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Ultra Low Noise Switching Power Supply



  • Low Ripple & Noise
    40mVp-p (5Vout), 50mVp-p (12, 15, 24 & 48Vout)
  • Universal Input
  • High Efficiency
  • Meet EMC Safety Standards
  • RoHS Free, Vinyl Chloride Free


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Model Number DFS100A-5 DFS100A-12 DFS100A-15 DFS100A-24 DFS100A-48
Input Input Voltage Range Rating 100-240Vac Single Phase * Range : 85Vac to 264Vac
Frequency Range Rating : 50/60Hz, * Range : 47Hz to 63Hz
Input Current 100/200VAC * 1 1.0A / 0.5 A at Full Load 1.4 A / 0.7 A at Full Load
Efficiency * 1 76% / 78% 83% / 85% 84% / 86% 85% / 87% 86% / 88%
Inrush Current 100 / 200VAC * 1 15A / 30A * When it operates under cold start
Leakage Current 0.17mA typ@100Vac, 60Hz / 0.44mA typ@ 240Vac, 60Hz
Power Factor
[AC100Vin / 200Vin]
0.98 / 0.91 0.99 / 0.95
Model Number DFS100A-5 DFS100A-12 DFS100A-15 DFS100A-24 DFS100A-48
Output DC Output Voltage 5V 12V 15V 24V 48V
Output Current 10A 8.4A 6.7A 4.2A
Maximum Output Power 50.0W 100.8W 100.5W 100.8W 100.8W
Line Regulation / Load Regulation [Max] 20mV / 40mV 48mV / 96mV 60mV / 120mV 96mV / 150mV 192mV / 300mV
Ripple & Noise * 2 40mVp-p 50mVp-p
Model Number DFS100A-5 DFS100A-12 DFS100A-15 DFS100A-24 DFS100A-48
Others OCP * 3 > 110% ( Shut down output)
OVP * 3 > 115% (Shut down output)
Remote Control Available * Option
Cooling System Convection
Model Number DFS100A-5 DFS100A-12 DFS100A-15 DFS100A-24 DFS100A-48
Mechanical Size & Weight Without cover type : 62 x 35 x 222 mm, 380g ( 2.44� x 1.38� x 8.74� inch, 0.84 lbs)
With cover type : 72 x 45 x 247mm, 670g (2.83� x 1.77� x 9.72� inch, 1.48 lbs)
Input & Output Terminal Connector
Noise Immunity EN61000-4-2, -3, -4, -5, -6, -8, -11
Model Number DFS100A-5 DFS100A-12 DFS100A-15 DFS100A-24 DFS100A-48
Others Conduction Noise EN55022-B, FCC-B, VCCI-B
Safety Certifications UL60950-1, CSA-C22.2, NO. 60950-1, EN60950-1 * UL File No. E237238
Model Number DFS100A-5 DFS100A-12 DFS100A-15 DFS100A-24 DFS100A-48
Environmental Condition Operating Temperature / Humidity - 10 degree C to + 60 degree C / 30%RH to 90% RH * Non Condensing
Storage Temperature / Humidity - 20 degree C to + 85 degree C / 10%RH to 95% RH * Non Condensing
Vibration Resistance 19.6m/s 2 10 to 55Hz 1minute Period 1hour for each X, Y, Z direction
Shock Resistance < 196.1m/s 2 11ms 1 time for each X, Y, Z direction
Model Number DFS100A-5 DFS100A-12 DFS100A-15 DFS100A-24 DFS100A-48
Isolation Isolation Voltage Input. Output : 3KVac for 1min Cut off current 20mA * Under normal temp & humidity condition
Input. FG : 2KVac for 1min Cut off current 20mA * Under normal temp & humidity condition
Output.FG : 500Vac for 1min Cut off current 100mA * Under normal temp & humidity condition
Isolation Resistance Input. Output , Input.FG, Output.FG DC500V > 100M ohm

*1 Conditions: Ta = 25 degree C
*2 JEITA specified measuring method
*3 Upon over voltage or over current conditions, input power must be removed to allow unit reset to occur within 1 minute.
Note: Derating is required by operating temperature. Follow the overload and specification in manual to avoid the damage of power supply.




  • Warning: Large capacitive load should be applied or removed only with NO AC power applied. Large inrush current may result in damage.
  • Incorrect operation will damage Power Supply.

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