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參數(shù)資料
| 型號(hào)： | FW300C1 |
| 元件分類： | 電源模塊 |
| 英文描述： | 1-OUTPUT 300 W DC-DC REG PWR SUPPLY MODULE |
| 文件頁數(shù)： | 2/20頁 |
| 文件大小： | 646K |
| 代理商： | FW300C1 |
10
Tyco Electronics Corp.
Data Sheet
August 2000
dc-dc Converters; 36 to 75 Vdc Input, 15 Vdc Output; 250 W to 300 W
FW250C1 and FW300C1 Power Modules:
Feature Descriptions (continued)
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 (Radj-down), the output voltage set point
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 (Radj-up), the output voltage set
Note: The output voltage of this module may be
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 15.5 V between the VO(+) and
VO(–) terminals.
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. For applications requiring voltage between
15 V and 24 V, consider using the FW250H1 trimmed
down.
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.
8-748 (F).b
Figure 13. Circuit Configuration to Decrease
Output Voltage
8-1171 (F).g
Figure 14. Resistor Selection for Decreased Output
Voltage
Radj-down
205
%
----------2.255
–
k
=
Radj-up
VO 100
%
+
()
1.225
%
---------------------------------------
100
2
%
+
()
%
----------------------------------
–
=
k
VI(+)
VI(–)
ON/OFF
CASE
VO(+)
VO(–)
SENSE(+)
TRIM
SENSE(–)
Radj-down
RLOAD
AD
J
U
ST
ME
N
T
R
E
SI
ST
O
R
V
A
LU
E
(
)
% CHANGE IN OUTPUT VOLTAGE (
%)
1M
100k
10k
1k
0
102030
40
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