IMX7, IMS7 Series Data Sheet

7-Watt DC-DC Converters

BCD20007-G Rev AF, 31-Jul-2015

Page 11 of 14

MELCHER

The Power Partners.

Electromagnetic Emissions

typically occur in many installations, but especially in battery-

driven mobile applications.

Electromagnetic Compatibility (EMC)

A suppressor diode together with an input filter form an

effective protection against high input transient voltages, which

Fig. 14a

20IMX7-15-15-8: Typical conducted emissions (peak) at the

leads 0.1 m, twisted. External input capacitor (1 µF ceramic +

100 µF electrolytic cap)

Electromagnetic Immunity

Table 8: Immunity type tests

Phenomenon

Standard

Class

Coupling

Value

Waveform

Source

Test

In

Perf-

level

applied

imped.

procedure

oper.

Electrostatic

IEC/EN

2

contact discharge

1/50 ns

330

Ω

10 positive and

yes

B

discharge

61000-4-2

3

air discharge

10 negative

discharges

Electromagnetic

IEC/EN

antenna

10 V/m

AM 80%

n.a.

80 – 1000 MHz

yes

A

field

1 kHz

ENV 50204

3

antenna

10 V/m

PM, 50% duty

n.a.

900 MHz

yes

A

cycle, 200 Hz

repetition frequ.

Electrical fast

IEC/EN

4

direct +i/–i

bursts of 5/50 ns

50

Ω

60 s positive,

yes

B

transients/burst

61000-4-4

60 s negative

transients with

transients per

15 ms burst

coupling mode

duration, and

300 ms period

Surges

IEC/EN

+i/–i

1.2/50 µs

42

Ω

5 pos. and 5 neg.

yes

B

61000-4-5

0.5 µF

surges

RF conducted

IEC/EN

3

+i/–i

10 VAC

AM modul. 80%

50

Ω

0.15 to 80 MHz

yes

A

immunity

61000-4-6

3 VAC

1 kHz

150

Ω

PMM 8000 PLUS

Date: 5.9.07

Time: 08:00

dbµV

80

60

20

40

0

0.2

0.5

1

2

5

10

20 MHz

EN 55022 A

40IMX7-24-24-8

Peak

Name: 40_7_24

20IMX7-15-15-8

Peak

PMM 8000 PLUS

Name: 20_7_15

Date: 5.9.07

Time: 08:18

dbµV

80

60

20

40

0

0.2

0.5

1

2

5

10

20 MHz

EN 55022 A

Fig. 14b

40IMX7-24-24-8: Typical conducted emissions (peak) at the

leads 0.1 m, twisted. External input capacitor (1 µF ceramic +

47 µF electrolytic cap)