Datasheet

NXE1 Series
Isolated 1W Single Output SM DC/DC Converters
KDC_NXE1.E01 Page 4 of 8
All enquiries: www.murata-ps.com/support
www.murata-ps.com
EFFICIENCY VS LOAD
NXE1S0303MC NXE1S0305MC
NXE1S0505MC
0
10
20
30
40
50
60
70
80
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
0
10
20
30
40
50
60
70
80
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
0
10
20
30
40
50
60
70
80
0 10 20 30 40 50 60 70 80 90 100
Efficiency (%)
Load (%)
CHARACTERISATION TEST METHODS
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration.
C1 1µF X7R m ultilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC/DC converter
C2
10µF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC/DC converter with an ESR of less
than 100mΩ at 100 kHz
C3 100nF multilayer ceramic capacitor, general purpose
R1 450Ω resistor, carbon film, ±1% tolerance
R2 50Ω BNC termination
T1 3T of the coax cable through a ferrite toroid
RLOAD Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires
Measured values are multiplied by 10 to obtain the specified values.
Differential Mode Noise Test Schematic
OSCILLOSCOPE
Y INPUT
SUPPLY
C1 C2 C3 R1 T1
R2
Input Output
DC/DC Converter
R LOAD
+
+
-
-