K Series with PFC Data Sheet
150
–
280 Watt AC-DC Converters
Features
• RoHS lead-free-solder and lead-solder-exempted pro-
ducts are available
•
5 year warranty for RoHS compliant products with an
extended temperature range
• Class I equipment
• Power factor >0.93, harmonics IEC/EN 61000-3-2
• Immunity according to IEC/EN 61000-4-2, -3, -4, -5,
-6, -8, -9
• Compliant with EN 50155, EN 50121-4, EN 45545
(version V108 or later).
• High efficiency
• Input over- and undervoltage lockout
• Adjustable output voltage with remote on/off
• 1 or 2 outputs: SELV, no load, overload, and short-circuit
proof
• Rectangular current limiting characteristic
• PCBs protected by lacquer
• Very high reliability
111
4.4"
3U
80
3.2"
16 TE
168
6.6"
Safety-approved to the latest edition of IEC/EN 60950-1
and UL/CSA 60950-1
Description
The LK4000/5000 Series of AC-DC converters represents a
flexible range of power supplies for use in advanced
electronic systems; the LKP models are an extension with
increased output power, but optimized to 230 VAC. Features
include full power factor correction, good hold-up time, high
efficiency and reliability, low output noise, and excellent
dynamic response to load/line changes.
The converters are protected against surges and transients
occurring at the source lines. Input over- and undervoltage
lockout circuitry disables the outputs, when the input voltage
is outside of the specified range. Input inrush current
limitation is included for preventing circuit breakers and fuses
from tripping at switch-on.
All outputs are overload, open- and short-circuit proof, and
protected by a built-in suppressor diode. The outputs can be
inhibited by a logic signal applied to connector pin 18. If the
inhibit function is not used, pin 18 must be connected with pin
14 to enable the outputs.
LED indicators display the status of the converter and allow
visual monitoring of the system at any time.
Full input to output, input to case, output to case and output to
output isolation is provided. The converters are designed and
built according to the international safety standards IEC/EN
60950-1 2
nd
Ed. They have been approved by safety
agencies.
The case design allows operation at nominal load up to 71 °C
in a free air ambient temperature. If forced cooling is provided,
the ambient temperature may exceed 71 °C, but the case
temperature must remain below 95 °C under all conditions.
However, higher output power up to 280 W is possible
depending on environmental conditions and converter model.
Table of Contents
Page
Page
Electromagnetic Compatibility (EMC) ........................... 16
Environmental Conditions ............................................. 17
Mechanical Data ............................................................ 18
Safety and Installation Instructions ............................... 20
Description of Options ................................................... 22
Accessories ................................................................... 27
Description ....................................................................... 1
Model Selection ............................................................... 2
Functional Description ..................................................... 4
Electrical Input Data ........................................................ 5
Electrical Output Data ..................................................... 8
Auxiliary Functions ........................................................ 13
Copyright © 2018, Bel Power Solutions Inc. All rights reserved.
BCD20001-G Rev AF1, 17-Apr-2018
MELCHER
The Power Partners.
Page 1 of 28
K Series with PFC Data Sheet
150
–
280 Watt AC-DC Converters
An internal temperature sensor generates an inhibit signal,
which disables the outputs, when the case temperature
T
C
exceeds the limit. The outputs automatically recover, when
the temperature drops below the limit.
Various options are available to adapt the converters to
individual applications. An external temperature sensor is
available to allow for temperature adapted battery charging.
The converters may either be plugged into 19" rack systems
according to IEC 60297-3, or be mounted on a chassis or
plate.
Important:
These products are intended to replace the LK1000 and LK2000
models, in order to comply with IEC/EN 61000-3-2. For appli-
cations with DC input or main frequencies other than 50/60 Hz, the
LK1000 and LK2000 model types are still available.
Model Selection
Non-standard input/output configurations or special customer adaptations are available on request.
Table 1: Standard models
Output 1
V
o nom
[VDC]
5.1
5.1
12
15
24
12
15
24
12
24
24
20
25
12
10
6
6
5
3
10
5.2
5.8
Output 2
I
o nom
[A]
–
–
–
–
–
12
3
15
3
24
3
12
3
24
3
24
3
–
–
–
–
–
6
5
3
10
5.2
5.8
Operating input range
V
o nom
[VAC]
85 – 264
85 – 264
Type designation
I
o nom
[A]
LK4002-9ERG
LK4003-6ERG
LK4301-9ERG
LK4501-9ERG
LK4601-9ERG
LK5320-9ERG
LK5540-9ERG
LK5660-9ERG
LKP5320-6ERG
LKP5660-9ERG
LKP5661-5ERG
Efficiency
1
V
i min
–
V
i max
[VAC]
79
79
84
85
86
83*
83
84*
85
87*
87*
Options
η
min
[%]
-7, -7E, P, D
2
, T, K
4
, B, B1, non-G
P, D
2
, T, K
4
, B, B1, non-G
-7, -7E, P, D
2
, T, B, B1, non-G
-7, -7E, P, D
2
, T, B, B1, non-G
-7, -7E, P, D
2
, T, B, B1, non-G
-7, -7E, P, D
2
, T, B, B1, non-G
-7, -7E, P, D
2
, T, B, B1, non-G
-7, -7E, P, D
2
, T, B, B1, non-G
-6, P, D
2
, T, B, B1, non-G
-7, -7E, P, D
2
, T, B, B1, non-G
P, D
2
, T, B, B1, non-G
85 – 264
187 – 255
* Valid for actual models with version V 107 or later.
1
Min. efficiency at
V
i nom
,
I
o nom
and
T
A
= 25 °C. Typical values are approximately 2% better.
2
Different options D (D0 – DD).
3
Second output semi-regulated
5
For new designs, use only option K.
Table 2: Battery charger models
Nom. output values Output range
4
V
o nom
I
o nom
V
o min
–
V
o max
[VDC]
[A]
[VAC]
12.84
25.68
2
51.36
3
25.68
2
25.68
2
51.36
3
51.36
3
1
Operating input range
V
i min
–
V
i max
[VAC]
85 – 264
Type designation
Efficiency
1
η
min
[%]
84
84*
84*
87*
87*
87*
87*
Options
10
5.4
2.7
9
10
4.5
5
12.62 – 14.12
25.25 – 28.25
25.5 – 56.5
25.25 – 28.25
25.25 – 28.25
50.5 – 56.5
50.5 – 56.5
LK4740-9ER
LK5740-9ER
LK5740-9ER
LKP5740-9ER
LKP5741-5ER
LKP5740-9ER
LKP5741-5ER
-7, -7E, D
2
, T, B, B1, non-G
-7, -7E, D
2
, T, B, B1, non-G
-7, -7E, D
2
, T, B, B1, non-G
-7, -7E, D
2
, T, B, B1, non-G
D
2
, T, B, B1, non-G
-7, -7E, D
2
, T, B, B1, non-G
D
2
, T, B, B1, non-G
187 – 255
187 – 255
* Valid for actual models with version V 107 or later.
Min. efficiency at
V
i nom
,
I
o nom
and
T
A
= 25 °C. Typical values are approximately 2% better.
2
Both outputs connected in parallel
3
Both outputs connected in series
4
Controlled by the battery temperature sensor; see
Accessories
NFND: Not for new designs
Preferred for new designs
BCD20001-G Rev AF1, 17-Apr-2018
MELCHER
The Power Partners.
Page 2 of 28
K Series with PFC Data Sheet
150
–
280 Watt AC-DC Converters
Part Number Description
Operating input voltage
V
i
:
85 – 264 VAC
............................................................
LK
187 – 255 VAC
........................................................
LKP
Number of outputs (4 = single, 5 = double) .................... 4, 5
Nominal voltage output 1 (main output,
V
o1 nom
)
5.1 V ............................................................................ 0
12 V ............................................................................. 3
15 V ......................................................................... 4, 5
24 V ............................................................................. 6
Other voltages ........................................................ 7, 8
1
Nominal voltage output 2 (V
o2 nom
)
None (single-output models) ..................................... 01
12 V, 12 V
..............................................................................................
20
15 V, 15 V
..............................................................................................
40
24 V, 24 V ................................................................. 60
Other specifications or additional features
1 .....
21 – 99
6
Operational ambient temperature range
T
A
:
–25 to 71 °C ................................................................ -7
– 40 to 71 °C ............................................................... -9
–25
2
to 60 °C .............................................................. -6
–25
2
to 50 °C .............................................................. -5
Other
1
....................................................................... -0
1
Auxiliary functions and options:
Inrush current limitation ............................................. E
2
Output voltage control input ....................................... R
3
Potentiometer (output voltage adjustment) ................ P
3
Undervoltage monitor (D0 – DD, to be specified) ...... D
4
Current share ............................................................... T
H15S4 connector (rather then H15S2) ...................... K
5
Cooling plate standard case ................................. B, B1
Cooling plate for long case 220 mm
1
...................... B2
1
RoHS-compliant for all 6 substances .......................... G
1
2
3
4
5
6
LK 5 5 40 -9 E R D3 T B1 G
Customer-specific models
Option E is mandatory for all -9 models. Models with -5E or -6E are functional down to –40 °C.
Feature R excludes option P and vice versa. Option P is not available for battery charger models.
Option D excludes option V and vice versa; option V is available for models with 5.1 V output only (LK4003, etc.).
Option K is available for models with 5.1 V output only (LK4002, LK4003, etc.) in order to provide compatibility with LK1001 models.
Except numbers specified above
Example:
LK5540-9ERD3TB1G: Power factor corrected AC-DC converter, operating input voltage range 85 – 264 VAC,
2 electrically isolated outputs, each providing 15 V, 5 A, equipped with inrush current limiter, R-input to adjust the
output voltages, undervoltage monitor D3, current share feature, cooling plate B1, RoHS compliant.
Note:
The sequence of options must follow the order above. This part number description is descriptive only; it is not inteded for creating
part numbers.
NFND: Not for new designs
Preferred for new designs
Product Marking
Basic type designation, applicable approval marks, CE mark,
warnings, pin designation, Power-One patents and company
logo, identification of LEDs, test sockets, and potentiometer.
Specific type designation, input voltage range, nominal output
voltages and currents, degree of protection, batch no., serial
no., data code including production site, modification status,
and date of production.
BCD20001-G Rev AF1, 17-Apr-2018
MELCHER
The Power Partners.
Page 3 of 28
K Series with PFC Data Sheet
150
–
280 Watt AC-DC Converters
Functional Description
The input voltage is fed via an input fuse, an input filter, a
rectifier, and an inrush current limiter to the boost converter.
This step-up converter provides a sinusoidal input current
(IEC/EN 61000-3-2, class D equipment) and charges the bulk
capacitor
C
b
to approx. 370 VDC. This capacitor sources a
single-transistor forward converter and provides the power
during the hold-up time.
The main transformer exhibits a separate secondary winding
for each output. Each generated voltage is rectified and
smoothed by the power choke and the output filter. The
control logic senses the main output voltage
V
o
or
V
o1
and
generates, with respect to the maximum admissible output
currents, the control signal for the switching transistor of the
forward converter.
The second output of double output models is tracking the
main output, but has its own current limiting circuit. If the main
output voltage drops due to current limitation, the second
output voltage will fall as well and vice versa.
A separate auxiliary converter generates the supply voltages
for all primary and secondary control circuits and options.
P
C
Y
03001d
Forward converter (approx. 80 kHz)
Boost converter (approx. 100 kHz)
26
N~ 28
1
Bridge retifier
Input filter
C
Y
Output
filter
C
b
+
Control circuit
16 R
18 i
20 D/V
22 T
12 S+
4
Vo+
6
8
10
Fuse
2
C
Y
Vo–
L~ 30
32
24
14 S–
C
Y
Fig. 1
Block diagram of single-output models
1
2
–
+
Transient suppressor (VDR)
Inrush current limiter (NTC, only models with
T
A min
= –25 °C ) or option E
P
Boost converter (approx. 100 kHz)
Forward converter (approx. 80 kHz)
03002d
N~ 26
28
1
C
Y
Bridge retifier
Input filter
C
b
+
C
Y
Control circuit
16
18
20
22
R
i
D
T
Output 1
filter
12 Vo1+
14 Vo1–
4
Vo2+
6
8
Vo2–
10
Fuse
2
L~ 30
32
24
C
Y
Output 2
filter
Fig. 2
Block diagram of double-output models
1
2
–
+
Transient suppressor (VDR)
Inrush current limiter (NTC, only models with
T
A min
= –25 °C ) or option E
BCD20001-G Rev AF1, 17-Apr-2018
MELCHER
The Power Partners.
Page 4 of 28
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
Characteristics
V
i
V
i op
V
i nom
I
i
P
i0
P
i inh
R
i
R
NTC
C
b
V
i RFI
Rated input voltage range
Operating input voltage range
Nominal input voltage
Input current
No-load input power
Idle input power
Input resistance
NTC resistance (see fig. 3)
3
Input capacitance
Conducted input RFI
Radiated input RFI
V
i abs
Input voltage limits
without damage
EN 55011/55022
V
i nom
,
I
o nom
conv. not operating
Conditions
I
o
= 0
–
I
o nom
T
C min
to
T
C max
50 – 60 Hz
V
i nom
,
I
o nom 2
V
i min
–
V
i max
,
I
o
= 0
converter inhibited
480
3200
100
4000
150
B
A
283
–400
400
–400
180
min
100
85
230
0.8
9
3.5
10
5
480
3200
110
4000
136
B
B
283
400
VAC
V
peak 4
165
µF
LK
typ
max
240
264
min
200
187
230
1.25
9
3.5
10
5
mΩ
A
W
LKP
typ
max
240
255
VAC
1
Unit
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
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
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
I
inr p
= ––––––––––––––––
(R
s ext
+
R
i
+
R
NTC
)
04001b
Input Under- /Overvoltage Lockout
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
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.
R
s ext
I
inr p
R
i
R
NTC
C
b
+
∼
V
i
Fig. 3
Equivalent circuit diagram for input impedance.
BCD20001-G Rev AF1, 17-Apr-2018
MELCHER
The Power Partners.
Page 5 of 28
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