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參數(shù)資料
| 型號(hào)： | FW300A1-A |
| 廠商： | LINEAGE POWER LLC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 300 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | MODULE-20 |
| 文件頁(yè)數(shù)： | 20/20頁(yè) |
| 文件大?。?/td> | 796K |
| 代理商： | FW300A1-A |
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Lineage Power
9
Data Sheet
April 2008
36 Vdc to 75 Vdc Input, 5 Vdc Output; 300 W
FW300A1-A Power Module; dc-dc Converter:
Feature Descriptions (continued)
Output Voltage Set-Point Adjustment (Trim)
(continued)
With an external resistor between the TRIM and
SENSE(–) pins (Radj-down), the output voltage set point
tion determines the required external-resistor value to
obtain a percentage output voltage change of
%.
With an external resistor connected between the TRIM
and SENSE(+) pins (Radj-up), the output voltage set
The following equation determines the required exter-
nal-resistor value to obtain a percentage output voltage
change of
%.
The voltage between the VO(+) and VO(–) terminals
must not exceed the minimum value of the output over-
voltage protection as indicated in the Feature Speci-
cations table. This limit includes any increase in voltage
due to remote-sense compensation and output voltage
set-point adjustment (trim). See Figure 12.
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
dened 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.
8-748 (C).b
Figure 13. Circuit Conguration to Decrease
Output Voltage
8-715 (C).b
Figure 14. Circuit Conguration to Increase
Output Voltage
Output Overvoltage Protection
The output voltage is monitored at the VO(+) and VO(–)
pins of the module. If the voltage at these pins exceeds
the value indicated in the Feature Specications table,
the module will shut down and latch off. Recovery from
latched shutdown is accomplished by cycling the dc
input power off for at least 1.0 second or toggling the
primary referenced on/off signal for at least 1.0 second.
Overtemperature Protection
To provide protection in a fault condition, the unit is
equipped with an overtemperature shutdown circuit.
The shutdown circuit will not engage unless the unit is
operated above the maximum case temperature.
Recovery from overtemperature shutdown is
accomplished by cycling the dc input power off for at
least 1.0 second or toggling the primary referenced
on/off signal for at least 1.0 second.
Radj-down
205
%
----------
2.255
–
k
=
Radj-up
VO, nom 1
%
100
---------
+
1.225
–
1.225
%
()
-----------------------------------------------------------------205
2.255
–
k
=
VI(+)
VI(–)
ON/OFF
CASE
VO(+)
VO(–)
SENSE(+)
TRIM
SENSE(–)
Radj-down
RLOAD
VI(+)
VI(–)
ON/OFF
CASE
VO(+)
VO(–)
SENSE(+)
TRIM
SENSE(–)
Radj-up
RLOAD
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