JW050F, JW075F, JW100F, JW150F Power Modules:
dc-dc Converters; 36 to 75 Vdc Input, 3.3 Vdc Output; 33 W to 99 W
Data Sheet
April 2008
Thermal Considerations (continued)
30
Heat Transfer Without Heat Sinks (continued)
25
20
16
14
15
12
10
8
10
5
V
V
V
I
= 36 V
= 54 V
= 7356 V
I
I
V
V
V
I
I
= 36 V
= 54 V
= 7356 V
0
6
0
5
10
15
20
(A)
25
30
I
4
OUTPUT CURRENT, I
O
2
0
8-1462 (C)
Figure 30. JW150F Power Dissipation vs.
Output Current
0
2
4
6
8
10
(A)
12
14
OUTPUT CURRENT, I
O
8-1460 (C)
Figure 28. JW075F Power Dissipation vs.
Output Current
35
4.0 m/s (800 ft./min.)
3.5 m/s (700 ft./min.)
3.0 m/s (600 ft./min.)
30
2.5 m/s (500 ft./min.)
2.0 m/s (400 ft./min.)
1.5 m/s (300 ft./min.)
1.0 m/s (200 ft./min.)
0.5 m/s (100 ft./min.)
25
20
15
10
17
16
15
14
13
12
11
10
9
8
V
V
V
I
I
= 36 V
= 54 V
= 7356 V
5
0
0.1 m/s (NAT. CONV.)
(20 ft./min.)
7
6
5
4
3
2
1
0
I
0
10
20
30
40
50
60
70
80
(°C)
90 100
LOCAL AMBIENT TEMPERATURE, T
A
8-1150 (C).a
0
2
4
6
8
10
12
14
16
18 20
Figure 31. Forced Convection Power Derating with
No Heat Sink; Either Orientation
OUTPUT CURRENT, I
O
(A)
8-1461 (C)
Figure 29. JW100F Power Dissipation vs.
Output Current
Heat Transfer with Heat Sinks
The power modules have through-threaded, M3 x 0.5
mounting holes, which enable heat sinks or cold plates
to attach to the module. The mounting torque must not
exceed 0.56 N-m (5 in.-lb.). For a screw attachment
from the pin side, the recommended hole size on the
customer’s PWB around the mounting holes is
0.130 ± 0.005 inches. If a larger hole is used, the
mounting torque from the pin side must not exceed
0.25 N-m (2.2 in.-lb.).
14
Lineage Power
LINEAGEPOWER [ LINEAGE POWER CORPORATION ]
