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PQ48018HGA40 Datasheet(PDF) 5 Page - SynQor Worldwide Headquarters

Part # PQ48018HGA40
Description  40 Amp, No Heatsink, Isolated DC/DC Converter
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Manufacturer  SYNQOR [SynQor Worldwide Headquarters]
Direct Link  http://www.synqor.com
Logo SYNQOR - SynQor Worldwide Headquarters

PQ48018HGA40 Datasheet(HTML) 5 Page - SynQor Worldwide Headquarters

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Product # PQ48018HGA40
Phone 1-888-567-9596
Doc.# 005-2HG418C Rev. C
12/17/02
Page 5
Half
Half
Brick
Brick
Performance Curves
48Vin 1.8Vout 40A
60
65
70
75
80
85
90
95
100
0
4
8
12
162024
2832
3640
Load Current (A)
36 Vin
48 Vin
75 Vin
Figure 1: Efficiency at nominal output voltage vs. load current for min-
imum, nominal, and maximum input voltage at 25°C.
82
83
84
85
86
87
88
89
90
0
100
200
300
400
500
Air Flow (LFM)
25 C
40 C
55 C
Figure 2: Efficiency at nominal output voltage and 60% rated power vs.
airflow rate for ambient air temperatures of 25°C, 40°C, and 55°C
(nominal input voltage).
0
2
4
6
8
10
12
14
16
0
4
8
1216
2024
2832
3640
Load Current (A)
36 Vin
48 Vin
75 Vin
Figure 3: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25°C.
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
0
100
200
300
400
500
Air Flow (LFM)
25 C
40 C
55 C
Figure 4: Power dissipation at nominal output voltage and 60% rated
power vs. airflow rate for ambient air temperatures of 25°C, 40°C, and
55°C (nominal input voltage).
0
5
10
15
20
25
30
35
40
0
2540
5570
85
Ambient Air Temperature (oC)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0 LFM (0 m/s)
Figure 5: Maximum output power derating curves vs. ambient air tem-
perature for airflow rates of 0 LFM through 400 LFM with air flowing
from output to input (nominal input voltage).
Figure 6: Thermal plot of converter at 40 amp load current with 55°C
air flowing at the rate of 200 LFM. Air is flowing across the converter
from output to input (nominal input voltage).


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