PAQ50S48-1R8 TDK Corporation, PAQ50S48-1R8 Datasheet - Page 19

• Manufacturer Part Number: PAQ50S48-1R8
• Description: LAMBDA PART
• Manufacturer: TDK Corporation

Specifications of PAQ50S48-1R8

• Rohs Compliant: YES

（1）Output Derating by ambient temperature
・All specifications are subject to change without notice.
PAQ
1 Output derating
There is no restriction on mounting direction but there
should be enough consideration for airflow so that heat
does not accumulate around the power module vicinity.
Determine external components configuration and mount-
ing direction on PCB such that air could flow through
power module at forced air cooling or convection cooling.
Take note, output power derating is needed as shown in
followings. (Refer to output derating by ambient tempera-
ture).
The derating curves provided is based on the below set-up
condition. For actual application with difficulty of air flow
measurement, find of PCB temperature is recommended to
ensure the power module operates within derating curve.
(Refer to Output derating by PCB temperature)
PAQ100S48 Vin=48VDC
PAQ100S48-1R2 (including /V option)
PAQ100S48-1R8 (including /V option)
100
100
-S48
80
60
40
20
80
60
40
20
0
0
−40
−40
3. Mounting Method and Thermal Condition
Top view
Airflow
−20
−20
Air Velocity
Air Velocity
C L
Natural convection cooling
1m/s
2m/s
Natural convection cooling
1m/s
2m/s
Ambient Temperature (℃)
Ambient Temperature (℃)
0
0
Power
Module
Ta and air
velocity
measurement
point
Fig.1-3
Fig.1-1
Fig.1-2
20
20
40
40
12.7mm
25.4mm
Airflow
PCB
60
60
80
80
PCB
Power
Module
100
100
PAQ100S48-2R5 (including /V option)
PAQ100S48-3R3 (including /V option)
PAQ100S48-5 (including /V option)
PAQ50S48 Vin=48VDC
PAQ50S48-1R2 (including /V option)
100
100
100
100
80
60
40
20
80
60
40
20
80
60
40
20
80
60
40
20
0
0
0
−40
−40
−40
0
−40
−20
−20
−20
−20
Air Velocity
Air Velocity
Air Velocity
Air Velocity
Natural convection cooling
1m/s
2m/s
Natural convection cooling
1m/s
2m/s
Natural convection cooling
1m/s
2m/s
Natural convection cooling
1m/s
2m/s
Ambient Temperature (℃)
Ambient Temperature (℃)
Ambient Temperature (℃)
Ambient Temperature (℃)
0
0
0
0
Fig.1-4
Fig.1-5
Fig.1-6
Fig.1-7
20
20
20
20
40
40
40
40
60
60
60
60
80
80
80
80
100
100
100
100
B-243
PAQ