FW300A1 Lineage Power, FW300A1 Datasheet - Page 15

• 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: -

Data Sheet
April 2008
Thermal Considerations
Heat Transfer Without Heat Sinks
Figure 25. Convection Power Derating with No Heat
Figure 26. Convection Power Derating with No Heat
Lineage Power
70
60
50
40
30
20
10
70
60
50
40
30
20
10
0
0
0
0
10
10
Sink; Airflow Along Width; Transverse
Orientation
Sink; Airflow Along Length;
Longitudinal Orientation
0.1 m/s (20 ft./min.)
0.1 m/s (20 ft./min.)
LOCAL AMBIENT TEMPERATURE, T
LOCAL AMBIENT TEMPERATURE, T
20
20
NAT. CONV.
NAT. CONV.
30
30
40
40
dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 250 W to 300 W
50
50
(continued)
60
60
4.0 m/s (800 ft./min.)
3.5 m/s (700 ft./min.)
3.0 m/s (600 ft./min.)
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.)
4.0 m/s (800 ft./min.)
3.5 m/s (700 ft./min.)
3.0 m/s (600 ft./min.)
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.)
70
70
(continued)
A
A
80
80
( C)
( C)
90
8-1315 (C)
90
8-1314 (C)
100
100
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 be attached to the module. The mounting torque
must not exceed 0.56 N-m (5 in.-lb.). For the 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.).
Thermal derating with heat sinks is expressed by using
the overall thermal resistance of the module. Total mod-
ule thermal resistance ( ca) is defined as the maximum
case temperature rise ( T
power dissipation (P
The location to measure case temperature (T
shown in Figure 24. Case-to-ambient thermal resis-
tance vs. airflow for various heat sink configurations is
shown in Figure 27 and Figure 28. These curves were
obtained by experimental testing of heat sinks, which
are offered in the product catalog.
Figure 27. Case-to-Ambient Thermal Resistance
FW250A1 and FW300A1 Power Modules:
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
ca
0
=
Curves; Transverse Orientation
-------------------- -
(100)
0.5
T
P
C max
,
D
AIR VELOCITY, m/s (ft./min.)
D
(200)
):
1.0
=
C, max
----------------------- -
T
(300)
C
1.5
P
–
) divided by the module
D
T
A
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
(500)
2.5
C
) is
8-1321 (C)
(600)
3.0
15