FW300F1 Lineage Power, FW300F1 Datasheet - Page 15

• Manufacturer Part Number: FW300F1
• Description: CONVERTER DC/DC 3.3V 198W OUT
• Manufacturer: Lineage Power
• Series: FW300r
• Type: Isolated with Remote On/Offr

Specifications of FW300F1

• Output: 3.3V
• Number Of Outputs: 1
• Power (watts): 198W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: Module
• 1st Output: 3.3 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: 198W
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 79%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -

Thermal Considerations
Heat Transfer Without Heat Sinks
Derating curves for forced-air cooling without a heat
sink are shown in Figures 25 and 26. These curves can
be used to determine the appropriate airflow for a given
set of operating conditions. For example, if the unit with
airflow along its length dissipates 20 W of heat, the
correct airflow in a 40 °C environment is 1.0 m/s
(200 ft./min.).
Figure 25. Convection Power Derating with No Heat
Figure 26. Convection Power Derating with No Heat
Tyco Electronics Corp..
July 2002
70
60
50
40
30
20
10
70
60
50
40
30
20
10
0
0
0
0
0.1 m/s (20 ft. /min.) NAT . CO NV.
0. 1 m/ s (20 ft./min.) NA T. CONV.
10
Sink; Airflow Along Width (Transverse)
10
Sink; Airflow Along Length
(Longitudinal)
LOCAL AMBIENT T EMPERATURE, T
LOCAL AMBIENT T EMPERAT URE, T
20
20
30
30
dc-dc Converters; 36 to 75 Vdc Input, 3.3 Vdc Output; 165 W to 198 W
40
40
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
A
A
80
80
(¡C)
(¡C)
90
8-1315 (C)
8-1314 (C)
90
1 00
1 00
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.-lbs.).
Thermal derating with heat sinks is expressed by using
the overall thermal resistance of the module. Total
module thermal resistance ( ca) is defined as the max-
imum case temperature rise ( T
module 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
ca
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
=
Curves; Transverse Orientation
-------------------- -
(100)
0.5
T
P
C max
,
D
AIR VELOCITY, m/s (ft./min.)
(200)
1.0
=
----------------------- -
T
D
(300)
C
1.5
):
P
–
D
C, max
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
) divided by the
(500)
2.5
C
) is
8-1321 (C)
(600)
3.0
15