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NDXS0512C Datasheet(PDF) 5 Page - Murata Manufacturing Co., Ltd.

Part No. NDXS0512C
Description  Isolated 7.5W Wide Input Single & Dual Output DC/DC Converters
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Maker  MURATA [Murata Manufacturing Co., Ltd.]
Homepage  http://www.murata.com
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NDXS0512C Datasheet(HTML) 5 Page - Murata Manufacturing Co., Ltd.

   
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NDX Series
Isolated 7.5W Wide Input Single & Dual Output DC/DC Converters
KDC_NDXC.G01 Page 5 of 6
All enquiries: www.murata-ps.com/support
www.murata-ps.com
OSCILLOSCOPE
Y INPUT
SUPPLY
C1 C2 C3
R1
T1
R2
Input
Output
DC/DC Converter
R LOAD
+
+
-
-
CHARACTERISATION TEST METHODS
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test configuration with the inclusion of recommended input and output capacitors.
C1
1μF X7R multilayer 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
Input Reflected Ripple Current Test Method
Input reflected ripple current measurements are performed with the following test configuration with the inclusion of recommended input and output capacitors.
C1
220uF with ESR of <0.1Ω at 100kHz, rated at supply voltage
L1
12uH rated at 150% minimum of the DC current taken by the converter.
C2
The recommended input capacitor for the DC/DC converter.
L
Load
DC/DC
Converter
+ Input
- Input
C1
C2
Supply +v
Supply
-v
Current Probe


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