NML Series
Isolated 2W Single Output DC/DC Converters
APPLICATION NOTES
Minimum load
The minimum load to meet datasheet speci?cation is 10% of the full rated load across the speci?ed input voltage range. Lower than 10% minimum loading will result in
an increase in output voltage, which may rise to typically double the speci?ed 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.
Start-up time
μs
Typical Start-Up Wave Form
NML0505SC
NML0509SC
NML0512SC
NML0515SC
NML1205SC
NML1209SC
NML1212SC
NML1215SC
790
1154
2265
2998
396
880
1156
2394
Ripple & Noise Characterisation Method
Ripple and noise measurements are performed with the following test con?guration.
C1
C2
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
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 speci?ed values.
Differential Mode Noise Test Schematic
DC/DC Converter
OSCILLOSCOPE
SUPPLY
+
Input
-
+
Output
-
C1 C2 C3
R1
T1
R2
Y INPUT
R LOAD
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KDC_NML.E02 Page 3 of 5
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相关代理商/技术参数
NML1212S 功能描述:DC/DC转换器 2W SNGL OUT 12-12VDC RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压(标称): 输出端数量:1 输出电压(通道 1):3.3 V 输出电流(通道 1):600 mA 输出电压(通道 2): 输出电流(通道 2): 安装风格:SMD/SMT 封装 / 箱体尺寸:
NML1212SC 功能描述:DC/DC转换器 2W SNGL OUT 12-12VDC Single Output RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压(标称): 输出端数量:1 输出电压(通道 1):3.3 V 输出电流(通道 1):600 mA 输出电压(通道 2): 输出电流(通道 2): 安装风格:SMD/SMT 封装 / 箱体尺寸:
NML1215S 功能描述:DC/DC转换器 2W SNGL OUT 12-15VDC RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压(标称): 输出端数量:1 输出电压(通道 1):3.3 V 输出电流(通道 1):600 mA 输出电压(通道 2): 输出电流(通道 2): 安装风格:SMD/SMT 封装 / 箱体尺寸:
NML1215SC 功能描述:DC/DC转换器 2W SNGL OUT 12-15VDC Single Output RoHS:否 制造商:Murata 产品: 输出功率: 输入电压范围:3.6 V to 5.5 V 输入电压(标称): 输出端数量:1 输出电压(通道 1):3.3 V 输出电流(通道 1):600 mA 输出电压(通道 2): 输出电流(通道 2): 安装风格:SMD/SMT 封装 / 箱体尺寸:
NMLQ04B1N0TRF 制造商:NIC Components Corp 功能描述:IND SMT 0402?1NH?1A?50M OHM - Tape and Reel
NMLQ04B1N5TRF 制造商:NIC Components Corp 功能描述:IND SMT 0402?1.5NH?1A?50M OHM - Tape and Reel
NMLQ04B1N8TRF 制造商:NIC Components Corp 功能描述:IND SMT 0402?1.8NH?800MA?70M OHM - Tape and Reel
NMLQ04B2N2TRF 制造商:NIC Components Corp 功能描述:IND SMT 0402?2.2NH?800MA?70M OHM - Tape and Reel 制造商:NIC Components Corp 功能描述:IND SMT 0402?2.2NH?800MA?70M OHM - Cut TR (SOS)