FW300H1 Lineage Power, FW300H1 Datasheet - Page 13

• Manufacturer Part Number: FW300H1
• Description: CONVERTER DC/DC 24V 300W OUT
• Manufacturer: Lineage Power
• Series: FW300r
• Type: Isolated with Remote On/Offr

Specifications of FW300H1

• Output: 24V
• Number Of Outputs: 1
• Power (watts): 300W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: Module
• 1st Output: 24 VDC @ 12.5A
• 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: 89%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -

Feature Descriptions
Forced Load Sharing (Parallel Operation)
(continued)
When not using the parallel feature, leave the
PARALLEL pin open.
Figure 19. Wiring Configuration for Redundant
The parallel pins of all units must be connected
together. The paths of these connections should be
as direct as possible.
All remote-sense pins should be connected to the
power bus at the same point, i.e., connect all
SENSE(+) pins to the (+) side of the power bus at the
same point and all SENSE(–) pins to the (–) side of
the power bus at the same point. Close proximity and
directness are necessary for good noise immunity.
Tyco Electronics Corp.
Data Sheet
September 2001
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)
FW250H1 and FW300H1 Power Modules; dc-dc Converters:
8-581
36 Vdc to 75 Vdc Input, 24 Vdc Output; 250 W to 300 W
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.
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 20.
Note: Top view, measurements shown in millimeters and (inches).
Figure 20. Case Temperature Measurement
(1.20)
30.5
Pin locations are for reference only.
V
V
ON/OFF
SYNC IN
SYNC OUT
CASE
I
I
(+)
(–)
Location
(3.25)
82.6
TEMPERATURE HERE
MEASURE CASE
V
V
O
O
(+)
(–)
8-1303
13