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參數(shù)資料
| 型號： | LK2540-9EPD8TB1 |
| 廠商： | POWER-ONE INC |
| 元件分類： | 電源模塊 |
| 英文描述： | 2-OUTPUT 150 W AC-DC REG PWR SUPPLY MODULE |
| 封裝： | METAL, CASE K02, MODULE |
| 文件頁數(shù)： | 6/27頁 |
| 文件大?。?/td> | 640K |
| 代理商： | LK2540-9EPD8TB1 |
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Rugged Environment
DC-DC Converters >100 W
K-Family
Edition 2/96 - Melcher AG
8 - 15
MELCHER
The Power Partners.
8.1
Test Sockets (Main output only 1)
Test sockets for measuring the output voltage
Uo1 are lo-
cated at the front of the module. The positive test socket is
protected by a series resistor (see Functional Description,
block diagrams). The voltage measured at the test sockets
is approximately 30 mV lower than the value measured at
the output terminals.
1 In case of double output units externally connected in series for
Uo = 24 V, 30 V or 48 V the monitored output voltage is 12 V,
15 V or 24 V respectively.
Output Protection
Each output is protected against overvoltage which could
occur due to a failure of the control circuit by means of a
voltage suppressor diode which, under worst case condi-
tions, may become a short circuit. The suppressor diode
are not designed to withstand externally applied over-
voltages. Overload at any of the two outputs will cause a
shut-down of both outputs. A red LED indicates the over-
load condition.
Inhibit Function
The outputs of a module may be enabled or disabled by
means of a logic signal (TTL, CMOS etc.) applied to the in-
hibit input. If the inhibit function is not required, connect the
inhibit pin 18 to pin 14 to enable the outputs (active low
logic, fail safe).
Fig. 10
Typical output response as a function of inhibit control
Table 9: Inhibit characteristics
Characteristic
Conditions
min
typ
max Unit
Uinh Inhibit
Uo = on Ui min…Ui max
–50
0.8
V
voltage
Uo = off
2.4
50
Iinh
Inhibit current
Uinh = 0
–400
A
tr
Rise time
30
ms
tf
Fall time
depending on
Io
0
t
0
Inhibit
1
0.1
Uo nom
Output
tr
tf
Note:
– Parallel connection of double output units should always
include both, main and second output to maintain good
regulation of both outputs.
– Series connection of second outputs without involving
their main outputs should be avoided as regulation may
be poor.
– The maximum output current is limited by the output with
the lowest current limitation if several outputs are con-
nected in series.
– Not more than 5 units should be connected in parallel.
Parallel or Series Connection of Units
Single or double output units with equal nominal output volt-
age can be connected in parallel without any precautions
using option T.
With option T (current sharing), all units share the current
approximately equally.
Single output units and/or main and second outputs of dou-
ble output units can be connected in series with any other
(similar) output.
Sense Lines
(Only for single output units 5.1 V, 12 V, 15 V, 24 V)
This feature enables compensation for voltage drops
across the connector contacts and if necessary, across the
load lines. If the sense lines are connected at the load
rather than directly at the connector, the user should ensure
that
Uo max (between Vo1+ and Vo1–) is not exceeded. We
recommend connecting the sense lines directly at the fe-
male connector.
For further information, please refer to "Application Notes ".
To ensure correct operation, both sense lines should be
connected to their respective power outputs and the volt-
age difference between any sense line and its respective
power output pin (as measured on the connector) should
not exceed the following values:
Table 10: Voltage compensation allowed using sense
lines
Output
Total voltage difference
Voltage difference
voltage
between sense lines and
between
their respective outputs
Vo– and S–
5.1 V
< 0.5 V
< 0.25 V
12 V, 15 V
< 1.0 V
< 0.25 V
If the output voltages are increased above
Uo nom via R-in-
put control, option P setting, remote sensing or option T, the
output currents must be reduced accordingly so that
Po nom is not exceeded.
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