Q48SG12042NRFC_14 Datasheet, PDF (22/26 Pages) Delta Electronics, Inc. – Delphi Series Q48SG Quarter Brick Family Full Digital Control DC/DC Power Modules

THERMAL CURVES
(WITH HEAT SPREADER)
AIRFLOW
THERMAL CURVES
(WITH 0.5” HEAT SINK)
AIRFLOW
20.8mm
(0.82")
Figure 22: * Hot spot temperature measured point. the
allowed maximum hot spot temperature is defined at 103℃
Q48SG12042(Standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current (A)
@Vin = 48V (Transverse Orientation,With Heat Spreader)
40
600LFM
35
30
Natural
25 _Convection
20
100LFM
200LFM
15
300LFM
10
400LFM
500LFM
5
0
25
30
35
40
45
50
55
60
65
70
75
Ambien
t
80
Temperature
(8℃⁵ )
Figure 23: Output current vs. ambient temperature and air
velocity @Vin=48V(Transverse Orientation, airflow from Vin+ to
Vin-, with heat spreader)
20.8mm
(0.82")
Figure 24: * Hot spot temperature measured point. the
allowed maximum hot spot temperature is defined at 100℃
Q48SG12042(Standard) Output Current vs. Ambient Temperature and Air Velocity
Output Current (A)
@Vin = 48V (Transverse Orientation,With 0.5" Height Heat Sink)
40
600LFM
35
30
Natural
Convection
25
100LFM
20
200LFM
15
300LFM
10
400LFM
5
500LFM
0
25
30
35
40
45
50
55
60
65
70
75
Ambient
80
Temperature
(8℃⁵ )
Figure 25: Output current vs. ambient temperature and air velocity
@Vin=48V(Transverse Orientation, airflow from Vin+ to Vin-, with
0.5” height heat sink)
22
DS_Q48SG12042_08062013