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參數(shù)資料
| 型號： | NDXS4812EC |
| 廠商： | MURATA POWER SOLUTIONS INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 7.5 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | ROHS COMPLIANT, METAL PACKAGE-6 |
| 文件頁數(shù)： | 5/6頁 |
| 文件大小： | 128K |
| 代理商： | NDXS4812EC |
Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232
NDX Series
Isolated 7.5W Wide Input Single & Dual Output DC/DC Converters
2010/07/05 KDC_NDXC.E01
Page 5 of 6
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
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
100nF multilayer ceramic capacitor, general purpose
450Ω resistor, carbon film, +/-1% tolerance
50Ω BNC termination
3T of the coax cable through a ferrite toroid
Resistive load to the maximum power rating of the DC/DC converter. Connections should be made via twisted wires
C2
C3
R1
R2
T1
RLOAD
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
L1
C2
220uF with ESR of <0.1Ω at 100kHz, rated at supply voltage
12uH rated at 150% minimum of the DC current taken by the converter.
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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