MPD-425V
250W DC-DC Power Supply
Input Range: 40~57VDC
2.0
11.0
TO SWITCH
Power Supply
0.42
0.35
0.4
DC OUTPUT
WIRES
Specifications
* Input Voltage:
40~57VDC
* Input Current:
Max. 8A at 48VDC
* Inrush Current:
Does not exceed 10A at 48VDC input, cold start at
25
o
C
* Ripple and Noise:
< +/-1% peak to peak ripple and noise for each
output
* Line Regulation:
< +/-1% at rated load with +/-10% change in input
voltage
* Load Regulation:
+/-4% for +5V, +/-5% for +12V, +/-3% for -12V
and -5V
* Power Good Signal:
Goes high 100~500ms after all DC output are
ready
* Power Failure:
Goes low 1ms before any DC output falls
* Efficiency:
70% typical at nominal line and rated load
* Altitude:
10,000 feet
* Protection:
Input: Protection against wrong polarity if 48VDC input is inversely
connected by mistake
Output: Built-in over voltage protection. Trip point of crowbar circuit
is between 5.9~7.0V. Hiccup mode against short circuit or over load
conditions auto recovery when faulty conditions are removed
* Temperature:
0~50
o
C (operating); -40~+75
o
C (storage)
* Humidity:
5~95%; non-condensing at 40
o
C (operating)
* Connectors:
Input: Three positions terminal block
DC Output: Output provides one AT type P8/P9 and two disk drive
connector
To Switch: Female disconnects for tab size 0.250" x 0.032"
* Dimensions:
14.0 x 15.0 x 8.62 cm with +/-0.8mm and +/-0.4mm
tolerance between mounting holes
* MTBF:
178,042 hrs.
14.4
14.0
13.8
4-TAPPING #6-32
2.7
24V0V
0.5
6.4
1.6
0.5
11.5
Pin
1
2
3
Input
48VDC
0V
GND
Pin
Red
Yellow
Brown
Blue
Black
White
Output
+5V
+12V
-12V
-5V
GND
P.G.
Output
+5V
+12V
-12V
-5V
Min.
Load
1A
0A
0A
0A
Rated
Load
25A
10A
1A
1A
Max.
Load
30A
12A
2A
2A
Tolerance
+/-0.1V
+/-0.72V
+/-0.6V
+/-0.25V
0.6
4.8
2.4
8.0
8.62
Safety Standards
* Safety:
UL 1950, CSA 22.2 No.234, VDE EN 60 950
* EMI:
FCC Class B, EN55022B
* EMS:
Level 3 of IEC-801, 802
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