4 MHz

10 MHz

Dwell time

2 sec. but min. 2 software complete cycles

Modulation

AM 1 kHz, 80% (same peak value as CW)

Table 22. Pin testing

Pin name

Remarks

classification

DPI

VS1

Filtered VIN pin

Global

VIN

VIN pin

Global

VOUT

Regulated output voltage

Local

RST

RST pin

Local

SS/INH

SS/INH pin

Local

(X)

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