Q48SQ12033NRFH Datasheet, PDF (10/13 Pages) Delta Electronics, Inc. – Delphi Series Q48SQ, Quarter Brick Family DC/DC Power Modules 36~75V in, 12V/33A out, 400W

THERMAL CURVES
(WITHOUT HEAT SPREADER)
AIRFLOW
THERMAL CURVES
(WITH HEAT SPREADER)
AIRFLOW
NTC RESISTOR
HOT SPOT1
Figure 21: * Hot spot1 and NTC resistor temperature measured
point. The allowed maximum hot spot1 temperature is defined
at 111℃.
Q48SQ12033(Standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current (A)
@Vin = 48V (Transverse Orientation)
600LFM
30
500LFM
25
Natural
20 Convection
15
100LFM
200LFM
10
300LFM
5
400LFM
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 22: Output current vs. ambient temperature and air
velocity @Vin=48V(Transverse Orientation, airflow from Vin+ to
Vin-,without heat spreader)
HOT SPOT2
Figure 23: * Hot spot2 temperature measured point. The
allowed maximum hot spot2 temperature is defined at 105℃.
Q48SQ12033(Standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current (A)
@Vin = 48V (Transverse Orientation,With Heatspreader)
32
600LFM
28
24
Natural
20 ^Convection
16
100LFM
200LFM
12
300LFM
8
400LFM
4
500LFM
0
25
30
35
40
45
50
55
60
65
70
75
80
85
Ambient Temperature (℃)
Figure 24: Output current vs. ambient temperature and air
velocity @Vin=48V(Transverse Orientation, airflow from Vin+ to
Vin-,with heat spreader)
10
DS_Q48SQ12033_09272013