1.1

Input Characteristics

NO.

Items

Technical Requirement

Unit

Remark

1.1.1

Rated Input Voltage

100-240

Vac

1.1.2

Input Voltage Range

90-264

Vac

1.1.3

Frequency Range

50/60

Hz

1.1.4

Power Factor

>95%

Rated input voltage, full load. 

1.1.5

Inrush Current

≤60

A

Vin=110/220Vac, cold condition. 

1.1.6

Maximum Input Current

≤4.0

A

1.1.7

Efficiency

≥90%

Rated input, full load. 

1.1.8

Input No-Load Power Consumption

-

W

1.2

Output Characteristics

NO.

Items

Technical Requirement

Unit

Remark

1.2.1

Rated Output Voltage

56V

Vdc

54-56V adjustable. 

1.2.2

Output Voltage Range

54.5-57.5V

Vdc

54-56V adjustable. 

1.2.3

No Load Output Voltage Variation △V

<0.2

Vdc

1.2.4

Rated Output Current

3.4A Natural cooling. 

4.4A Fan cooling. 

A

Rated power: 250W. When the output voltage raise, the output current correspondingly reduce according to the below formula: V*I=W. 

1.2.5

Minimum Output Current

0

A

1.2.6

Output Peak Current

-

A

1.2.7

Load Regulation

±3%

1.2.8

Line Regulation

±1%

1.2.9

Output Ripple and Noise

≤560

mVp-p

Rated input, full load. 

Made the oscilloscope with 20MHz bandwidth, output resistor side with 10uF & 104 capacitors parallel to decouple.

1.2.10

Output Overshoot at Turn On and Turn Off

±10%

 1.2.11

Dynamic Response

Overshoot Amplitude

±5% 

Variety load between 25%-50%-25% or 50%-75%-50%.

Recovery Time

△t≤200