FC250A1 Lineage Power, FC250A1 Datasheet - Page 9

• Manufacturer Part Number: FC250A1
• Description: CONVERTER DC/DC 2.5V 100W OUT
• Manufacturer: Lineage Power
• Series: FC250r
• Type: Isolated with Remote On/Offr

Specifications of FC250A1

• Output: 2.5V
• Number Of Outputs: 1
• Power (watts): 50W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: Module
• 1st Output: 2.5 VDC @ 40A
• Size / Dimension: 2.40" L x 2.28" W x 0.50" H (61mm x 57.9mm x 12.7mm)
• Power (watts) - Rated: 100W
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 85%
• Approvals: CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -

July 1998
Feature Descriptions
Output Voltage Set-Point Adjustment
(Trim)
Figure 12. Circuit Configuration to Increase
Remote Sense
Remote sense minimizes the effects of distribution
losses by regulating the voltage at the remote-sense
connections. The voltage between the remote-sense
pins and the output terminals must not exceed the out-
put voltage sense range given in the Feature Specifica-
tions table, i.e.:
The voltage between the V
must not exceed the minimum output overvoltage shut-
down voltage as indicated in the Feature Specifications
table. This limit includes any increase in voltage due to
remote-sense compensation and output voltage set-
point adjustment (trim). See Figure 13.
If not using the remote-sense feature to regulate the
output at the point of load, then connect SENSE(+) to
V
Although the output voltage can be increased by both
the remote sense and by the trim, the maximum
increase for the output voltage is not the sum of both.
The maximum increase is the larger of either the
remote sense or the trim. Consult the factory if you
need to increase the output voltage more than the
above limitation.
Tyco Electronics Corp.
O
(+) and SENSE(–) to V
[V
O
(+) – V
V
ON/OFF
CASE
V
I
I
(+)
(–)
(continued)
Output Voltage
O
(–)] – [SENSE(+) – SENSE(–)]
SENSE(+)
SENSE(–)
V
TRIM
V
O
O
(+)
(–)
O
O
(–) at the module.
(+) and V
(continued)
R
adj-up
O
(–) terminals
R
LOAD
0.5 V
8-715 (F).b
18 Vdc to 36 Vdc Input, 5 Vdc Output; 50 W
The amount of power delivered by the module is
defined as the voltage at the output terminals multiplied
by the output current. When using remote-sense and
trim, the output voltage of the module can be
increased, which at the same output current would
increase the power output of the module. Care should
be taken to ensure that the maximum output power of
the module remains at or below the maximum rated
power.
Figure 13. Effective Circuit Configuration for
Output Overvoltage Protection
The output overvoltage protection consists of circuitry
that monitors the voltage on the output terminals. If the
voltage on the output terminals exceeds the overvolt-
age protection threshold, then the module will shut
down and attempt to restart.
Overtemperature Protection
To provide protection in a fault condition, the unit is
equipped with an overtemperature protection circuit.
This circuit will not engage unless the case tempera-
ture exceeds the maximum limit. When activated, the
overtemperature protection circuit temporarily shuts
down the unit. Recovery from the overtemperature pro-
tection is automatic after the unit cools below the over-
temperature protection threshold.
SUPPLY
RESISTANCE
CONTACT
Single-Module Remote-Sense Operation
I
I
V
V
I
I
(+)
(–)
SENSE(+)
SENSE(–)
V
V
O
O
(+)
(–)
DISTRIBUTION LOSSES
I
O
CONTACT AND
LOAD
8-651 (F).m
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