Q48SE12033 Datasheet, PDF (10/14 Pages) Delta Electronics, Inc. – Delphi Series Q48SE, Quarter Brick Family DC/DC Power Modules

THERMAL CURVES
(WITHOUT HEAT SPREADER)
AIRFLOW
THERMAL CURVES
(WITH HEAT SPREADER)
AIRFLOW
NTC RESISTOR HOT SPOT 1
Figure 18: * Hot spot 1& NTC resistor temperature measured
points. The allowed maximum hot spot 1 temperature is defined
at 117℃
Q48SE12033(Standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current(A)
@Vin = 48V (Transverse Orientation)
33
600LFM
30
27
500LFM
24
21
Natural
Convection
18
100LFM
15
200LFM
12
300LFM
9
6
400LFM
3
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 19: Output current vs. ambient temperature and air
velocity @Vin=48V(Transverse Orientation, airflow from Vin+ to
Vin-,without heat spreader)
HOT SPOT 2
Figure 20: * Hot spot 2 temperature measured point. The allowed
maximum hot spot 2 temperature is defined at 108℃
Q48SE12033(Standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current(A)
@Vin = 48V (Transverse Orientation, With Heatspreader)
33
30
600LFM
27
24
Natural
Convection
21
100LFM
18
200LFM
15
300LFM
12
9
400LFM
6
500LFM
3
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 21: Output current vs. ambient temperature and air velocity
@Vin=48V(Transverse Orientation, airflow from Vin+ to Vin-,with
heat spreader)
DS_Q48SE12033_06242013
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