FW300A1 Lineage Power, FW300A1 Datasheet - Page 14

• 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:
Feature Descriptions
Forced Load Sharing (Parallel Operation)
(continued)
Figure 23. Wiring Configuration for Redundant
Power Good Signal
The PWR GOOD pin provides an open-drain signal
(referenced to the SENSE(–) pin) that indicates the
operating state of the module. A low impedance
(<100 ) between PWR GOOD and SENSE(–) indi-
cates that the module is operating. A high impedance
(>1 M ) between PWR GOOD and SENSE(–) indi-
cates that the module is off or has failed. The PWR
GOOD pin can be pulled up through a resistor to an
external voltage to facilitate sensing. This external volt-
age level must not exceed 40 V, and the current into the
PWR GOOD pin during the low-impedance state
should be limited to 1 mA maximum.
14
14
Parallel Operation
CASE
ON/OFF
V
V
CASE
ON/OFF
V
V
I
I
I
I
(+)
(–)
(+)
(–)
PARALLEL
PARALLEL
SENSE(+)
SENSE(–)
SENSE(+)
SENSE(–)
V
V
V
V
O
O
O
O
(+)
(+)
(–)
(–)
(continued)
8-581 (C)
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 24.
Note: Top view, measurements shown in millimeters and (inches).
Figure 24. 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 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.).
(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
Lineage Power
Data Sheet
April 2008
V
V
O
O
8-1303 (C).a
(+)
(–)