參數(shù)資料
型號(hào)： LS2540-7RDD
廠商： POWER-ONE INC
元件分類： 電源模塊
英文描述： 2-OUTPUT AC-DC REG PWR SUPPLY MODULE
封裝： HEAT SINK, METAL, CASE S02, MODULE
文件頁(yè)數(shù)： 18/33頁(yè)
文件大?。?/td> 438K
代理商： LS2540-7RDD
S Series Data Sheet
100 Watt AC-DC and DC-DC Converters
APR 26, 2006 revised to SEP 25, 2006
Page 25 of 33
www.power-one.com
Load
1
2
S+
Vo+
Vo–
S–
Vi+
Vi–
T
Vi+
Vi–
S+
Vo+
Vo–
S–
T
1
Max. 5 converters in parallel connection
11036_012006
Converter
Fig. 29
Paralleling of single-output models using option T with the
sense lines connected at the load
1 Leads should have equal length and cross sections and should
run in the same cable loom.
2 Diodes for redundant operation.
Vo+
Vo–
Vo+
Vo–
Load
Vo+
Vo–
11003_102005
Fig. 28
An example of poor wiring for connections in parallel
(unequal length of load lines)
Option T: Current Sharing
This option ensures that the output currents are
approximately shared between all paralleled converters,
hence increasing system reliability. To use this facility,
simply interconnect the T pins of all converters and make
sure that the reference pins for the T-pin (S- for the S1000
or Vo1– for S2000) are also connected together. The load
lines should have equal length and cross section to ensure
equal voltage drops. Not more than 5 converters should be
connected in parallel. The R-pins should be left in an open-
circuit condition. If not, prior to paralleling the Vo1 outputs
should be individually adjusted within 1 to 2%. Parallel
connection
of
converters
with
option
P
is
not
recommended.
Option P: Potentiometer
The potentiometer allows for an output voltage adjustment
in the range of +10/–60% of Vo nom. It is accessible
through a hole in the front cover. This feature enables
compensation of voltage drops across the connector and
wiring. Option P is not recommended if models are
connected in parallel.
In double-output models both outputs are influenced by the
potentiometer setting. If option P is fitted, the R-pin 16 is
not connected.
Note: If the output voltage is increased above Vo nom via the
R-input control, option P setting, remote sensing, or option T,
the output current(s) should be reduced accordingly so that
Po nom is not exceeded.
Load
Max. 5 converters in parallel connection
+–
Power bus
Vo2–
Vo2+
Vo1–
Vo1+
T
Vo2–
Vo2+
Vo1–
Vo1+
T
Converter
11037_012006
Fig. 30
Paralleling of double output models with the outputs
connected in series, and using option T in an application
with a power bus. Note that the signal at the T-pins is
referenced to Vo1-.
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