FW300A1 Lineage Power, FW300A1 Datasheet - Page 11

• 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: -

Data Sheet
April 2008
Feature Descriptions
Remote Sense
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.
Figure 18. Effective Circuit Configuration for
Output Voltage Set-Point Adjustment (Trim)
Output voltage trim allows the user to increase or
decrease the output voltage set point of a module. This
is accomplished by connecting an external resistor
between the TRIM pin and either the SENSE(+) or
SENSE(–) pins. The trim resistor should be positioned
close to the module.
If not using the trim feature, leave the TRIM pin open.
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 %.
Lineage Power
O, adj
SUPPLY
RESISTANCE
R
CONTACT
adj-down
) decreases (see Figure 19). The following equa-
Single-Module Remote-Sense Operation
I
I
=
205
--------- - 2.255
adj-down
%
V
V
(continued)
I
I
(+)
(–)
–
SENSE(+)
SENSE(–)
), the output voltage set point
V
V
O
O
(+)
(–)
(continued)
k
DISTRIBUTION LOSSES
dc-dc Converters; 36 to 75 Vdc Input, 5 Vdc Output; 250 W to 300 W
I
O
CONTACT AND
LOAD
8-651 (C).e
The test results for this configuration are displayed in
Figure 20. This figure applies to all output voltages.
With an external resistor connected between the TRIM
and SENSE(+) pins (R
point (V
The following equation determines the required exter-
nal-resistor value to obtain a percentage output voltage
change of %.
The test results for this configuration are displayed in
Figure 22.
The voltage between the V
must not exceed the minimum value of the output over-
voltage protection as indicated in the Feature Specifi-
cations table. This limit includes any increase in voltage
due to remote-sense compensation and output voltage
set-point adjustment (trim). See Figure 18.
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.
Figure 19. Circuit Configuration to Decrease
R
adj-up
FW250A1 and FW300A1 Power Modules:
V
ON/OFF
CASE
V
=
I
I
(+)
(–)
O, adj
------------------------------------------------------------------------- 205
V
) increases (see Figure 21).
Output Voltage
O, nom
SENSE(+)
SENSE(–)
V
TRIM
V
1
1.225 %
O
O
(+)
(–)
+
adj-up
--------- -
100
%
O
), the output voltage set
(+) and V
–
1.225
R
adj-down
O
(–) terminals
–
2.255
R
LOAD
8-748 (C).b
11
k