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参数资料
| 型号： | NTH1212MC |
| 厂商： | MURATA POWER SOLUTIONS INC |
| 元件分类： | 电源模块 |
| 英文描述： | 2-OUTPUT 2 W DC-DC REG PWR SUPPLY MODULE |
| 封装： | ROHS COMPLIANT, SMD-26/12 |
| 文件页数： | 3/6页 |
| 文件大小： | 149K |
| 代理商： | NTH1212MC |
Technical enquiries email: mk@murata-ps.com, tel: +44 (0)1908 615232
NTH Series
Isolated 2W Dual Output SM DC/DC Converters
2010-07-08
KDC_NTHC.C01 Page 3 of 6
www.murata-ps.com
APPLICATION NOTES
Minimum load
The minimum load to meet datasheet specication is 10% of the full rated load across the specied input voltage range. Lower than 10% minimum loading will result in
an increase in output voltage, which may rise to typically double the specied output voltage if the output load falls to less than 5%.
Capacitive loading and start up
Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product
series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF.
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test conguration.
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 lm, ±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 specied values.
Differential Mode Noise Test Schematic
OSCILLOSCOPE
Y INPUT
SUPPLY
C1 C2 C3
R1
T1
R2
Input
Output
DC/DC Converter
R LOAD
+
-
Typical Start-Up Wave Form
Start-up time
μs
NTH0505MC
1026
NTH0509MC
3625
NTH0512MC
5750
NTH0515MC
8330
NTH1205MC
691
NTH1209MC
2645
NTH1212MC
3285
NTH1215MC
6120
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