FW300R1 Lineage Power, FW300R1 Datasheet - Page 13

• Manufacturer Part Number: FW300R1
• Description: CONVERTER DC/DC 28V 300W OUT
• Manufacturer: Lineage Power
• Series: FW300r
• Type: Isolated with Remote On/Offr

Specifications of FW300R1

• Output: 28V
• Number Of Outputs: 1
• Power (watts): 300W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: Module
• 1st Output: 28 VDC @ 10.7A
• 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: 90.5%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -

Data Sheet
March 2000
Thermal Considerations
Introduction
The power modules operate in a variety of thermal
environments; however, sufficient cooling should be
provided to help ensure reliable operation of the unit.
Heat-dissipating components inside the unit are ther-
mally coupled to the case. Heat is removed by conduc-
tion, convection, and radiation to the surrounding
environment. Proper cooling can be verified by mea-
suring the case temperature. Peak temperature occurs
at the position indicated in Figure 18.
Note: Top view, measurements shown in millimeters and (inches).
Figure 18. Case Temperature Measurement
The temperature at this location should not exceed
100 °C. The maximum case temperature can be limited
to a lower value for extremely high reliability. The output
power of the module should not exceed the rated power
for the module as listed in the Ordering Information table.
For additional information about these modules, refer to
the Thermal Management for FC- and FW-Series 250
W—300 W Board-Mounted Power Modules Technical
Note (TN96-009EPS).
Heat Transfer Without Heat Sinks
Derating curves for forced-air cooling without a heat
sink are shown in Figures 19 and 20. 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.).
Tyco Electronics Corp..
(1.20)
30.5
Pin locations are for reference only.
V
V
ON/OFF
SYNC IN
SYNC OUT
CASE
I
I
(+)
(–)
Location
TEMPERATURE HERE
(3.25)
82.6
MEASURE CASE
FW250R1 and FW300R1 Power Modules: dc-dc Converters:
36 Vdc to 75 Vdc Input, 28 Vdc Output; 250 W to 300 W
V
V
O
O
8-1303 (C).a
(+)
(–)
Figure 19. Convection Power Derating with No Heat
Figure 20. Convection Power Derating with No Heat
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
50
50
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)
90
8-1314 (C)
100
100
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