參數(shù)資料
型號: LK4301-7ED5
廠商: POWER-ONE INC
元件分類: 電源模塊
英文描述: 1-OUTPUT 150 W AC-DC PWR FACTOR CORR MODULE
封裝: HEAT SINK, METAL, CASE K02
文件頁數(shù): 23/28頁
文件大?。?/td> 1215K
代理商: LK4301-7ED5
K Series
AC-DC Converters >100 Watt
Rugged Environment
Edition 4/4.99
4/28
MELCHER
The Power Partners.
Rs ext
Ri
RNTC
Iinr p
Ui rms
Ci
04001
Input Under-/Overvoltage Lock-out
If the input voltage remains below approx. 65 V AC or ex-
ceeds approx. 280 V AC an internally generated inhibit sig-
nal disables the output(s). When checking this function the
absolute maximum input voltage rating
Ui abs should be
considered! Between
Ui min and the undervoltage lock-out
level the output voltage may be below the value defined in
table:
Output data (see: Technical Information: Measuring
and Testing).
Input Transient Protection
A VDR together with the input fuse and a symmetrical input
lter form an effective protection against high input tran-
sient voltages.
Input Fuse
A fuse mounted inside the converter protects the module
against severe defects. (If operated from a DC-source this
fuse may not fully protect the module when the input volt-
age exceeds 200 V DC! In applications where the convert-
ers operate at source voltages above 200 V DC an external
fuse or a circuit breaker at system level should be in-
stalled!)
Table 3: Fuse Specication
Module
Fuse type
Fuse rating
LK4/5000 1
slow-blow
SP T
4 A, 250 V
1 Fuse size 5
× 20 mm
Fig. 3
Equivalent circuit diagram for input impedance
Electrical Input Data
General Conditions
TA = 25
°C, unless T
C is specied.
– Pin 18 connected to pin 14,
Uo adjusted to Uo nom (option P); R input not connected.
– Sense line pins S+ and S– connected to Vo+ and Vo– respectively.
Table 2: Input data
Input
LK
Characteristics
Conditions
min
typ
max
Unit
Ui
Operating input voltage
Io = 0…Io nom
85
255
V AC 3, 4
Ui nom Nominal input voltage
TC min…TC max
230
Ii
Input current
Ui nom, Io nom 1
0.8
Arms
Pi o
No-load input power
Ui min…Ui max
9.0
10
W
Pi inh
Idle input power
unit inhibited
3.5
5
Ri
Input resistance
TC = 25°C
480
m
RNTC
NTC resistance 2
3200
4000
Ci
Input capacitance
80
100
120
F
Ui RFI
Conducted input RFI
EN 55022
B
Radiated input RFI
Ui nom, Io nom
B
Ui abs
Input voltage limits
–400
400
V DC
(without damage)
–400
400
VP
1 With double output modules, both outputs loaded with Io nom.
2 Valid for -7, -6, versions with NTC, (-9 versions exclude the NTC). Initial switch-on cycle. Subsequent switch-on/off cycles increase the
inrush current peak value.
3 AC frequency range 47...63 Hz.
4 For DC-input please ask your local Melcher partner
Reverse Polarity Protection
Should the input voltage to the unit be supplied from a DC
source the built-in bridge rectier provides reverse polarity
protection.
Inrush Current Limitation
The modules of the versions -7, -6, incorporate an NTC re-
sistor in the input circuitry which - at initial turn on - reduces
the peak inrush current value by a factor of 5...10 to protect
connectors and switching devices from damage. Subse-
quent switch-on cycles within short periods will cause an
increase of the peak inrush current value due to the warm-
ing-up of the NTC resistor. See also:
E option.
Inrush Current Peak Value
The inrush current peak value (initial switch-on cycle) can
be determined by following calculation:
Ui rms √2
Iinr p = ––––––––––––––––
(
Rs ext + Ri + RNTC)
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