AC DC dell desktop power supply

Specifications 1.AC DC dell desktop power supply

2.UL,FCC,CE

3.competitive price

4.OEM,ODM

5.Output voltage:5V 12V 24V 48V

5Vdc 12Vdc 24Vdc 48Vdc AC DC dell desktop power supply/ Adapter,laptop adapter,power adapter,desktop adapter   1.1Input Voltage Table 1: Lists the AC input operating voltage range. The power shall work normally and meet all electrical requirements throughout this range.    Table 1: AC Input Voltage Limitations  

Minimum	Nominal	Maximum
100Vac	110Vac/220Vac	240Vac

  1.2Input Frequency  Table 2: List the AC input operating frequency range. The power shall work normally and meet all electrical requirements throughout this range. Table 2:  AC Input Frequency Limitations  

Minimum	Nominal	Maximum
47Hz	50Hz/60Hz	63Hz

  1.3 Inrush Current   Peak inrush current shall be limited to 30A of rated input voltage and cold start at 25 degrees C, and shall not result in a permanent damage of the power supply under any conditions of load and input voltage as specified at any input voltage as specified in table 1. 1.4 Input Current Limiting  The input current should be less than 1.0A, under minimum AC input and full load. 1.5 Efficiency   The power supply efficiency shall be greater than 75% under rated input voltage. It will be measured at the typical load and maximum load. 2.2 Output Specification 2.1 DC Voltage Regulation The DC output voltages will remain within the regulation ranges shown in Table 5 when measured ate the load end of the output connectors. The voltage regulation limits do not include the transient DC load changes, which are covered in Section 3.2.4.      Table 3:  DC Output voltage regulation limits

Parameter	Line Regulation	Load regulation	Cross regulation
V1:24V	±5.0%	±5.0%	N/A

  2.2 DC Output Current      Table4: DC output current limits

Parameter	Min Current	Rate Current	Max Current	Unit
V1:24V	0.1	0.75	-	A

  2.3 Output Ripple and Noise The following table 5 is output ripple and noise requirements, it will be met throughout the load ranges specified in Section 2.2.2 and under all input voltage conditions as specified Section 2.1.1, Measurements will be made with an oscilloscope set to 20MHz bandwidth limit. The outputs will be bypassed with one 0.1uF multilayer (type X7R) and one 10uF tantalum electrolytic (low ESR) capacitors.                   Table 5: Output ripples and noise limits   

Parameter	Max.
V1:24V	240mVp-p@25 degrees C

  2.4 Output Dynamic Load Response The output voltages will remain within specified regulation limit of the nominal set voltage for changes in load as specified below under the following load steps defined below table 8. At a slew rate of 0.1Amps/uS between 50Hz to 10 KHz. Table6: Output dynamic load response limits

Dynamic Load	DC Voltage Regulation
50%~100%~50%	±10%

  2.5 Overshoot at turn-on/ turn-off Any overshoot at turn on or turn off shall be less than 10% of rated output voltage. 2.3 Protection Function . 3.1 Short Circuit Protection An output short circuit is defined as any output impedance of less than 0.1 ohms. The power supply will protect without damage to overseers of to the unit (components, connectors, etc) under the input conditions specified in Section 3.1 above. 3.2 Over Current Protection The power supply shall meet the limitation requirement as below table without any damage, the unit shall recover and function automatically after the protection is removed.         Table 7: Over Current Protection limits

Parameter	Max	Unit
V1:12V	1.5	A

  2.4 Timing 4.1 Hold up Time Hold-up time no less than 5mS at 100Vac/47Hz input and no less than 10mS at 110/220Vac/50/60Hz input, the output loading should be set up with full load during the test. 4.2 Start up Time Start up time no more than 3 seconds at 100Vac/47Hz input and no more than 2 seconds at 110/220Vac/50/60Hz, the output loading should be set up with full load during the test.