MER1 Series
1kVDC Isolated 1W Single Output DC/DC Converters
KDC_MER1.B06 Page 7 of 11
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EMC FILTERING AND SPECTRA
FILTERING
An input capacitor and inductor is required to meet EN 55022 Curve B, Quasi-Peak EMC limit, as shown in the following plots. The following plots show positive and
negative quasi peak and CISPR22 Average Limit B (green line) and Quasi Peak Limit B (pink line) adherence limits.
MER1S0505SC MER1S0509SC
DC
DC
L
C
Load
Power
Source
0
10
20
30
40
50
60
70
80
1.00E+05 1.00E+06 1.00E+07 1.00E+08
dBuV
Frequency (Hz)
0
10
20
30
40
50
60
70
80
1.00E+05 1.00E+06 1.00E+07 1.00E+08
dBuV
Frequency (Hz)
Inductor Capacitor
L, µH SMD Through Hole C, µF
MER1S0505SC 10 82103C 11R103C 2.2
MER1S0509SC 10 82103C 11R103C 2.2
MER1S0512SC 10 82103C 11R103C 1
MER1S0515SC 10 82103C 11R103C 2.2
MER1S1205SC 10 82103C 11R103C 2.2
MER1S1209SC 10 82103C 11R103C 2.2
MER1S1212SC 10 82103C 11R103C 0.68
MER1S1215SC 10 82103C 11R103C 2.2
MER1S1505SC 10 82103C 11R103C 2.2
MER1S1509SC 10 82103C 11R103C 1
MER1S1512SC 10 82103C 11R103C 1
MER1S1515SC 10 82103C 11R103C 1
MER1S2405SC 10 82103C 11R103C 2.2
MER1S2409SC 10 82103C 11R103C 2.2
MER1S2412SC 10 82103C 11R103C 2.2
MER1S2415SC 10 82103C 11R103C 2.2
MER1S4805SC 10 82103C 11R103C 4.7
MER1S4809SC 10 82103C 11R103C 4.7
MER1S4812SC 10 82103C 11R103C 4.7
MER1S4815SC 10 82103C 11R103C 4.7
