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K Series with PFC Data Sheet
150 – 280 Watt AC-DC Converters
Electrical Input Data
General Conditions:
– T A = 25 °C, unless T C is specified.
– Pin 18 connected to pin 14, R input not connected, V o adjusted to V o nom (option P)
– Sense line pins S+ and S– connected to Vo+ and Vo–, respectively (single-output models)
Table 3: Electrical input data
Input
LK
LKP
Unit
Characteristics
Conditions
min
typ
max
min
typ
max
V i
V i op
Rated input voltage range
Operating input voltage range
I o = 0 – I o nom
T C min to T C max
100
85
240
264
200
187
240
255
VAC 1
V i nom
Nominal input voltage
50 – 60 Hz
230
230
I i
Input current
V i nom , I o nom 2
0.8
1.25
A
P i0
P i inh
No-load input power
Idle input power
V i min – V i max , I o = 0
converter inhibited
9
3.5
10
5
9
3.5
10
5
W
R i
Input resistance
480
480
m ?
R NTC
NTC resistance (see fig. 3) 3
conv. not operating
3200
4000
3200
4000
C b
Input capacitance
100
150
180
110
136
165
μ F
V i RFI
Conducted input RFI
Radiated input RFI
EN 55011/55022
V i nom , I o nom
B
A
B
B
V i abs
Input voltage limits
283
283
VAC
without damage
–400
400
–400
400
VDC 4
1
2
3
4
Rated input frequency: 50 – 60 Hz, operating frequency: 47 – 63 Hz. For operation at other frequencies, contact Power-One.
With double-output models, both outputs loaded with I o nom
Valid for models without option E. This is the value of the NTC resistance at 25 °C and applies to cold converters for the initial
switch-on cycle. Subsequent switch-on/off cycles increase the inrush current peak value.
Operation with DC input voltage is not specified and not recommended.
Input Fuse and Protection
A VDR together with the input fuse and a symmetrical input
filter form an effective protection against high input
transient voltages.
A fuse mounted inside the converter in series to the phase
line protects against severe defects. A second fuse in the
neutral line may be necessary in certain applications; see
Installation Instructions.
Table 4: Fuse specification
Inrush Current Limitation
The models without option E incorporate an NTC resistor
in the input circuitry, which at initial turn-on reduces the
peak inrush current value by a factor of 5 to 10 to protect
connectors and switching devices against damage.
Subsequent switch-on cycles within short periods will
cause an increase of the peak inrush current value due to
the warming-up of the NTC resistor.
The inrush current peak value (initial switch-on cycle) can
be determined by following calculation:
V i ? √ 2
Model
LK4/5000
LKP
Fuse type
slow-blow
slow-blow
Fuse rating
SP T, 4 A, 250 V, 5 × 20 mm
SP T, 4 A, 250 V, 5 × 20 mm
––
I inr p = ––––––––––––––––
( R s ext + R i + R NTC )
04001b
Input Under- /Overvoltage Lockout
R s ext
I inr p
R i
R NTC
If the input voltage remains below approx. 65 VAC (LKP:
150 VAC) or exceeds V i abs , an internally generated inhibit
signal disables the output(s). Do not check the overvoltage
～
V i
C b
+
lockout function!
If V i is below V i min , but above the undervoltage lockout
level, the output voltage may be below the value specified
in the tables Electrical Output Data.
Fig. 3
Equivalent circuit diagram for input impedance.
BCD20001-G Rev AC, 16-Dec-2010
Page 5 of 29
www.power-one.com
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