M Series Data Sheet
50 Watt DC-DC and AC-DC Converters
Features
• Extremly wide operating input voltage ranges from 8 to
385 VDC and 85 to 264 VAC, 47 to 440 Hz
• RoHS lead-free-solder and lead-solder-exempted
products available
• Class I equipment
• Input over- and undervoltage lockout
• 1, 2, or 3 individually isolated outputs up to 72 V
• Outputs: SELV, no load, overload, short-circuit proof,
rectangular current limiting characteristic
• Adjustable output voltages with remote on/off
• Immunity according to IEC/EN 61000-4-2, -3, -4, -5, -6
• Emissions according to EN 55011/55022
• According to EN 45545 and NF-F-16 (Version V107 or later)
• All PCBs boards coated by protective lacquer
• Very high reliability
111
4.37"
3U
168
6.6"
• Battery charger models available
Safety-approved to the latest edition of IEC/EN 60950-1
and UL/CSA 60950-1
39
1.54"
8 TE
Description
The M Series of DC-DC and AC-DC converters represents a
broad and flexible range of power supplies for use in advanced
industrial electronic systems. Features include high efficiency,
reliability, low output voltage noise and excellent dynamic
response to load/line changes due to individual regulation of
each output.
The converter inputs are protected against surges and
transients
occurring
at the source lines. An input over- and
undervoltage lockout circuit disables the outputs, if the input
voltage is outside the specified range. An inrush current
limitation prevents circuit breakers and fuses from tripping at
switch-on.
All outputs are open- and short-circuit proof, and are protected
against overvoltages by means of built-in suppressor diodes.
The outputs can be inhibited by a logic signal applied to the
connector (pin 2). If the inhibit function is not used, pin 2 should
be connected to pin 23 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 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 should remain below 95 °C under all conditions.
A 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.
The converters may either be plugged into a 19" rack system
according to IEC 60927-3 or be mounted onto a chassis or a
plate.
Table of Contents
Page
Page
Electromagnetic Compatibility (EMC) .................................. 14
Immunity to Environmental Conditions ................................ 16
Mechanical Data .................................................................. 17
Safety and Installation Instructions ...................................... 18
Description of Options ......................................................... 20
Accessories .......................................................................... 26
Description ............................................................................. 1
Model Selection ..................................................................... 2
Functional Description ........................................................... 5
Electrical Input Data ............................................................... 6
Electrical Output Data ............................................................ 8
Auxiliary Functions ............................................................... 11
Copyright © 2017, Bel Power Solutions Inc. All rights reserved.
BCD20018-G Rev AE, 15-Feb-2017
MELCHER
The Power Partners.
Page 1 of 26
M Series Data Sheet
50 Watt DC-DC and AC-DC Converters
Model Selection
Non-standard input / output configurations or special custom
adaptions are available on request. Table 1 provides an
overview of the basic input and output configurations. More
than 1000 different model types have been manufactured
with different input /output configurations and customized
specialties. Please consult the company for additional model
types!
Table 1a: Standard models AM, BM, FM
Output 1
V
o nom
I
o nom
[VDC] [A]
5.1
12
15
24
48
5.1
5.1
12
15
24
5.1
5.1
5.1
8.0
4.0
3.4
2.0
1.0
4.0
4.0
2.0
1.7
1.0
5.0
5.0
5.0
Output 2
V
o nom
I
o nom
[VDC] [A]
-
-
-
-
-
5.1
24
12
15
24
12
15
24
-
-
-
-
-
4.0
1.0
2.0
1.7
1.0
0.7
0.6
0.35
Output 3
V
nom
I
o nom
[VDC] [A]
-
-
-
-
-
-
-
-
-
-
12
15
24
-
-
-
-
-
-
-
-
-
-
0.7
0.6
0.35
Operating input voltage range and efficiency
V
i min
–
V
i max
8
–
35 VDC
AM1001-9RG
AM1301-9RG
AM1501-9RG
AM1601-9RG
AM1901-9RG
AM2001-9G
AM2060-9G
AM2320-9G
AM2540-9G
AM2660-9G
AM3020-9G
AM3040-9G
AM3060-9G
η
min1
[%]
72
79
79
81
81
-
-
77
78
-
75
75
-
V
i min
–
V
i max
14
–
70 VDC
BM1001-9RG
BM1301-9RG
BM1501-9RG
BM1601-9RG
BM1901-9RG
BM2001-9G
BM2060-9G
BM2320-9G
BM2540-9G
BM2660-9G
BM3020-9G
BM3040-9G
BM3060-9G
η
min1
[%]
74
80
81
83
83
-
-
79
80
-
76
76
-
V
i min
–
V
i max
20
–
100 VDC
FM1001-9RG
FM1301-9RG
FM1501-9RG
FM1601-9RG
FM1901-9RG
-
-
FM2320-9G
FM2540-9G
--
FM3020-9G
FM3040-9G
-
η
min1
[%]
74
80
81
82
83
-
-
80
79
76
76
-
-7, P
D0 – D9,
V0
–
V3
3
F, A, K, H
non-G
-7, P
D0 – D9
A, K, H
non-G
-7, P
D0 – D9, A
K, H, non-G
Options
Table 1b: Standard models CM, DM, LM
Output 1
V
o nom
I
o nom
[VDC] [A]
5.1
12
15
24
48
5.1
5.1
12
15
24
5.1
5.1
5.1
1
2
3
4
Output 2
V
o nom
I
o nom
[VDC] [A]
-
-
-
-
-
5.1
24
12
15
24
12
15
24
-
-
-
-
-
4.0
1.0
2.0
1.7
1.0
0.7
0.6
0.35
Output 3
V
nom
I
o nom
[VDC] [A]
-
-
-
-
-
-
-
-
-
-
12
15
24
-
-
-
-
-
-
-
-
-
-
0.7
0.6
0.35
Operating input voltage range and efficiency
V
i min
–
V
i max
28
–
140 VDC
CM1001-9RG
CM1301-9RG
CM1501-9RG
CM1601-9RG
CM1901-9RG
CM2001-9G
CM2060-9G
CM2320-9G
CM2540-9G
CM2660-9G
CM3020-9G
CM3040-9G
CM3060-9G
η
min1
[%]
74
80
82
82
82
-
-
79
80
-
76
76
76
V
i min
–
V
i max
44
–
220 VDC
DM1001-9RG
DM1301-9RG
DM1501-9RG
DM1601-9RG
DM1901-9R
DM2001-9G
DM2060-9G
DM2320-9G
DM2540-9G
DM2660-9G
DM3020-9G
DM3040-9G
DM3060-9G
η
min1
[%]
74
81
82
83
V
i min
–
V
i max
88
–
372 VDC
85
–
264 VAC
2
LM1001-9RG
LM1301-9RG
LM1501-9RG
LM1601-9RG
LM1901-9RG
LM2001-9G
LM2060-9G
LM2320-9G
LM2540-9G
LM2660-9G
LM3020-9G
LM3040-9G
LM3060-9G
η
min1
[%]
74
80
79
82
82
-
-
80
79
74
73
-
Options
8.0
4.0
3.4
2.0
1.0
4.0
4.0
2.0
1.7
1.0
5.0
5.0
5.0
-7,
E
4
, P
D0
–
D9
V0
–
V3
3
A, K, H
non-G
-7,
E
4
, P
D0 – D9
A, K, H
non-G
-7, E
4
, P
D0
–
D9, A
K, H, non-G
80
80
77
76
76
Min. efficiency at
V
i nom
and
I
o nom
. Typ. values are approx. 2% better.
Operating frequency range: 47 – 440 Hz; see
Safety and Installation Instructions
for > 60 Hz !
Option V0, V2, V3 available only for output 1 = 5.1 V (excludes option D)
Option E only available for CM and LM models (not for DM)
NFND: Not for new designs.
Preferred for new designs
BCD20018-G Rev AE, 15-Feb-2017
MELCHER
The Power Partners.
Page 2 of 26
M Series Data Sheet
50 Watt DC-DC and AC-DC Converters
Table 1c: EM and battery charger models
Output 1
V
o Bat
3
I
o nom
[VDC]
[A]
Same
V
o nom
and
I
o nom
as
DM models
12
24
36
48
60
1
2
3
4
Output 2
V
o max
[VDC]
-
-
-
14.15 – 14.6
28.3 – 29.15
42.45 – 43.72
56.6 – 58.3
70.75 – 72.87
V
o nom
[VDC]
I
o nom
[A]
Output 3
V
o nom
[VDC]
I
o nom
[A]
Operating input voltage range and efficiency
V
i min
–
V
i max
η
min 1
67
–
385 VDC [%]
-
-
-
-
-
-
-
-
V
i min
–
V
i max
η
min 1
88
–
372 VDC [%]
85
–
264 VAC
2
-
-
-
LM1781-9RD5G
LM1782-9RD5G
LM1783-9RD5G
LM1784-9RD5G
LM1785-9RD5G
-
-
-
79
81
82
81
81
Options
V
o safe
4
[VDC]
-
-
-
12.84
25.68
38.52
51.36
64.2
-
-
-
-
EM1xxx-9RG
same as DM models
-
-
EM2xxx-9RG
same as DM models same as DM models EM3xxx-9RG
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-7,
E, D, A
non-G
-7,
E, A
non-G
3.6
1.8
1.2
0.9
0.72
Min. efficiency at
V
i nom
and
I
o nom
. Typ. values are approx. 2% better.
Operating frequency range: 47 – 440 Hz; see
Safety and Installation Instructions
for > 60 Hz
V
o nom
for EM models
Setting voltage with open R-input (battery chargers)
NFND: Not for new designs.
Preferred for new designs
BCD20018-G Rev AE, 15-Feb-2017
MELCHER
The Power Partners.
Page 3 of 26
M Series Data Sheet
50 Watt DC-DC and AC-DC Converters
Part Number Description
C M 2 5 40 -9 E P D3 A H G
Operating input range
V
i
:
8 – 35 VDC
14 – 70 VDC
20 – 100 VDC
28 – 140 VDC
44 – 220 VDC
67 – 385 VDC
85 – 264 VAC, 88 – 372 VDC
................... A
................... B
................... F
................... C
................... D
................... E
................... L
Series ................................................................................... M
Number of outputs
4 .........................................................................
1, 2, 3
4
Output 1,
V
o1 nom
:
5.1 V
12 V
15 V
24 V
other voltages
48 V
............ 0, 1, 2
.................... 3
................ 4, 5
.................... 6
................ 7, 8
.................... 9
Single-output models (different specs.) ...................... 01 – 99
5.1 V ....................... 01 – 19
Outputs 2, 3:
V
o2 nom
,
V
o3 nom
:
12 V ........................ 20 – 39
15 V ........................ 40 – 59
24 V ........................ 60 – 69
other voltages and specs. ............ 21 – 99
Ambient temperature range
T
A
: –25 to 71 °C .................. -7
– 40 to 71 °C .................. -9
customer-specific ... -0, -5, -6, -8
Auxiliary functions and options:
Inrush current limitation (CM, EM, LM) ........................ E
Output voltage control input (single-output models) .... R
2
Potentiometers for adjustment of output voltages ....... P
2
Save data signal (D0 – D9, to be specified) ................ D
1
ACFAIL signal (V0, V2, V3, to be specified) ................ V
1
Output voltage test sockets .......................................... A
Increased electric strength test voltage ....................... H
Input fuse built-in (not accessible) ............................... F
3
Coding strip at the connector ....................................... K
RoHS-compliant for all 6 substances ........................... G
1
2
3
4
Option D excludes option V and vice versa
Feature R is fitted to single-output models only. Option P excludes option R (and vice versa).
Only for FM1000
Models with 220 mm case length. Just add 6000 to the standard model number, e.g., DM3020-9AG
→
DM9020-9AG.
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.
Example: CM2540-9EPD3AHG:
DC-DC converter, operating input voltage range
28 – 140 VDC, providing output 1 with 15 V/1.7 A and
output 2 with 15 V /1.7 A; temperature range –40 to
+71 °C, inrush current limitation, equipped with
potentiometers, undervoltage monitor D3, test
sockets, tested with higher voltage output to case,
RoHS-compliant for all 6 substances.
BCD20018-G Rev AE, 15-Feb-2017
MELCHER
The Power Partners.
Page 4 of 26
M Series Data Sheet
50 Watt DC-DC and AC-DC Converters
Functional Description
The input voltage is fed via an input fuse, an input filter, a bridge
rectifier, and an inrush current limiter to the input capacitor.
This capacitor sources a single-transistor forward converter.
Each output is powered by a separate secondary winding of the
main transformer. The resultant voltages are rectified and their
ripple smoothed by a power choke and an output filter. The
main control circuit senses the main output voltage
V
o1
and
generates, with respect to the maximum admissible output
currents, the control signal for the primary switching transistor.
This signal is transferred to the primary side by a coupling
transformer.
The auxiliary output voltages
V
o2
and
V
o3
are individually
regulated by means of secondary switching transistors. Each
auxiliary output's current is sensed using a current transformer.
If one of the outputs is driven into current limit, the other outputs
will reduce their output voltages as well, because all output
currents are controlled by the same main control circuit.
03009a
Option P
2
5
i
D, V
R
4
G
4
Main control circuit
14
17
C
Y
N
5
Vi+
29
Output 1
filter
20
23
Forward converter
approx. 70 kHz
1
2
C
Z
Control
circuit
output 2
5
14
Input filter
Output 2
filter
C
Z
L
5
Fuse
3
17
Vi–
32
Control
circuit
output 3
Output 3
filter
C
Y
8
11
26
1
2
3
4
5
Transient suppressor diode in AM, BM, CM, FM models.
Bridge rectifier in LM, series diode in EM models.
Inrush current limiter (NTC) in CM, DM, EM, LM models (option E: refer to the description of option E).
Single-output models with feature R.
LM-models
Fig. 1
Block diagram, triple-output models
BCD20018-G Rev AE, 15-Feb-2017
MELCHER
The Power Partners.
Page 5 of 26
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