Technical Reference Note
Rev.10.13.14_#1.1
AVE240C-48S12
Page 16
Thermal Considerations, con’t
The converter can operate with a smaller heatsink and sufficient airflow. Figure 14 shows the derating output current vs.
ambient air temperature at different air velocitieswith a specified heatsink.
.
20
15
10
5
0
25
40
55
70
85
Temperature: Ta (
)
℃
400LFM(2m/s)
300LFM(1.5m/s)
0LFM(0m/s)
200LFM(1m/s)
100LFM(0.5m/s)
Figure 14 Output power derating, 48Vin, air flowing across the converter from Vin- to Vin+
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