FW300A1 Lineage Power, FW300A1 Datasheet - Page 16

• Manufacturer Part Number: FW300A1
• Description: CONVERTER DC/DC 5V 300W OUT
• Manufacturer: Lineage Power
• Series: FW300r
• Type: Isolated with Remote On/Offr

Specifications of FW300A1

• Output: 5V
• Number Of Outputs: 1
• Power (watts): 300W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: Module
• 1st Output: 5 VDC @ 60A
• Size / Dimension: 4.60" L x 2.40" W x 0.53" H (116.8mm x 61mm x 13.5mm)
• Power (watts) - Rated: 300W
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 84%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -

dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 250 W to 300 W
FW250A1 and FW300A1 Power Modules:
Thermal Considerations
Heat Transfer with Heat Sinks
Figure 28. Case-to-Ambient Thermal Resistance
These measured resistances are from heat transfer
from the sides and bottom of the module as well as the
top side with the attached heat sink; therefore, the
case-to-ambient thermal resistances shown are gener-
ally lower than the resistance of the heat sink by itself.
The module used to collect the data in Figures 27 and
28 had a thermal-conductive dry pad between the case
and the heat sink to minimize contact resistance.
To choose a heat sink, determine the power dissipated
as heat by the unit for the particular application.
Figures 29 and 30 show typical heat dissipation for a
range of output currents and three voltages for the
FW250A1 and FW300A1.
16
16
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
Curves; Longitudinal Orientation
(100)
0.5
AIR VELOCITY, m/s (ft./min.)
(200)
1.0
(300)
1.5
(continued)
1 1/2 IN. HEAT SINK
1 IN. HEAT SINK
1/2 IN. HEAT SINK
1/4 IN. HEAT SINK
NO HEAT SINK
(400)
2.0
(continued)
(500)
2.5
8-1320 (C)
(600)
3.0
Figure 29. FW250A1 Power Dissipation vs. Output
Figure 30. FW300A1 Power Dissipation vs. Output
50
45
40
35
30
25
20
15
10
70
60
50
40
30
20
10
5
0
0
0
0
V
4
I
Current at 25 °C
Current at 25 °C
= 72 V
V
V
V
I
I
I
8
10
= 72 V
= 54 V
= 36 V
12
OUTPUT CURRENT, I
OUTPUT CURRENT, I
16 20
V
20
I
= 54 V
V
24
I
30
= 36 V
28 32 36
40
O
O
(A)
(A)
Data Sheet
April 2008
40
50
Lineage Power
44
8-1758 (C)
8-1759 (C)
48
60