Q48SE12018NRFA Datasheet, PDF (10/14 Pages) Delta Electronics, Inc. – Delphi Series Q48SE, Quarter Brick Family DC/DC Power Modules 38~75V in, 11.8V/18A out, 216W

THERMAL CURVES
(WITHOUT HEAT SPREADER)
AIRFLOW
HOT SPOT 1
THERMAL CURVES
(WITH HEAT SPREADER)
AIRFLOW
NTC RESISTOR
HOT SPOT 2
Figure 18: * Hot spot 1& NTC resistor temperature measured Figure 20: * Hot spot 2 temperature measured point. The
points. The allowed maximum hot spot 1 temperature is defined ^{allowed maximum hot spot 2 temperature is defined at 112℃}
at 121℃
Q48SE12018(Standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current(A)
@Vin = 48V (Transverse Orientation)
18
Q48SE12018(Standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current(A)
@Vin = 48V (Transverse Orientation,With Heatspreader)
18
16
Natural
Convection
14
100LFM
12
200LFM
10
300LFM
8
400LFM
6
500LFM
4
16
14
Natural
Convection
12
100LFM
10
8
200LFM
6
300LFM
4
2
2
0
25
30
35
40
45
50
55
60
65
70
75
Ambient
80
Tem peratu re
(8℃⁵ )
Figure 19: Output current vs. ambient temperature and air
velocity @Vin=48V(Transverse Orientation, airflow from Vin+ to
Vin-,without heat spreader)
0
25
30
35
40
45
50
55
60
65
70
75
Ambient
80
Temperatu
re
(8℃⁵ )
Figure 21: Output current vs. ambient temperature and air
velocity @Vin=48V(Transverse Orientation, airflow from Vin+ to
Vin-,with heat spreader)
DS_Q48SE12018_06242013
10