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AC-DC Converters
MWE Series
TOKO 15/30 Watt AC-DC Converters
Input voltage range 85...264 V AC
3 outputs 5/
±
12 V DC and 5/
±
15 V DC
4300 V DC I/O electric strength test voltage
• Universal AC input
• Flex power topology
• MTBF
>144'000
hours
• Convection cooled
• High switching frequency (>100 KHz)
• State-of-the-art wireless transformer design
• Component derating for high reliability
• Noise standard: meets EN55011/55022
Safety according to IEC/EN 60950, UL 1950, CSA 950
LGA
60
2.36"
110
4.3"
25.4
1.0"
MWE Series
25.4
1.0"
60
2.36"
150
5.91"
MWE 15
MWE 30
NRTL/C
Summary
The MWEseries strikes the right balance between size and
performance right off the drawing board. These ultra com-
pact switchers satisfy the design engineer’s demand for
less space without sacrificing power and efficiency. Very
low profile of one inch is maintained on most models.
Choice of 15 and 30 Watt ratings. Universal AC input on all
models. The modules are UL 1950 (D3), CSA 950 and LGA
(IEC/EN 60950) approved.
Key applications
Equipment for office automation, factory automation, pe-
ripheral, communication, security, display, test and meas-
urement, inspection and medical.
Type Survey and Key Data
Table 1: Type survey
Output 1
1
U
o nom
I
o max
[V DC]
[A]
5
5
5
5
1
2
Output 2
1
U
o nom
I
o max
[V DC]
[A]
12
12
15
15
0.5
1.2
0.5
1.2
Output 3
1
U
o mom
I
o max
[V DC]
[A]
–12
–12
–15
–15
0.5
0.5
0.5
0.5
Input voltage
U
i min
…
U
i max
85…264 V AC
47…63 Hz
110...350 V DC
Output power
T
A
= 40°C
P
o tot
[W]
17.5
31
17.5
31
Efficiency
2
h
[%]
65
65
65
65
Type
designation
MWE 15-01
MWE 30-01
MWE 15-11
MWE 30-11
3.0
5.0
3.0
5.0
The cumulated power of all three outputs may not exceed the total rated power.
Efficiency at
U
i rated
and
I
o nom
.
Table of Contents
Page
Page
Electromagnetic Compatibility (EMC) ....................... 9 - 45
Immunitiy to Environmental Conditions ..................... 9 - 46
Mechanical Data ....................................................... 9 - 47
Safety and Installation Instructions ........................... 9 - 48
Accessories ............................................................... 9 - 49
Summary ................................................................... 9 - 41
Type Survey and Key Data ....................................... 9 - 41
Type Key and Product Marking ................................. 9 - 42
Functional Description ............................................... 9 - 42
Electrical Input Data .................................................. 9 - 43
Electrical Output Data ............................................... 9 - 43
Edition 5/5.2000
1/9
Open Frame
Type Key and Product Marking
Type Key
AC-DC Converters
MWE Series
MWE 15 - 01
Series ....................................................................... MWE
Nominal output power [W] ......................................... 15/30
Output configuration .................................................. 01/11
Example: MWE 15-01 = AC-DC converter providing 15 W on 3 outputs of 5 V/3A; 12 V/0.5 A and –12 V/0.5 A.
Functional Description
03073
Regulator
V2
L
Fuse
Regulator
Input
filter
Overload
protection
and control
circuit
G2
N
Y
FG
V3
V1
Output voltage
sensing circuit
G1
Y Y Y
FG
Fig. 1
Block diagram MWE 15
03074
Regulator
V2
L
G2
Fuse
Input
filter
Regulator
V3
V1
N
Y
FG
Overload
protection
and control
circuit
FG
Y
Output voltage
sensing circuit
Y
G1
Fig. 2
Block diagram MWE 30
Edition 5/5.2000
2/9
Open Frame
Electrical Input Data
AC-DC Converters
MWE Series
General Condition:
T
A
= 25°C unless otherwise specified
Table 2: Input data
Characteristics
MWE 15-...
100, 120, 200, 220, 240
85…264
47…63
100/200 V AC
100 V AC
100 V AC
0.45/0.25
30
0.5
mA
0.85/0.45
Hz
A
MWE 30-...
Unit
V AC
U
i rated
U
i
f
i
I
i
l
i m
I
i leak
1
Rated input voltage
Input voltage range
Line frequency
Input current
1
(typ.)
Inrush current
1
(max.)
Leakage current (max.)
At
U
i rated
and
I
o nom
.
Electrical Output Data
General Condition:
T
A
= 25°C unless otherwise specified
Table 3a: Output data 15 W types
Type
Characteristics
V1
nom.
5
±1
1.25
MWE 15-01
V2
12
±4
0.15
Not provided
min.
typ.
max.
0.5
2
3
0
0.3
0.5
105
17.5
15
max.
85...264 V
0...100%
typ.
0…50°C
max.
100
±2.0
±2.0
6
150
±0.5
±1.0
0.3
±1
100
10/20
65
6
150
±0.5
±0.5
15
100
±2.0
±2.0
0
0.2
0.5
0.5
2
3
V3
–12
±4
0.1
V1
5
±1
1.25
MWE 15-11
V2
15
±4
0.15
Not provided
0
0.3
0.5
105
17.5
7.5
150
±0.5
±1.0
0.3
±1
100
10/20
65
%
ms
7.5
150
±0.5
±0.5
mVpp
%
0
0.2
0.5
A
V3
–15
±4
0.1
Unit
V
%
A
U
o
D
U
o
Output voltage
Voltage setting tolerance
Voltage setting load
Overvoltage protection
Output current
I
o set
U
o P
I
o
I
o L
P
o tot
P
o max
u
o
D
U
o U
D
U
o I
D
U
o t
a
Uo
Output current limitation
2
Total rated output
Output power
Ripple-noise
1
Line regulation
Load regulation
Drift (t = 0.5...8 h)
Change in temp.,
Rise time
1
max.
%
W
t
o r
t
o h min
h
1
2
Hold up time
1
100/200 V AC
Efficiency
1
typ.
At
U
i rated
and
I
o nom
and normal temperature.
Operating at approx. 105% of rated power, constant current method, automatic recovery.
Edition 5/5.2000
3/9
Open Frame
Table 3b: Output data 30 W types
Type
Characteristics
V1
nom.
5
±1
1.85
AC-DC Converters
MWE 30-01
V2
12
±4
0.5
Not provided
min.
typ.
max.
1
3
5
0
1
1.2
105
31
25
max.
85...264 V
0...100%
typ.
0…50°C
max.
100
±2.0
±2.0
14
150
±0.5
±1.0
0.3
±1
100
10/20
65
6
150
±0.5
±0.5
25
100
±2.0
±2.0
0
0.33
0.5
1
3
5
V3
–12
±4
0.5
V1
5
±1
1.85
MWE 30-11
V2
15
±4
0.5
Not provided
0
0.8
1.2
105
31
18
150
±0.5
±1.0
0.3
±1
100
10/20
65
MWE Series
V3
–15
±4
0.5
Unit
V
%
A
U
o
D
U
o
Output voltage
Voltage setting tolerance
Voltage setting load
Overvoltage protection
Output current
I
o set
U
o P
I
o
0
0.21
0.5
A
I
o L
P
o tot
P
o max
u
o
D
U
o U
D
U
o I
D
U
o t
a
Uo
Output current limitation
2
Total rated output
Output power
Ripple-noise
1
Line regulation
Load regulation
Drift (t = 0.5...8 h)
Change in temp.,
Rise time
1
max.
%
W
7.5
150
±0.5
±0.5
mVpp
%
t
o r
t
o h min
h
1
2
ms
Hold up time
1
100/200 V AC
Efficiency
1
typ.
%
At
U
i rated
and
I
o nom
and normal temperature.
Operating at approx. 105% of rated power, constant current method, automatic recovery.
Input and Output Terminals
Table 4: Input and output terminals
Terminal
L
N
FG
V1
V2
V3
G1, G2
Function
Line input
Neutral input
Frame ground terminal
Output Terminal 1
Output Terminal 2
Output Terminal 3
Ground Terminals
Explanation
1. Connect to a sine wave of 47...63 Hz, 85...264 V AC, single phase.
2. Use a double or triple core cable fo the input line.
3. Space the AC input line as far as possible from the DC output line.
Connect with low impedance to ground line of equipment on which the power supply is mounted.
Stabilized output of 5 V DC.
Stabilized output of 12 or 15 V DC.
Stabilized output of –12, or –15 V DC.
G1: ground terminal for V1, G2: ground terminal for V2 and V3.
G1 and G2 are internally interconnected.
Proper Method of Operation
To achieve the proper output voltage from each of the three
output channels, the load currents must be within the mini-
mum-maximum ratings. If the load current is below the
minimum, use a pre-load.
Output Current Limitation
Each channel has its own built-in current limitation at
approx. 105% of the rated currents. In the case of overload-
ing, the circuit operates to avoid excessive current. After
removal of the overload, the circuit automatically resets.
Inrush Current
All models feature inrush current limitation circuit by means
of power thermistors. Switching the AC input on/off repeat-
edly in rapid succession (less than 2 minutes waiting)
should be avoided. An appropriate AC switch for each
model based on its specifications should be provided.
Series or Parallel Connection
The outputs cannot be operated in series or parallel con-
nection with other type of sources.
Edition 5/5.2000
4/9
Open Frame
Thermal Considerations
AC-DC Converters
P
o
/P
o max
1.2
1.0
0.8
0.6
0.4
0.2
0
–10
0
10
20
30
40
50
MWE Series
05118
The relation between the maximum allowed output power
P
o allwed
, the temperature
T
A
of the surrounding air and the
mounting method is given in the:
Installation Instruction.
The percentage rates apply if the AC-DC converter is lo-
cated in free, quasi-stationary air (convection cooling).
The following figure shows the allowed output power of an
AC-DC converter.
For
P
o max
values see:
Type Survey and Key Data.
The ther-
mal conditions are influenced by input voltage, output cur-
rent, airflow and temperature of surrounding components
and surface.
Caution:
The installer must ensure that under all operat-
ing conditions
T
A
remains within the limits stated in the ta-
ble.
60
70
T
A
[°C]
Fig. 3
Maximum allowed output power versus ambient tempera-
ture
Electromagnetic Compatibility (EMC)
Electromagnetic Immunity
A metal oxide VDR together with an input fuse and an input
filter form an effective protection against high input tran-
sient voltages which typically occur in most installations,
but especially in battery driven mobile applications. The
MWE series has been successfully tested to the following
specifications:
Table 5: Immunity type tests
Phenomenon
Electrostatic
discharge
Standard
IEC/EN
61000-4-2
Level
x
Coupling
mode
3
air discharge
to frame
antenna in
1 m distance
i/c, +i/–i
Value
applied
6000 V
p
Waveform
1/50 ns
Source
Imped.
330
Ω
Test
procedure
10 positive and
10 negative
discharges
26…1000 MHz
50
Ω
1 min positive
1 min negative
bursts per
coupling mode
5 pos. and 5 neg.
surges per
coupling mode
In
Per-
oper. form.
yes
1
Electromagnetic IEC/EN
field
61000-4-3
Electrical fast
transient/burst
IEC/EN
61000-4-4
x
x
10 V/m
2000 V
p
sine wave mod-
ulated w. 1 kHz
5/50 ns
yes
yes
1
1
Surge
IEC/EN
61000-4-5
x
i/c
2000 V
p
1.2/50
µs
12
Ω
yes
2
1
1
2
3
Normal operation, no deviation from specifications.
No load.
i = input, o = output, c = case.
Edition 5/5.2000
5/9
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