LS4301-7R POWER-ONE [Power-One], LS4301-7R Datasheet - Page 4

• Manufacturer Part Number: LS4301-7R
• Description: 100 Watt AC-DC Converters with PFC
• Manufacturer: POWER-ONE [Power-One]

Cassette Style
Edition 01/01.2001
Electrical Input Data
General Conditions
– T
– Pin 18 connected to pin 14, U
– Sense line pins S+ and S– connected to Vo+ and Vo– respectively.
Table 2: Input data
1
2
3
4
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 installed!)
Table 3: Fuse Specification
1
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 U
considered! Between U
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
filter form an effective protection against high input tran-
sient voltages.
Input
Characteristics
U
U
I
P
P
R
R
C
U
U
With double output modules, both outputs loaded with I
Valid for -7 versions with NTC, (-9 versions exclude the NTC). Initial switch-on cycle. Subsequent switch-on/off cycles increase the in-
rush current peak value.
AC frequency range 47...63 Hz.
For DC-input please ask your local Power-One partner.
Module
LS
Fuse size 5
i
i0
i inh
i
i nom
i
NTC
i
i RFI
i abs
A
1
= 25 C, unless T
Operating Input voltage
Nominal Input voltage
Input current
No-load input power
Idle input power
Input resistance
NTC resistance
Input capacitance
Conducted input RFI
Radiated input RFI
Input voltage limits
without damage
20 mm
Fuse type
slow-blow
C
2
is specified.
i min
and the undervoltage lock-out
Fuse rating
SP T
Conditions
I
T
U
U
unit inhibited
T
EN 55022
U
o
o
C min
C
i nom
i min
i nom
adjusted to U
= 0... I
= 25 C
… U
... T
, I
, I
o nom
o nom
o nom
C max
i max
100 Watt AC-DC Converters
1
i abs
o nom
4 A, 250 V
should be
–400
3200 4000
–400
min
480
85
80
o nom
(option P); R input not connected.
.
0.55
230
100
typ
9.0
3.5
LS
B
B
max
255
120
400
400
Reverse Polarity Protection
Should the input voltage to the unit be supplied from a DC
source the built-in bridge rectifier provides reverse polarity
protection. (For DC-input operation, please consult your lo-
cal Power-One partner.)
Inrush Current Limitation
The modules of the versions -7, incorporate an NTC resis-
tor 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:
Fig. 3
Equivalent circuit diagram for input impedance.
10
5
I
inr p
U
= ––––––––––––––––
V AC
i rms
( R
V DC
A
Unit
m
R
V
W
rms
F
s ext
s ext
p
3,4
U
i rms
+ R
I
inr p
i
• 2
+ R
NTC
)
R
i
R
NTC
S Series PFC
C
i
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