JC100H1 Lineage Power, JC100H1 Datasheet - Page 12

• Manufacturer Part Number: JC100H1
• Manufacturer: Lineage Power

dc-dc Converters; 18 to 36 Vdc Input, 24 Vdc Output; 50 W to 100 W
Thermal Considerations
Heat Transfer Without Heat Sinks
Figure 22. JC050H Power Dissipation vs.
Figure 23. JC075H Power Dissipation vs.
12
12
12
10
4
2
8
6
0
0
14
12
10
8
6
4
2
0
0
0.2 0.4 0.6 0.8
Output Current
Output Current
0.5
OUTPUT CURRENT, I
OUTPUT CURRENT, I
V
V
V
V
V
V
I
I
I
I
I
I
1
= 36 V
= 28 V
= 18 V
= 28 V
= 18 V
= 36 V
1.5
1
(continued)
1.2 1.4
O
2
(A)
O
(A)
2.5
(continued)
1.6
8-11182 (C).a
8-1182 (C).b
1.8
3
2
Figure 24. JC100H Power Dissipation vs.
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.).
Thermal derating with heat sinks is expressed by using
the overall thermal resistance of the module. Total
module thermal resistance (θca) is defined as the max-
imum case temperature rise (ΔT
module power dissipation (P
The location to measure case temperature (T
shown in Title 20. Case-to-ambient thermal resistance
vs. airflow is shown, for various heat sink configura-
tions and heights, in Title 25. These curves were
obtained by experimental testing of heat sinks, which
are offered in the product catalog.
θ
20
18
16
14
12
10
8
6
4
2
0
ca
0
=
0.5
Output Current
ΔT
-------------------- -
P
C max
,
D
1
OUTPUT CURRENT, I
V
V
V
1.5
I
I
I
=
= 28 V
= 18 V
= 36 V
(
----------------------- -
T
D
2
C
):
P
–
D
C, max
T
2.5
A
)
O
) divided by the
(A)
3
Lineage Power
March 2008
3.5
C
) is
8-1188 (C).a
4