PAQ
B-248
・All specifications are subject to change without notice.
2 Output derating against ambient
temperature (reference value)
Following the previous design example, output derating against
ambient temperature can be determined by the following condi-
tions as shown in Fig.1-9 to 1-13. These value are for reference
only. Be sure to verify baseplate temperature is within output
derating as shown in Fig.1-1.for actual design-in
Input Voltage：
48V
Output Voltage： Nominal value
Cooling Method： Convection cooling or
forced air cooling (1m/s, 2m/s)
Mounting Method：Standard vertical mounting
At this case, convection cooling means 0.2m/s air flows by
power module heating itself.
At vertical mounting Vin =48VDC
100
80
60
40
20
0
−40
−20
0
20
40
60
80
100
Air Velocity
Natural convection cooling
1m/s
2m/s
Load (％)
Ambient Temperature (℃)
Fig.1-9 PAQ100S48-1R2/B
Output Derating at Ambient Temperature
(Vin=48V: reference value)
100
80
60
40
20
0
−40
−20
0
20
40
60
80
100
Air Velocity
Natural convection cooling
1m/s
2m/s
Load (％)
Ambient Temperature (℃)
Fig.1-11 PAQ100S48-2R5/B
Output Derating at Ambient Temperature
(Vin=48V: reference value)
100
80
60
40
20
0
−40
−20
0
20
40
60
80
100
Air Velocity
Natural convection cooling
1m/s
2m/s
Load (％)
Ambient Temperature (℃)
Fig.1-13 PAQ100S48-5/B
Output Derating at Ambient Temperature
(Vin=48V: reference value)
100
80
60
40
20
0
−40
−20
0
20
40
60
80
100
Air Velocity
Natural convection cooling
1m/s
2m/s
Load (％)
Ambient Temperature (℃)
Fig.1-10 PAQ100S48-1R8/B
Output Derating at Ambient Temperature
(Vin=48V: reference value)
100
80
60
40
20
0
−40
−20
0
20
40
60
80
100
Air Velocity
Natural convection cooling
1m/s
2m/s
Load (％)
Ambient Temperature (℃)
Fig.1-12 PAQ100S48-3R3/B
Output Derating at Ambient Temperature
(Vin=48V: reference value)
PAQ
100S48-*/B
Summary of Contents for PAQ100S48-1R2
Page 36: ...B 260...
