IMX7/IMS7 DC-DC Series Data Sheet
7-Watt DC-DC Converters
®
Electromagnetic Compatibility (EMC)
A suppressor diode together with an input filter form an
effective protection against high input transient voltages, which
typically occur in many installations, but especially in battery-
driven mobile applications.
Electromagnetic Immunity
Table 8: Immunity type tests
Phenomenon
Standard
Class
level
Coupling
mode 1
Value
applied
Waveform
Source
imped.
Test
procedure
In
Per-
oper. form.2
Electrostatic
discharge
to case5
IEC/EN
61000-4-2
2
3
contact discharge
air discharge
antenna
4000 Vp
8000 Vp
1/50 ns
330 Ω
10 positive and
10 negative
discharges
yes
B
Electromagnetic IEC/EN
field
36
23
10 V/m
3 V/m3
AM 80%
1 kHz
n.a.
n.a.
80 – 1000 MHz
yes
yes
A
A
ENV 50204
3
23
antenna
10 V/m
3 V/m3
PM, 50% duty
cycle, 200 Hz
repetition frequ.
900 MHz
Electrical fast
transients/burst
IEC/EN
61000-4-4
4
33
direct +i/–i
4000 Vp bursts of 5/50 ns
2000 Vp 5 kHz repet. rate,
50 Ω
60 s positive,
60 s negative
transients per
coupling mode
yes
B
3
transients with
15 ms burst
duration, and
300 ms period
Surges
IEC/EN
61000-4-5
3 4
+i/–i
+i/–i
2000 Vp
1000 Vp
1.2/50 μs
2 Ω
5 pos. and 5 neg.
surges
yes
yes
B
A
3
23 4
RF conducted
immunity
IEC/EN
61000-4-6
3
23
10 VAC
3 VAC
AM modul. 80%
1 kHz
50 Ω
0.15 to 80 MHz
150 Ω
1
i = input, o = output
2
3
4
5
6
Performance criterion: A = normal operation, no deviation from specifications, B = temporary deviation from specs possible
Valid for 24IMS7 and 48IMS7
External components required
R or Trim pin open, i pin connected with Vi–
Corresponds to the railway standard EN 50121-3-2:2000, table 9.1
Electromagnetic Emissions
Date: 5.9.07
40IMX7-24-24-8 Peak
Time: 08:00
PMM 8000 PLUS
Name: 40_7_24
Date: 5.9.07
Time: 08:18
PMM 8000 PLUS
Name: 20_7_15
dbμV
80
20IMX7-15-15-8 Peak
dbμV
80
EN 55022 A
EN 55022 A
60
40
60
40
20
0
20
0
0.2
0.5
1
2
5
10
20 MHz
0.2
0.5
1
2
5
10
20 MHz
Fig. 16b
Fig. 16a
40IMX7-24-24-8: Typical conducted emissions (peak) at the
input at Vi nom and Io nom according to EN 55011/22. Output
leads 0.1 m, twisted. External input capacitor (1 μF ceramic +
47 μF electrolytic cap)
20IMX7-15-15-8: Typical conducted emissions (peak) at the
input at Vi nom and Io nom according to EN 55011/22. Output
leads 0.1 m, twisted. External input capacitor (1 μF ceramic +
100 μF electrolytic cap)
BCD20007-G Rev AD, 4-Nov-09
Page 11 of 15
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