FW300R1 Lineage Power, FW300R1 Datasheet - Page 10

• 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: -

FW250R1 and FW300R1 Power Modules: dc-dc Converters:
36 Vdc to 75 Vdc Input, 28 Vdc Output; 250 W to 300 W
Feature Descriptions
Output Voltage Set-Point Adjustment (Trim)
(continued)
With an external resistor between the TRIM and
SENSE(–) pins (R
(V
tion determines the required external-resistor value to
obtain a percentage output voltage change of %.
The test results for this configuration are displayed in
Figure 14. This figure applies to all output voltages.
With an external resistor connected between the TRIM
and SENSE(+) pins (R
point (V
Note: The output voltage of this module may be
The following equation determines the required exter-
nal-resistor value to obtain a percentage output voltage
change of %.
Only trim up to 0.5 V maximum. See note above.
The test results for this configuration are displayed in
Figure 16.
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.
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.
10
10
O, adj
R
adj-down
) decreases (see Figure 13). The following equa-
increased to a maximum of 0.5 V. The 0.5 V is
the combination of both the remote sense and
the output voltage set-point adjustment (trim).
Do not exceed 28.5 V between the V
V
O, adj
O
(–) terminals.
) increases (see Figure 15).
=
205
--------- - 2.255
adj-down
%
–
adj-up
), the output voltage set point
), the output voltage set
(continued)
k
O
(+) and
Figure 13. Circuit Configuration to Decrease
Figure 14. Resistor Selection for Decreased Output
Figure 15. Circuit Configuration to Increase
100k
10k
1M
V
ON/OFF
CASE
V
V
ON/OFF
CASE
V
1k
I
I
I
I
(+)
(–)
(+)
(–)
0
Output Voltage
Voltage
Output Voltage
PERCENT CHANGE IN OUTPUT VOLTAGE ( %)
SENSE(+)
SENSE(+)
SENSE(–)
SENSE(–)
10
V
TRIM
V
TRIM
V
V
O
O
O
O
(+)
(+)
(–)
(–)
20
Tyco Electronics Corp..
R
R
adj-down
adj-up
March 2000
Data Sheet
30
R
R
LOAD
LOAD
8-1171 (C).g
8-748 (C).b
8-715 (C).b
40