Datasheet

CMR Series
Isolated 0.75W Single and Dual Output Isolated DC/DC Converters
KDC_CMR.A03 Page 4 of 6
www.murata-ps.com/support
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. The SRF (Self Resonant Frequency) should be
>20MHz.
DC
DC
L
C
Load
Power
Source
Inductor Capacitor
L, µH SMD Through Hole C, µF
CMR100C 10 82103C 11R103C 4.7
CMR118C 10 82103C 11R103C 4.7
CMR0505SA3C 22 82223C 11R223C 1
CMR0512S3C 150 82154C 11R154C 0.33
CMR0515S3C 220 82224C 11R224C 0.33
CMR1215S3C 220 82224C 11R224C 0.22
TEMPERATURE DERATING GRAPH
150100
50
0
-40
0
0.75
Safe Operating Area
85°C
Ambient Temperature (°C)
Output Power (W)
120°C