- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄370165 > FC250R Power Module:dc-dc Converter; 18 Vdc to 36 Vdc Input, 28 Vdc Output; 250 W PDF資料下載
參數(shù)資料
| 型號： | FC250R |
| 元件分類： | DC/DC變換器 |
| 英文描述： | Power Module:dc-dc Converter; 18 Vdc to 36 Vdc Input, 28 Vdc Output; 250 W |
| 中文描述： | 電源模塊：型DC - DC轉(zhuǎn)換器，18伏到36伏直流電輸入，28伏直流輸出; 250瓦 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 1145K |
| 代理商： | FC250R |
8
Tyco Electronics Corp.
Data Sheet
May 1999
dc-dc Converter; 18 Vdc to 36 Vdc Input, 28 Vdc Output; 250 W
FC250R Power Module:
Feature Descriptions
(continued)
Remote On/Off
To turn the power module on and off, the user must
supply a switch to control the voltage between the on/off
terminal and the V
I
(–) terminal (V
an open collector or equivalent (see Figure 11). A logic
low is V
on/off
= 0 V to 1.2 V, during which the module is on.
The maximum I
on/off
during a logic low is 1 mA. The switch
should maintain a logic-low voltage while sinking 1 mA.
on/off
). The switch can be
During a logic high, the maximum V
the power module is 15 V. The maximum allowable
leakage current of the switch at V
on/off
generated by
on/off
= 15 V is 50 μA.
If not using the remote on/off feature, short the
ON/OFF pin to V
I
(–).
8-580 (C).d
Figure 11. Remote On/Off Implementation
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.:
[V
O
(+) – V
O
Figure 14. This figure applies to all output voltages.
(–)] – [SENSE(+) – SENSE(–)]
≤
0.5 V
The voltage between the V
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 12.
O
(+) and V
O
(–) terminals
If not using the remote-sense feature to regulate the out-
put at the point of load, connect SENSE(+) to V
SENSE(–) to V
O
(–) at the module.
O
(+) and
Figure 12. 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. The TRIM resistor should be posi-
tioned 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
adj-down
(V
O
,
adj
) decreases (see Figure 13). The following equa-
tion determines the required external-resistor value to
obtain a percentage output voltage change of
205
), the output voltage set point
%.
The test results for this configuration are displayed in
With an external resistor connected between the TRIM
and SENSE(+) pins (R
adj-up
), the output voltage set
point (V
O
,
adj
) increases (see Figure 15).
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 28.5 V between the V
V
O
(–) terminals.
O
(+) and
The following equation determines the required exter-
nal-resistor value to obtain a percentage output voltage
change of
%.
V
O
100
%
+
(
1.225
%
Only trim up to 0.5 V maximum; see note above.
+
I
on/off
–
V
on/off
CASE
ON/OFF
V
I
(+)
V
I
(–)
SENSE(+)
SENSE(–)
V
O
(+)
V
O
(–)
V
O
(+)
SENSE(+)
SENSE(–)
V
O
(–)
V
I
(+)
V
I
(–)
I
O
LOAD
CONTACT AND
DISTRIBUTION LOSSES
SUPPLY
I
I
CONTACT
RESISTANCE
R
adj-down
---%
2.255
–
k
=
Radj-up
)
--------------------------------------
100
---------------------------------
2
%
+
(
)
%
–
=
k
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FC3510 | ASIC |
| FC3560 | ASIC |
| FC3580 | ASIC |
| FC510 | |
| FC520 | |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FC250R1 | 制造商:MA-COM 制造商全稱:M/A-COM Technology Solutions, Inc. 功能描述:Power Module:dc-dc Converter; 18 Vdc to 36 Vdc Input, 28 Vdc Output; 250 W |
| FC2528 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| FC252U | 制造商:AB 功能描述:POT2.5K ALLEN BRADLEY S7D7B |
| FC255 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:THIN SMD LOW / MEDIUM FREQUENCY CRYSTAL UNIT |
| FC-255 | 制造商:Epson Toyocom 功能描述:Crystal unit,32.768kHz,SMD,12.5pF,20ppm |
發(fā)布緊急采購，3分鐘左右您將得到回復。