Electromagnetic Compatibility (EMC)
A suppressor diode together with an input filter form an ef-
fective protection against high input transient voltages
Electromagnetic Immunity
which typically occur in many installations, but especially in
battery driven mobile applications.
Table 8: Immunity type tests
Phenomenon
Electrostatic
discharge
to case
Standard
1
IEC/EN
61000-4-2
Class
Level
2
3
2
Coupling
mode
2
contact discharge
air discharge
antenna
Value
applied
4000 V
p
8000 V
p
3 V/m
AM 80%
1 kHz
PM, 50% duty
cycle, 200 Hz
resp. frequ.
3
direct +i/–i
2000 V
p
bursts of 5/50 ns
5 kHz rep. rate
transients with
15 ms burst
duration and a
300 ms period
1.2/50 s
50
Waveform
1/50 ns
Source
Imped.
330
Test
procedure
10 positive and
10 negative
discharges
26…1000 MHz
900 MHz
In
Per-
oper. form.
3
yes
B
Electromagnetic IEC/EN
field
61000-4-3
ENV 50204
yes
A
Electrical fast
transient/burst
IEC/EN
61000-4-4
1 min positive
1 min negative
transients per
coupling mode
yes
A
Surge
IEC/EN
61000-4-5
5
IEC/EN
61000-4-6
ETR 283
(19 Pfl 1)
4
2
+i/–i
1000 V
p
2
5 pos. and 5 neg.
impulses per
coupling mode
0.15...80 MHz
150
3 positive
yes
B
Conducted
disturbancies
Transient
1
2
3
4
5
2
+i/–i
+i/–i
3 V
rms
AM modulated
(130 dB V) 80%, 1 kHz
150 V
p
0.1/0.3 ms
50
limited to
<100 A
yes
yes
A
B
Related and previous standards are referenced in:
Technical Information: Standards.
i = input, o = output.
A = normal operation, no deviation from specification, B = temporary deviation from specs. possibe.
For 48 IMS 30 types (additional external components required).
External components required.
Electromagnetic Emission
[dB V]
90
80
EN 55022 A
70
60
50
40
30
20
10
0
2
0.01
0.02
0.05
0.1
0.5
10
20
30
1
5
07020
EN 55022 B
MHz
Fig. 10
Typical disturbance voltage (quasi-peak) at the input ac-
cording to CISPR 11/EN 55011 and CISPR 22/EN 55022,
measured at U
i nom
and I
o nom
. Output leads 10 cm, twisted.
(48 IMS30-0503-9G )
7/11
POWER-ONE [ POWER-ONE ]
