DS_Q48SK12025_07012010
10
THERMAL CURVES
(WIT H HEAT SP READ ER )
Fi gu re 20: Temperature measu rement l ocation
* The all ow e d m axim um ho t spot te mpe rature is defin ed at 112
Q48SK12025(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Transverse Orientation,With Heatspreader)
0
5
10
15
20
25
25 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature ( )
Output Current(A)
Natural
Convection
100LFM
200LFM
300LFM
400LFM
500LFM
600LFM
Figure 21: Output current vs. ambient temperature and air
velocity @Vin=48V(Transverse Orientation, with heat spreader)
THERMAL CURVES
(WITHOUT HEAT SP READER)
Figure 18: Temperature meas urement location
* The allow ed maxi mum hot spot tem peratur e is defi ned at 118
Q48SK12025(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Transverse Orientation)
0
5
10
15
20
25
25 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature ( )
Output Current(A)
Natural
Convection
100LFM
200LFM
300LFM
400LFM
500LFM
600LFM
Figure 19: Outpu t current vs. ambi ent temperature and air
velocity @Vin=48V(Transverse Orientation , without heat
spreader)
