參數(shù)資料
型號(hào)： LK2540-7RD0TB1
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(yè)數(shù)： 13/26頁(yè)
文件大?。?/td> 1027K
代理商： LK2540-7RD0TB1
Cassette Style
AC-DC Converters
K Series
Edition 5/5.2000
20/26
Input
Filter
Control
Converter
FET
Ci
RI
RS
Rectifier
PFC
-
Control
1
1001
Fig. 28
Option E block diagram
Precaution:
Subsequent switch-on cycles at start-up are limited to
max. 10 cycles during the rst 20 seconds (cold unit) and
at continuing on/off (
TC =95°C) max. 1 cycle every
8 sec.
15
Ii [A]
10
5
0
–5
–10
–15
0
20
40
60
80
t [ms]
tinr
LK type
Ui = 230 V AC
Po = Po nom
Capacitor Ci
fully charged
Normal operation
(FET fully conducting)
20
10065
Fig. 29
Inrush current with option E
-9 Extended Temperature Range
Option -9 extends the operational ambient temperature
range from –25...71
°C (standard to –40...71°C. The power
supplies provide full nominal output power with convection
cooling. Option -9 excludes inrush current limitation by
NTC.
P Potentiometer
The potentiometer provides an output voltage adjustment
range of +10/–60% of
Uo nom and 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 units are connected in parallel.
Option P excludes the R-function. With double output units
both outputs are affected by the potentiometer setting (dou-
bling the voltage setting if the outputs are in series).
If the output voltages are increased above
Uo nom via R-in-
put control, option P setting, remote sensing or option T, the
output current(s) should be reduced accordingly so that
Po nom is not exceeded.
E Inrush Current Limitation
The converters may be supplemented by an electronic cir-
cuit (option E, replacing the standard built-in NTC) to
achieve an enhanced inrush current limiting function.
Table 17: Inrush current characteristics with option E
Characteristics
LK
Unit
Ui = 230 V AC
typ
max
Iinr p
Peak inrush current
–
21.7
A
tinr
Inrush current duration
35
50
ms
Description of Options
Table 16: Survey of options
Option
Function of option
Characteristic
–9
Extended operational ambient temperature range
TA = –40...71°C
E
Electronic inrush current limitation circuitry
Active inrush current limitation
P 1
Potentiometer for fine adjustment of output voltage
Adjustment range +10/-60% of
Uo nom, excludes R input
D 2
Input and/or output undervoltage monitoring circuitry
Safe data signal output (D0...DD)
V 2 3
Input and/or output undervoltage monitoring circuitry
ACFAIL signal according to VME specifications (V0, V2, V3)
T
Current sharing
Interconnect T-pins if paralleling outputs (5 units max.)
B1/B2
Cooling plate
Replaces standard heat sink, allowing direct chassis-mounting
1 Function R excludes option P and vice versa
2 Option D excludes option V and vice versa
3 Only available if main output voltage Uo1 = 5.1 V
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