Datasheet

MEV3 Series
3kVDC Isolated 3W Single Output DC/DC Converters
KDC_MEV3.C01 Page 6 of 7
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APPLICATION NOTES (continued)
Output Ripple Reduction
By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max.
Component selection
Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as possible, ceramic types are recommended.
The voltage rating should be at least twice (except for 15V output), the rated output voltage of the DC/DC converter.
Inductor: The rated current of the inductor should not be less than that of the output of the DC/DC converter. At the rated current, the DC resistance of the inductor
should be such that the voltage drop across the inductor is <2% of the rated voltage of the DC/DC converter.
EFFICIENCY VS LOAD
MEV3505xxSC Input Voltage MEV3512XXSC Input Voltage
DC
DC
L
C
Load
Power
Source
0
10
20
30
40
50
60
70
80
90
0 102030405060708090100
Load (%)
Efficiency (%)
5V
9V
12V
15V
0
10
20
30
40
50
60
70
80
90
0 102030405060708090100
Load (%)
Efficiency (%)
5V
9V
12V
15V
Inductor Capacitor
L, µH SMD Through Hole C, µF
MEV3S0505SC
10 84103C 11R103C 4.7
MEV3S0509SC 22 84223C 11R223C 2.2
MEV3S0512SC 47 84473C 11R473C 1
MEV3S0515SC 47 84473C 11R473C 1
MEV3S1205SC 10 84103C 11R103C 4.7
MEV3S1209SC 22 84223C 11R223C 2.2
MEV3S1212SC 47 84473C 11R473C 1
MEV3S1215SC 47 84473C 11R473C 1