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參數(shù)資料
| 型號： | FW300F1 |
| 廠商： | LINEAGE POWER LLC |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 198 W DC-DC REG PWR SUPPLY MODULE |
| 封裝： | MODULE-20 |
| 文件頁數(shù)： | 3/20頁 |
| 文件大?。?/td> | 434K |
| 代理商： | FW300F1 |
Lineage Power
11
Data Sheet
April 2008
dc-dc Converters; 36 to 75 Vdc Input, 3.3 Vdc Output; 165 W to 198 W
FW250F1 and FW300F1 Power Modules:
Feature Descriptions (continued)
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.:
[VO(+) – VO(–)] – [SENSE(+) – SENSE(–)]
≤ 0.5 V
The voltage between the VO(+) and VO(–) terminals
must not exceed the minimum value indicated in the
output overvoltage shutdown section of 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 18.
If not using the remote-sense feature to regulate the out-
put at the point of load, connect SENSE(+) to VO(+) and
SENSE(–) to VO(–) at the module.
8-651
Figure 18. Effective Circuit Configuration for
Single-Module Remote-Sense Operation
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. With an external resistor between the
TRIM and SENSE(–) pins (Radj-down), the output voltage
lowing equation determines the required external-resis-
tor value to obtain a percentage output voltage change
of
Δ%.
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 (Radj-up), the output voltage set
The following equation determines the required exter-
nal-resistor value to obtain a percentage output voltage
change of
Δ%.
The test results for this configuration are displayed in
Figure 22.
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 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.
If not using the trim feature, leave the TRIM pin open.
8-748 (C).b
Figure 19. Circuit Configuration to Decrease
Output Voltage
VO(–)
SENSE(+)
SENSE(–)
VO(+)
VI(–)
VI(+)
IO
LOAD
CONTACT AND
DISTRIBUTION LOSSES
SUPPLY
II
CONTACT
RESISTANCE
Radj-down
205
Δ%
----------2.255
–
k
Ω
=
Radj-up
VO, nom 1
Δ%
100
----------
+
() 1.225
–
()
1.225
Δ%
()
-------------------------------------------------------------------------205
2.255
–
k
Ω
=
VI(+)
VI(–)
ON/OFF
CASE
VO(+)
VO(–)
SENSE(+)
TRIM
SENSE(–)
Radj-down
RLOAD
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