Q36SR12017_12272012
10
*
THERMAL CURVES
(WITH HEAT SPREADER)
HOT SPOT 2
AIRFLOW
Figure 22: Temperature measurement location.* The allowed
maximum hot spot 2 temperature is defined at 110
Q36SR12017(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 24V (Transverse Orientation,With Heatspreader)
0
3
6
9
12
15
18
25 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature ( )
Output Current (A)
Natural
Convection
600LFM
500LFM
400LFM
300LFM
200LFM
100LFM
Fig ure 23: Output current vs. ambient temperature and ai r velocity
@Vin=24V(Transver se Orientation, Airflow di rection fr om Vi n+ to
V in-,wi th heat sprea der)
Q36SR12017(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Transverse Orientation,With Heatspreader)
0
3
6
9
12
15
18
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
Fig ure 24: Output current vs. ambient temperature and ai r velocity
@Vin=48V(Transver se Orientation, Airflow di rection fr om Vi n+ to
V in-,wi th heat sprea der)
THERMAL CURVES
(WITHOUT HEAT SPREADER)
HOT SPOT 1
AIRFLOW
NTC RESISTOR
Figure 19: Temperature measurement location.* The allowed
maximum hot spot1 tem perature is defined at 125
Q36SR12017(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 24V (Transverse Orientation)
0
3
6
9
12
15
18
25 30 35 40 45 50 55 60 65 70 75 80 85
Ambient Temperature ( )
Output Current (A)
Natural
Convection
600LFM
500LFM
400LFM
300LFM
200LFM
100LFM
Fi gu re 20: Output current vs. ambient temperature and air
veloci ty @Vi n =24V(Transverse Orientation, Airflow direction
from V in+ to Vin-,with out heat spreader)
Q36SR12017(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Transverse Orientation)
0
3
6
9
12
15
18
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
Fi gu re 21: Output current vs. ambient temperature and air
veloci ty @Vi n =48V(Transverse Orientation, Airflow direction
from Vin+ to Vin-,w ithout heat spreader)
