Bel IMX15 15 watt dc-dc converter Datasheet

IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Features
• RoHS lead-free-solder and lead-solder-exempted
products are available.
• Wide input voltage ranges up to 150 VDC
• 1 or 2 isolated outputs up to 48 V
• 1500 to 3000 VAC I/O voltage withstand test
• Emissions EN 55022 level A
• Immunity to IEC/EN 61000-4-2,-3,-4,-5, and -6
40.6
1.6"
10.5
0.42"
• Fire&smoke as per EN 45545
51
2.0"
• High efficiency (typ. 86%)
• Input undervoltage lockout
• Shutdown input, adjustable output voltages
• Flex power: Flexible load distribution on outputs
• Outputs no-load, overload, and short-circuit proof
• Operating ambient temperature –40 to 85 °C
• Thermal protection
• 2" x 1.6" case with 10.5 mm profile
• Supplementary insulation: 20/40IMX15 models, double
or reinforced insulation: 110IMY15 models
Safety-approved to IEC 60950-1 and UL/CSA 60950 -1
2nd Edition
Description
1
The IMX15, IMS15, and IMY15 Series of board mountable
15 Watt DC-DC converters have been designed according to
the latest industry requirements and standards. The converters
are particularly suitable for use in mobile or stationary
applications in transport, railways, industry, or telecommunication, where variable input voltages or high transient
voltages are prevalent.
Covering a total input voltage range from 8.4 up to 150 V with
different models, the converters are available with single and
electrically-isolated double outputs from 3.3 up to 48 V,
externally adjustable, with flexible load distribution on doubleoutput models. A shutdown input allows for remote on/off.
1
110IMY15
models
outputs, even if the bus voltage at the converter input exceeds
the SELV-limit of 60 VDC. The 110IMY15 models provide
double insulation and are CE marked. They may be connected
to a rectified 110 VAC source without any further isolation
barrier.
The converters have been approved by CSA. 20IMS/20IMX15
and 40IMS/40IMX15 models provide supplementary insulation.
Connected to a secondary circuit, these models provide SELV
The circuitry is comprised of integrated planar magnetics. All
components are automatically assembled and solidly soldered
onto a single PCB without any wire connection. Magnetic
feedback ensures maximum reliability and repeatability in the
control loop over all operating conditions. Careful consideration of possible thermal stress ensures the absence of
hot spots providing long life in environments, where
temperature cycles are frequent. The thermal design allows
operation at full load up to an ambient temperature of 71 °C in
free air without using any potting material. For extremely high
vibration environments the case has holes for screw mounting.
Table of Contents
Page
Description ............................................................................. 1
Model Selection ..................................................................... 2
Functional Description ........................................................... 4
Electrical Input Data ............................................................... 5
Electrical Output Data ............................................................ 8
Auxiliary Functions ............................................................... 13
Page
Electromagnetic Compatibility (EMC) .................................. 14
Immunity to Environmental Conditions ................................ 16
Mechanical Data .................................................................. 17
Safety and Installation Instructions ...................................... 18
Description of Options ......................................................... 19
Accessories .......................................................................... 19
Features include efficient input and output filtering and
consistently high efficiency over the entire input voltage range,
high reliability, and excellent dynamic response to load and line
changes.
Copyright © 2017, Bel Power Solutions Inc. All rights reserved.
MELCHER
BCD20008-G Rev AE, 25-Aug-2017
The Power Partners.
Page 1 of 19
IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Model Selection
Table 1: Model Selection
Output 1
Vo nom
Io nom 1
[VDC]
[A]
1
2
3
4
5
6
SR
Output 2
Vo nom
I o nom 1
[VDC]
[A]
Output
power
P o nom [W]
Input voltage
Vi min to Vi max
[VDC]
Efficiency
η typ 6
ηmin 6
[%]
[%]
Model
Options 2
3.3
3.3
3.3
3.3
4.5
4.0
4.5
4.5
-
-
14.9
13.2
14.9
14.9
8.4 to 36 5
16.8 to 75 3
16.8 to 75 3
50 to 150 4
80
78
81
77
82
80
83
79
20IMX15-03-8RG-G SR
40IMX15-03-8RG
40IMX15-03-8RG-G SR
110IMY15-03-8RG-G SR
i, Z, non-G
non-G
i, Z, non-G
i, Z, non-G
5.1
5.1
5.1
3.5
3.5
3.5
-
-
17.5
17.5
17.5
8.4 to 36 5
16.8 to 75 3
50 to 150 4
83
85
79.5
86
87
82
20IMX15-05-8RG-G SR
40IMX15-05-8RG-G SR
110IMY15-05-8RG-G SR
i, Z, non-G
i, Z, non-G
i, Z, non-G
5.1
5.1
5.1
5.1
2.3
2.7
2.5
2.5
-
-
11.7
13.8
12.8
12.8
8.4 to 36 5
14 to 36
16.8 to 75 3
50 to 150 4
82
81.5
81.5
78
84
84
83
81
20IMX15-05-8RG
24IMS15-05-9R
40IMX15-05-8RG
110IMY15-05-8RG
Z, non-G
--Z, non-G
5.1
5.1
5.1
5.1
5.1
1.35
1.6
1.5
1.6
1.5
3.3
3.3
3.3
3.3
3.3
1.35
1.6
1.5
1.6
1.5
11.3
13.5
12.6
13.5
12.6
8.4 to 36 5
14 to 36
16.8 to 75 3
36 to 75
50 to 150 4
82
81
82
79
79
84
83
84
82
82
20IMX15-0503-8RG
24IMS15-0503-9R
40IMX15-0503-8RG
48IMS15-0503-9R
110IMY15-0503-8RG
i, Z, non-G
-i, Z, non-G
-i, Z, non-G
5
5
5
5
1.3
1.4
1.4
1.4
5
5
5
5
1.3
1.4
1.4
1.4
13.0
14.0
14.0
14.0
8.4 to 36 5
14 to 36
16.8 to 75 3
50 to 150 4
82
81
81
80
85
84
84
82
20IMX15-05-05-8G
24IMS15-05-05-9
40IMX15-05-05-8G
110IMY15-05-05-8G
i, Z, non-G
-i, Z, non-G
i, Z, non-G
12
12
12
12
0.65
0.7
0.7
0.7
12
12
12
12
0.65
0.7
0.7
0.7
15.6
16.8
16.8
16.8
8.4 to 36 5
14 to 36
16.8 to 75 3
50 to 150 4
83
83
84
82
86
86
87
85
20IMX15-12-12-8G
24IMS15-12-12-9
40IMX15-12-12-8G
110IMY15-12-12-8G
i, Z, non-G
-i, Z, non-G
i, Z, non-G
15
15
15
15
0.5
0.56
0.56
0.56
15
15
15
15
0.5
0.56
0.56
0.56
15.0
16.8
16.8
16.8
8.4 to 36 5
14 to 36
16.8 to 75 3
50 to 150 4
85
83
83
82
88
86
86
85
20IMX15-15-15-8G
24IMS15-15-15-9
40IMX15-15-15-8G
110IMY15-15-15-8G
i, Z, non-G
-i, Z, non-G
i, Z, non-G
24
24
24
24
0.32
0.35
0.35
0.35
24
24
24
24
0.32
0.35
0.35
0.35
15.4
16.8
16.8
16.8
8.4 to 36 5
14 to 36
16.8 to 75 3
50 to 150 4
83
84
84
82
86
87
86
85
20IMX15-24-24-8G
24IMS15-24-24-9G
40IMX15-24-24-8G
110IMY15-24-24-8G
i, Z, non-G
non-G
i, Z, non-G
i, Z, non-G
Flexible load distribution on dual and double outputs possible; up to 75% of the total output power Po nom on one of the 2 outputs.
IMX/IMY15-0503 models have reduced load distribution flexibility; 1.8 A max. on one of the 2 outputs. The total output power should not
exceed Po nom.
See Description of Options.
Short-time operation down to Vi = 14.4 V possible (Po reduced to approx. 85% of Po nom)
Short-time operation down to Vi = 43.2 V possible (Po reduced to approx. 85% of Po nom) and up to 154 V
Initial start-up at 9 V, main output voltage regulation down to 8.4 V
Efficiency at TA = 25 °C, Vi nom, I o nom.
Models with synchronos rectifier. For the RoHS version of such models, add -G !
Preferred for new designs.
NFND Not for new designs. Replace 24IMS15 models by 20IMX15 and 48IMS15 by 40IMX15;
Replace 20IMX15-05, 40IMX15-05, 110IMY15-05 by models with synchronos rectifier SR;
for new designs, chose always the RoHS version !
MELCHER
BCD20008-G Rev AE, 25-Aug-2017
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Page 2 of 19
IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
RoHS-Compliant Models
The type designation of RoHS-compliant models (compliant for the restriction of all six substances) for the IMX/IMY15 Series ends
with "G".
However, in single-output models with 3.3 V or 5.1 V output an extra hyphen (-) is added after the existing "G", which already
signifies a synchronous rectifierSR. This is an exception to our normal nomenclature to identify this type of product, since G is
already used to designate products for higher output current fitted with a synchronous rectifier. Some examples
– 20IMX15-05-8R-G designates a standard version with RoHS compliance for all six substances.
– 20IMX15-05-8RG designates a synchronous rectifierSR version which is not RoHS-compliant.
– 20IMX15-05-8RG-G designates a synchronous rectifierSR version and RoHS compliant for all six substances.
– 20IMX15-05-05-8G designates a double-output model with RoHS compliance for all six substances
– 110IMY15-24-24-8RG designates a double-output model with RoHS compliance for all six substances.
Part Number Description
40 IMX15 - 05 - 8 R G Z -G
xxix
Input voltage range Vi
8.4 to 36 V ...................................................... 20
14 to 36 V ....................................................... 24
16.8 to 75 V .................................................... 40
36 to 75 V ....................................................... 48
50 to 150 V ................................................... 110
Series
IMX15, IMS15, IMY15
Output voltage of output 1 ............................ 03, 05, 12, 15, 24
Hyphen designating double-output models with two
electrically isolated outputs ............................... -
1
Output voltage of output 2 ............................ 03, 05, 12, 15, 24
Operating ambient temperature range TA
– 40 6 to 85 °C .................................................. -8
– 40 to 71 °C ..................................................... -9
Options and features:
R input and magnetic feedback ....................... R
Synchronous rectification ................................ G
Inhibit ................................................................. i
Open frame ...................................................... Z
RoHS-compliant for all 6 substances ........ G or -G
1
2
3
4
5
6
6
2
3
4
5
Not applicable to -0503 models. They have a common ground.
IMS15 models are not recommended for new designs.
Standard for single-output and -0503 models
Option i replaces the standard shutdown function; see Description of Options.
RoHS models with synchronous rectifier end as an exception with -G.
Only –25 °C for older -8RGSR models (Rev. < BA); see table 7a.
Note: The sequence of options must follow the order above !
Examples: 20 IM X15-05-05-8G: DC-DC converter, input 9 to 36 V, 2 galvanically isolated outputs each providing 5 V, 1.3 A,
RoHS-compliant
110 IMY15-0503-8RG: DC-DC converter, input 50 to 150 V, 2 outputs with common return providing +5.1 V, 1.5 A and
+3.3 V, 1.5 A, RoHS-compliant. Converter fitted with magnetic feedback for tight output voltage regulation.
Product Marking
The converters without option Z are marked with basic type designation, input and output voltages and currents, applicable safety
approval and recognition marks, patent nos., company logo, date code, and serial number.
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Page 3 of 19
IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
03089a
Functional Description
The IMX15/IMS15/IMY15 Series of DC-DC converters are
magnetic feedback-controlled flyback converters using current
mode PWM (Pulse Width Modulation). The -05- and -0503output voltage models exhibit an active magnetic feedback
loop via a pulse transformer, resulting in very tight regulation of
the output voltage (see the block diagrams). The output
voltages of these models can be adjusted via the
R-input. The R-input is referenced to the secondary side and
allows for programming the output voltages in the range of
approximately 80 to 105% of Vo nom, using either an external
resistor or an external voltage source.
Vi+ 1
SD 4
Current limitation is provided by the primary circuit, thus limiting
the total output power of double-output models. The shutdown
input allows remote converter on/off.
Overtemperature protection will disable the converter under
excessive overload conditions with automatic restart.
03039a
Vi+ 1
15 Go
PWM
n.c. 3
11 Vo2+
Vi – 2
12 Go
2 x 2200 pF
Several single-output models with 3.3 or 5.1 V output exhibit a
synchronous rectifier to improve the efficiency.
The voltage regulation on the double-output models is
achieved with an auxiliary winding of the main transformer. The
output voltages can be adjusted via the Trim input, which is
referenced to the primary side and allows for programming the
output voltage in the range of 100 to 105% of Vo nom via an
external resistor, or within 75 to 105% if using an external
voltage source. The load regulation output characteristic allows
for paralleling of one or more double-output models with equal
output voltage.
13 Vo1+
17 R
Fig. 2
Block diagram of -0503-models
03090a
Vi+ 1
11 Vo1+
SD 4
12 Vo1–
PWM
Trim 3
13 Vo2+
Vi – 2
15 Vo2–
13 Vo+
2 x 2200 pF
17 n.c.
Fig. 3
Block diagram of double-output models
PWM
SD 4
15 Vo–
n.c. 3
2 x 2200 pF
1500 V
Vi– 2
17 R
Fig. 1
Block diagram of single-output models
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IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Electrical Input Data
General conditions:
– TA = 25 °C, unless TC is specified.
– Shut-down pin left open-circuit.
– Trim or R input left open-circuit.
Table 2a: Input data of IMX15 and IMY15 models
Input
20IMX
Characteristics
range 1
Conditions
min
9 5, 7
Vi
Input voltage
Vi nom
Nominal input voltage
TA min – TA max
Io = 0 – Io nom
Vi sur
Repetitive surge voltage
Abs. max input (3 s)
t startup
Converter
Switch on
start-up time 2
SD high
Worst case condition at
Vi min, Io = Io nom
t rise
Rise time
2
typ
40IMX
max min
36
20
typ
110IMY
max min
16.8 5, 6
75
40
40
0.25
0.5
5
Io nom, capac. load
10
150 8
100
0.25
0.5
V
168
0.5
0.1
5
20
max
110
0.1
Vi nom, resistive load
typ
50 5
Unit
10
0.8
0.1
5
20
s
10
ms
20
Ii o
No-load input current
Io = 0, Vi min – Vi max
65
45
15
mA
I irr
Reflected ripple current
Io = 0 – Io nom
30
30
20
mApp
I inr p
Inrush peak current 3
Vi = Vi nom
Ci
Input capacitance
for surge calculation
VS–D–
Shut-down voltage
R S–D–
Shut-down input resistance
I ––
Input current, when
disabled
Vi min – Vi max
SD connected to Vi–
fs
Switching frequency
Vi min – Vi max,
Io = 0 – Io nom
Vi RFI
Input RFI level conducted
EN 55032 4
SD
1
2
3
4
5
6
7
8
8
9
10
A
1.5
0.75
0.35
µF
Converter disabled
–10 to 0.7
–10 to 0.7
–10 to 0.7
V
Converter operating
open or 2 – 20
open or 2 – 20
open or 2 – 20
approx. 10
approx. 10
approx. 10
10
3
kΩ
1
approx. 300
approx. 300
approx. 300
A
A
A
mA
kHz
If Vo is set above Vo nom by use of the R or Trim input, Vi min will be proportionately increased.
Measured with resistive and max. admissible capacitive load. Valid for models with rev. AI or greater.
Source impedance according to ETS 300132-2, version 4.3.
Measured with a ceramic capacitor C i directly across input; output lead length 0.1 m, leads twisted. Double-output models with both
outputs in parallel. C i is specified in table 11.
Input undervoltage lockout at typ. 80% of Vi min.
Short time operation down to Vi min >14.4 V possible. Po reduced to approx. 85% of Po nom.
Initial start-up at Vi = 9 V, main output voltage regulation down to 8.4 V
Short time operation up to 154 V possible for 2 s.
MELCHER
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IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Table 2b: Input Data of IMS15 models; general conditions as in table 2a
Input
24IMS
Characteristics
Conditions
min
14
Vi
Input voltage range 1
Vi nom
Nominal input voltage
TA min – TA max
Io = 0 – Io nom
Vi sur
Repetitive surge voltage
Abs. max input (3 s)
t startup
Converter
Switch on
start-up time 2
SD high
Worst case condition at
Vi min, Io = Io nom
Rise time
t rise
2
typ
36
24
0.5
10
20
40
10
20
30
I inr p
Inrush peak current 3
Vi = Vi nom
Ci
Input capacitance
for surge calculation
VS–D–
Shut-down voltage
R S–D–
Shut-down input resistance
I ––
Input current, when
disabled
Vi min – Vi max
SD connected to Vi–
fs
Switching frequency
Vi min – Vi max,
Io = 0 – Io nom
Vi RFI
Input RFI level conducted
EN 55022 4
s
0.1
20
20
V
100
0.25
5
Io = 0 – Io nom
5
0.5
10
Io = 0, Vi min – Vi max
4
75
48
Io nom, capac. load
Reflected ripple current
3
36
Unit
max
Vi nom, resistive load
No-load input current
2
typ
0.1
Ii o
1
min
50
0.25
I irr
SD
48IMS
max
5
ms
30
5
mA
mApp
4.5
A
4
2
µF
Converter disabled
–10 to 0.7
–10 to 0.7
V
Converter operating
open or 2 – 20
open or 2 – 20
approx. 10
approx. 10
1.2
3
1.2
approx. 300
approx. 300
A
A
kΩ
3
mA
kHz
If Vo is set above Vo nom by use of the R or Trim input, Vi min will be proportionately increased.
Measured with resistive and max. admissible capacitive load.
Source impedance according to ETS 300132-2, version 4.3.
Measured with a ceramic capacitor C i directly across input; output lead length 0.1 m, leads twisted. Double-output models with both
outputs in parallel. C i is specified in table 11.
Input undervoltage lockout at typ. 80% of Vi min.
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IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Inrush Current
Model
The inrush current has been made as low as possible by
choosing a very small input capacitance. A series resistor may
be installed in the input line to further reduce this current.
20IMX15
F 4.0 A
24IMS15
F 3.15 A
A
Fuse type
40IMX15, 48IMS15
F 2.0 A
110IMY15
F 1.0 A
04022b
4
3
Input Transient Voltage Protection
2
A built-in suppressor diode provides effective protection
against input transients, which typically occur in many
installations.
1
0
20
60
40
t
100 µs
80
Table 5: Built-in transient voltage suppressor
Type
Fig. 4
Typical inrush current at Vi nom, Po nom versus time
(40IMX15). Source impedance according to
ETS 300132-2 at Vi nom .
Vo
trise
Vo nom
04008b
Peak power
at 1 ms
Pp [W]
Peak pulse
current
Ipp [A]
20IMX15
40
1500
22
24IMS15
53
600
7.7
40IMX15
100
1500
9.7
48IMS15
100
600
4.1
110IMY15
168
600
0.5
For very high energy transients as for example to achieve
compliance to IEC/EN 61000-4-5 (see table Electromagnetic
Immunity), an external inductor and a capacitor are required,
see Fig. 6. The components are specified in table 6.
t
tstartup
Breakdown
voltage
VBr nom [V]
Fig. 5
Converter start-up and rise time
L
JM234
Vi+
Input Undervoltage Lockout
A special feature of these converters is the accurate
undervoltage lockout protection, which protects against large
currents caused by operation at low voltages. This ensures
easier start-up in distributed power systems.
C
+
C
20IMX15
40IMX15
110IMY15
+
Vi–
Tab. 3: Turn on and turn off voltage
Model
Turn on
min
Turn off
max
Fig. 6
Example for external circuitry to achieve better transient
immunity. Values of components in the table below.
Unit
min
max
20IMX15
7.5
8
7
7.5
24IMS15
12.5
13.5
12
13
40IMX15
12.5
13.5
12
13
48IMS15
31.5
32.5
31
32
110IMY15
40
42.5
38
40.5
V
Table 6:
Components for external circuitry for IEC/EN 61000-4-5,
level 3 compliance.
Fuse and Reverse Polarity Protection
The built-in suppressor diode also provides for reverse polarity
protection at the input by conducting current in the reverse
direction. An external fuse is required to limit this current.
Model
Inductor (L)
Capacitor (C)
20IMX15
220 µH, 2.7 A
2 x 330 µF, 63 V
24IMS15
220 µH, 1.3 A
2 x 330 µF, 63 V
40IMX15
220 µH, 1.3 A
2 x 330 µF, 100 V
48IMS15
220 µH, 1 A
2 x 330 µF, 100 V
110IMY15
220 µH, 0.4 A
2 x 330 µF, 200 V
Table 4: Recommended external fuses
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Page 7 of 19
IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Electrical Output Data
We recommend connecting an external 1 µF ceramic capacitor across the output pins.
General conditions:
– TA = 25 °C, unless TC is specified
– Shutdown pin and Trim or R pin left open-circuit (not connected)
Table 7a: Output data for single-output models -03-8RG 1 and 05-8RG 1
Output
3.3 V
Characteristics
Conditions
min
Vo
Output voltage
Vi nom
Io = 0.5 Io nom
3.25
Io nom
Output current
20IMX Vi min to Vi max
40IMX /110IMY
Io L
Current limit 2
Vi nom, TC = 25 °C
Vo ≤ 93% Vo nom
∆Vo
Line/load regulation
Vi min to Vi max,
(0.1 to 1) Io nom
Vo
Output voltage noise
Vi min to Vi max
Io = I o nom
Output overvoltage limit. 3
Vo L
Co ext
Admissible capacitive load
Vo d
Dynamic
load
regulation
to d
αVo
1
2
3
4
5
6
Voltage deviat.
Recovery time
Temperature coefficient
∆Vo /∆TC
typ
max
min
3.35
5.05
typ
3.5
4.5
3.5
6.0
4.6
4
5
V
A
±0.5
%
100
100
mVpp
60
60
4000
6
±250
Vi min to Vi max
(0.1 to 1) Io nom
max
±0.5
130
0
Unit
5.15
4.5
115
Vi nom
Io nom ↔ 1/2 Io nom
IEC/EN 61204
5.1 V
115
130
0
4000 6
%
±250
µF
mV
1
1
ms
±0.02
±0.02
%/K
SR
Models -8RG (synchr. rectifier) have a minimum case and operating temperature of –25 °C. If the revision is BA (or later), it is –40 °C.
The current limit is primary side controlled. In the event of a sustained overload condition the thermal protection may cause the converter
to shut down (restart after cooling down).
The overvoltage protection is via a primary side second regulation loop. It is not tracking with R control.
BW = 20 MHz
Measured with a probe according to EN 61204
Co ext is limited to 3000 µF, if Vi >125 V or TA < 25 °C
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IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Table 7b: Output data for -05-8R and -0503-8R models; general conditions as in table 7a
Output
5.1 V
Characteristics
Conditions
min
Vo , Vo1 Output voltage
Vo2
Vi nom
Io = 0.5 Io nom
5.05
Io nom
typ
5.1/3.3 V
max
min
5.15
5.0
3.13
typ
2.7
2 × 1.6
2.0
2.5
2 × 1.5
1.8 4
3.2
2.7
3.8
20IMX Vi nom
Vo1 ≤ 93% Vo nom
3.0
3.8
IoL/Io1L
Io2L
40IMX/110IMY
3.6
2.9
4.0
Line/load regulation
5.1 V Vi min – Vi max,
(0.1 – 1) Io nom
5.1 V
±0.5
Output voltage noise
Output overvoltage limit 7
Co ext
Admissible capacitive load
Vo d
Dynamic
load
regulation
1
2
3
4
5
6
7
Vi min – Vi max
Io = Io nom
Voltage deviat.
Recovery time
Temperature coefficient
∆Vo/∆TC
4
–
%
–
+3 / –5
–
±4.5
5
70
80
6
40
40
3.3 V
αVo
A
24IMS/48IMS
3.5
to d
1.6 4
40IMX/110IMY
24IMS/48IMS
Vo L
V
2 × 1.35
20IMX Vi min – Vi max
IoL, Io1L
Io2L
Vo1/2
5.12
3.46
2.3
Output current 1
IoL, Io1L Current limit 2
Io2L
∆Vo
Unit
max
115
0
130
4000
mVpp
115
130
0
4000 3
%
µF
Vi nom
Io nom ↔ 1/2 Io nom
IEC/EN 61204
±250
±150
mV
1
1
ms
Vi min – Vi max
(0.1 – 1) Io nom
±0.02
±0.02
%/K
Flexible load distribution: Io max for one of the 2 outputs; however the total load should not exceed Po nom specified in the table Model
Selection.
The current limit is primary-side controlled.
For -0503-models: total capacitive load of both outputs.
For -0503-models: Conditions for specified output. Other output loaded with constant current Io = 0.5 Io nom.
BW = 20 MHz
Measured with a probe according to EN 61204
The overvoltage protection is via a primary side second regulation loop. It is not tracking with R control.
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IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
able 7c: Output data for double-output models; general conditions as in table 7a
2×5V
Output
Characteristics
min
5.05 11.88
12.12 14.85
15.15 23.70
24.30
4.95
5.05 11.90
12.10 14.88
15.12 23.80
24.20
4.94
5.06 11.84
12.16 14.80
15.20 23.64
24.36
5.06 11.88
12.12 14.85
15.15 23.75
24.25
Vo2
Output 2
24IMS/48IMS
other models
4.94
Io nom
Output current
20IMX
Vi min – Vi max
other models
Current limit 2, 4
IoL
20IMX
24IMS/48IMS
Vi nom
Vo1 ≤ 93% Vo nom
40IMX/110IMY
∆Vo1
Line/load regulation 8 output 1
∆Vo2
output 2
Vo1/2
Output voltage noise
Output overvoltage limit 7
Co ext
Admissible capacitive load 3
Vo d
Dynamic
load
regulation
αVo
1
2
3
4
5
6
7
8
8
Voltage deviat.
Recovery time
Temperature coefficient
∆Vo /∆TC
min typ max
2 × 1.3
2 × 0.65
2 × 0.50
2 × 0.32
2 × 1.4
2 × 0.70
2 × 0.56
2 × 0.35
3.0
1.6
1.3
0.85
3.5
1.9
1.6
0.95
3.2
1.7
1.4
0.90
±1
±1
±1
±1
%
±3
±3
±3
±3
5
80
120
150
240
6
40
60
70
120
Min. load 1%
115
0
Vi nom
Io nom ↔ 1/2 Io nom
Vi min – Vi max
(0.1 – 1) Io nom
V
A
Vi nom, (0.1 – 1) Io nom
Vi min – Vi max
Io = Io nom
Vo L
to d
Vi min – Vi max, Io nom
typ max min typ max
Unit
4.95
24IMS/48IMS
1
2 × 24 V
Conditions
Output 1
typ max min
2 × 15 V
Vi nom
Io = 0.5 Io nom
Vo1
other models
2 × 12 V
mVpp
130 115
130
115
130
115
130
%
4000
680
0
470
0
180
µF
0
±250
±300
1
±0.02
±300
±600
mV
1
1
1
ms
±0.02
±0.02
±0.02
%/K
Flexible load distribution: Each output of double-output models is capable of delivering 75% of the total output power; however the total
load should not exceed Po nom specified in the table Model Selection.
The current limit is primary-side controlled.
Measured with both outputs connected in parallel.
Conditions for specified output. Other output loaded with constant current Io = 0.5 Io nom .
BW = 20 MHz
Measured with a probe according to EN 61204
The overvoltage protection is via a primary side second regulation loop, not tracking with Trim or R control.
At start-up occurs a short overshoot at the output.
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IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Thermal Considerations
Short Circuit Behavior
If a converter, mounted on a PCB, is located in free, quasistationary air (convection cooling) at the indicated maximum
ambient temperature TA max (see table Temperature
specifications) and is operated at its nominal input voltage and
output power, the case temperature measured at the
measuring point of case temperature TC (see Mechanical
Data) will approach the indicated value TC max after the warmup phase. However, the relationship between TA and TC
depends heavily on the conditions of operation and integration
into a system. The thermal conditions are influenced by input
voltage, output current, airflow, temperature of surrounding
components and surfaces, and the properties of the printed
circuit board. TA max is therefore only an indicative value.
The current limit characteristic shuts down the converter,
whenever a short circuit is applied to its output. It acts selfprotecting, and automatically recovers after removal of the
overload condition (hiccup mode).
Caution: The case temperature TC measured at the measuring
point of case temperature TC (see Mechanical Data) may under no
circumstances exceed the specified maximum value. The installer
must ensure that under all operating conditions TC remains within
the limits stated in the table Temperature specifications.
JM017
1.0
0.5 m/s = 100 LFM
0.6
0.4
0.2
60
overload condition
100
switch-off
05041c
70
0
0.3 s
t
Both outputs of the same converter with equal voltage (e.g. 5 V
/ 5 V) can be connected in parallel and will share their output
currents equally. Parallel operation of single or double outputs
of two or more converters with the same output voltage may
cause start-up problems at initial start-up. This is only advisable
in applications, where one converter is able to deliver the full
load current as, for example, required in true redundant
systems.
natural cooling
40
Vo [%]
can be connected in series without any precautions, taking into
consideration that the highest output voltage should remain
below 42 V to ensure that the output remains SELV.
0.8
20
The outputs of one or several single- or double-output models
Fig. 8
Overload switch-off (hiccup mode); typical values
Po /Po max
0
Parallel and Series Connection
80
100
°C
TA
Fig. 7
Maximum output power versus ambient temperature
Note: If the 2nd output of double-output models (except 0503) is not
used, connect it in parallel to the 1st output.
Overtemperature Protection
The converters are protected from possible overheating by
means of an internal temperature monitoring circuit. It shuts
down the converter above the internal temperature limit, and
attempts to automatically restart in short intervals. This feature
helps protect against excessive internal temperatures, which
could occur during heavy overload conditions.
Typical Performance Curves
General conditions:
– TA = 25 ºC, unless TC is specified.
– Shutdown pin left open-circuit.
– Trim or R input not connected.
V
5.5
Output Overvoltage Protection
The output of single-output models as well as -0503- and -0505-models are protected against overvoltage by a second
control loop. In the event of an overvoltage on one of the
outputs, the converter will shut down and attempt to restart in
short intervals.
Doubel-output models (except -0503- and -05-05-models) are
protected against overvoltage by a Zener diode across the
second output. Under worst case conditions the Zener diode
will become a short circuit. Since with double-output models
both outputs track each other, the protection diode is only
provided in one of the outputs. The main purpose of this
feature is to protect against possible overvoltage, which could
occur due to a failure in the control logic. This protection circuit
is not designed to withstand externally applied overvoltages.
05166a
5.0
4.5
4.0
3.5
3.0
0
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
4 A
Fig. 9
Vo versus Io (typ) of converters with Vo = 5.1 V
(110IMY15-05-8R)
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IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
%
V
05020a
13
05168a
90
Vi min
12
80
11
Vi nom
10
Vi max
70
9
8
7
0
0.2
0.4
0.6 0.8 1.0 1.2 1.4 1.6 1.8 A
60
0.25
Io
Fig. 10
Vo versus Io (typ.) of double-output models (2 x 12 V), with
both outputs in parallel (110 IMY15-12-12-8)
1 Po/Po nom
0.75
Fig. 12b
Efficiency versus input voltage and load. Typical values
(110IMY15-12-12-8)
%
V
13.5
05021a
05040a
90
13
12.5
0.5
Vi nom
Vi max
Vi min
80
Io2 = 0.035 A
70
12
Io2 = 0.35 A
60
11.5
11
0.3
0.2
0.1
0.4
0.5
0.6
0.7 A
Io1
Fig. 11
Cross load regulation Vo1 versus Io1 (typ.) for various Io2
(2 x 12 V).
%
90
0.5
0.25
1 Io1/Io1 nom
0.75
Fig. 12c
Efficiency versus input voltage and load. Typical values
(48IMS15-12-12-9)
V
05167a
Vi min
50
05039-X15b
Vi nom
14
13
80
Vi max
Vo2
Vo1
12
70
60
0.25
11
10
0.5
0.75
1 Po/Po nom
Fig. 12a
Efficiency versus input voltage and load. Typical values
(40IMX15-12-12-8).
0
0.25
0.5
0.75
1
1.25
1.5
Io1/Io1 nom
Fig. 13
Flexible load distribution on double-outputs models with
option R (110IMY15-12-12-8R):
Load variation from 0 to 150% of Io1 nom on output 1;
output 2 loaded with 50% of Io2 nom.
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IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
a) Adjustment by means of an external resistor Rext.
Auxiliary Functions
Shutdown Function
Depending upon the value of the required output voltage,
the resistor shall be connected:
The outputs of the converters may be enabled or disabled by
means of a logic signal (TTL, CMOS, etc.) applied to the shutdown pin. If this function is not required, the shut-down pin
should be left open-circuit.
either: Between the R pin and Vo– to achieve an output
voltage adjustment range of Vo ≈ 80 to 100 % of Vo nom.
Vo
Rext1 ≈ 4 kΩ • –––––––––
Vo nom – Vo
• Converter operating:
2.0 to 20 V
• Converter disabled:
–10 to +0.7 V
or: Between the R pin and Vo+ to achieve an output voltage
range of Vo ≈ 100 to 105 % of Vo nom.
(Vo – 2.5V)
Rext2 ≈ 4 kΩ • ––––––––––––––––––
2.5 V • (Vo/Vo nom – 1)
Adjustable Output Voltage
• R input for single-output models and -0503-models
• Trim input for double-output models
As a standard feature, the single- and double-output models
offer adjustable output voltage(s) by using the control input R or
Trim. If the control input is left open-circuit, the output voltage is
set to Vo nom. For output voltages Vo > Vo nom, the minimum input
voltage Vi min (see Electrical Input Data) increases
proportionally to Vo/Vo nom.
Single-output models with synchronous rectifier (G):
The R input is referenced to the secondary side of the
converter. Adjustment of the output voltage is possible by
means of an external resistor connected between the R pin and
either Vo+ or Vo–.
Note: For models with synchronous rectifier the logic for Vo
adjustment differs from other models with R input.
b) Adjustment by means of an external voltage Vext
between Vo– and R pin.
The control voltage range is 1.96 to 2.62 V and allows for
adjustment in the range of Vo ≈ 80 to 105% of Vo nom.
Vo • 2.5 V
Vext ≈ ––––––––
Vo nom
Attempting to adjust the output below this range will cause
the converter to shut down (hiccup mode).
Note: Applying an external control voltage >2.75 V may damage
the converter.
06029e
Vi+
Vo+
06131
Vi+
R
+
Vo+
Rext 2
4 kΩ
Vref = 2.5 V
Control
logic
Rext1
+
–
Vo–
Vi–
Vext
Rext1
R
Rext2
Vi–
Fig. 15
Output voltage control for single-output models, -0503-models,
and double-output models by means of the R input.
Vo–
Fig. 14
Output voltage control for single-output models with
synchronous rectifier.
Double-output models with Trim input:
Table 8: Vo versus Vext approximate values
Vo nom
[V]
3.3
5.1
Typ. values of Rext1
Ω]
Vo [% of Vo nom] Rext1 [kΩ
90
95
100
90
95
100
Typ. values of Rext2
Ω]
Vo [% of Vo nom] Rext2 [kΩ
0.47
2.7
∞
3.3
8.2
∞
100
105
110
100
105
110
The Trim input is referenced to the primary side. The figure
below shows the topology. Adjustment is possible trough either
an external resistor or an external voltage source Vext.
06089a
∞
15
6.8
Vi+
Vo1+
Trim
Vo1–
+
∞
9.1
3.9
Vext
–
Rext
Vi–
Control
circuit
Vref 2.5 V
Vo2+
Vo2–
All other models fitted with R-input:
The R input is referenced to the secondary side of the
converter. Adjustment of the output voltage is possible by
means of either an external resistor or a voltage source.
Fig. 16
Output voltage control for double-output models (with Trim
input) by means of the Trim input.
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IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
a) Adjustment by means of an external resistor Rext:
b) Adjustment by an external voltage source Vext:
Programming of the output voltage by means of an external
resistor Rext is possible within 100 to 105% of Vo nom. Rext
should be connected between the Trim pin and Vi–.
Connection of Rext to Vi+ may damage the converter. The
table below indicates suitable resistor values for typical
output voltages under nominal conditions (Vi nom, Io = 0.5
Io nom) with either parallel-connected outputs or equal-load
conditions on both outputs.
For programming the output voltage in the range 75 to
105% of Vo nom, a source Vext (0 to 20 V) is required,
connected between the Trim pin and Vi–. The table below
indicates values Vo versus Vext (nominal conditions Vi nom, Io
= 0.5 Io nom), with either parallel-connected outputs or equal
load conditions on both outputs. Applying a control voltage
>20 V will set the converter into a hiccup mode. Direct
paralleling of the Trim pins of parallel connected converters
is possible.
Table 9a: Rext for Vo > Vo nom;
approximate values (Vi nom, Io1, 2 = 0.5 Io1/2 nom )
Vo [% Vo nom ]
Ω]
Rext [kΩ
105 to 108 (107 typically)
105
104
103
102
101
100
0
1.5
5.6
12
27
68
∞
Table 9b: Vo versus Vext for Vo = 75 to 105% Vo nom;
typical values (Vi nom, Io1/2 = 0.5 Io1/2 nom)
Vo [% Vo nom ]
Vext [V]
≥105
0
1.6
4.5
9
13
102
95
85
75
Electromagnetic Compatibility (EMC)
A suppressor diode together with an input filter forms an
effective protection against high input transient voltages, which
typically occur in many installations, but especially in batterydriven mobile applications.
Electromagnetic Immunity
Table 10: Immunity type tests
Phenomenon
Standard
Class
Level
Coupling
mode 2
Value
applied
Waveform
Source
Imped.
Test
procedure
In
oper.
Perf.
crit. 3
Electrostatic
discharge
to case
IEC/EN
61000-4-2
2
contact discharge
(R pin open)
4000 Vp
1/50 ns
330 Ω
150 pF
yes
B
3
air discharge
(R pin open)
8000 Vp
10 positive and
10 negative
discharges
Electromagnetic
field
IEC / EN
61000-4-3
x5
36
antenna
20 V/m 5
3 V/m 6
AM 80%
1 kHz
n.a.
80 to 1000 MHz
yes
A
ENV 50204
3
antenna
10 V/m
PM, 50% duty
cycle, 200 Hz
repetition frequ.
n.a.
900 MHz
yes
A
Electrical fast
transients/burst
IEC / EN
61000-4-4
34
direct +i/–i
2000 Vp 4
bursts of 5/50 ns
5 kHz rep. rate
transients with
15 ms burst
duration and a
300 ms period
50 Ω
60 s positive
60 s negative
transients per
coupling mode
yes
A
Surges
IEC/EN
61000-4-5
2
31
+i/–i
1000 Vp
2000 Vp 1
1.2/50 µs
2Ω
18 µF
5 pos. and 5 neg.
surges
yes
B
RF conducted
immunity
IEC/EN
61000-4-6
3
26
+i/–i
10 VAC
3 VAC 6
AM modulated
80%, 1 kHz
0.15 to 80 MHz
yes
A
1
2
3
4
5
6
150 Ω
External components required; see Fig. 6 and table 6.
i = input, o = output.
A = normal operation, no deviation from specs., B = temporary deviation from specs. possible.
Corresponds to the railway standard EN 50121-3-2:2006, table 9.3.
Corresponds to the railway standard EN 50121-3-2:2006, table 9.1.
Valid for 24IMS15 and 48IMS15
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IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Table 11: External capacitors across the input to comply with
EN 55011/EN 55032, Class A, conducted; see fig. 17.
Conducted Emissions
PMM 8000 PLUS
Name: 20d12_1
dbµV
Date: 24.04.06
Time: 16:23
20IMX15-12-12-8 Peak
Model
80
20IMX15, 24IMS15
40IMX15, 48IMS15
110IMY15
EN 55022 A
20IMX15D12-con-p
60
40
20
0.2
0.5
1
2
5
10
20 MHz
PMM 8000 PLUS
Name: 40d12_1
dbµV
80
EN 55022 A
40IMX15D12-con-p
60
40
Date: 02.05.06
Time: 09:58
40IMX15-12-12-8-Peak
EN 55022 B
60
40
20
0
Date: 24.04.06
Time: 15:2
40IMX15-12-12-8 Peak
220 µF/50 V
220 µF/100 V
4.7 µF/200 V
40IMX15D12-F
Fig. 17a
Typ. disturbance voltage (peak) at pos. input according to EN
55011/032, measured at Vi nom and Io nom. Output leads 0.1
m, twisted, input capacitors see table 11 (20IMX15-12-12-8)
Electrolytic capacitor
PMM 8000 PLUS
Name: 40d12_4
dbµV
0
Ceramic ML
0.47 µF/50 V
0.33 µF/100 V
0.15 µF/ 200 V
0.2
0.5
1
2
5
10
20 MHz
Fig. 18
Typ. disturbance voltage (peak) at input according to EN
55011/022, measured at Vi nom and Io nom. Output leads 0.1 m,
twisted, input filter as in fig. 19 (40IMX15-12-12-8)
20
Vi+
0
0.2
0.5
1
2
5
10
20 MHz
Fig. 17b
Typ. disturbance voltage (peak) at pos. input according to EN
55011/032, measured at Vi nom and Io nom. Output leads 0.1
m, twisted, input capacitors see table 11 (40IMX15-12-12-8)
PMM 8000 PLUS
Name: 110d12_1
dbµV
47 µF
22 nF
47 µF
330 nF
40IMX15
Vi–
Fig. 19
Example for external circuitry to comply with EN 55011/ EN
55032, Class B, conducted.
This filter was designed for a 40IMX15-12-12-8. All
capacitors are rated to 100 V, the chokes to 1.5 A.
Date: 25.04.06
Time: 08:07
Peak
110IMY15-12-12-9
80
JM126
22 µH
EN 55022 A
110IMY15-D12-con-p
60
40
20
0
0.2
0.5
1
2
5
10
20 MHz
Fig. 17c
Typ. disturbance voltage (peak) at pos. input according to EN
55011/032, measured at Vi nom and Io nom.
Output leads 0.1 m, twisted, input capacitors see table 11
(110IMY15-12-12-8)
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IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Immunity to Environmental Conditions
Table 12: Mechanical and climatic stress
Test Method
Standard
Test Conditions
Status
Cab
Damp heat
steady state
IEC/EN 60068-2-78
MIL-STD-810D sect. 507.2
Temperature:
Relative humidity:
Duration:
40 ±2
C
93 +2/-3 %
56 days
Converter
not
operating
Ea
Shock
(half-sinusoidal)
IEC/EN 60068-2-27
MIL-STD-810D sect. 516.3
Acceleration amplitude:
Bump duration:
Number of bumps:
50 gn = 490 m/s 2
11 ms
18 (3 each direction)
Converter
operating
Fc
Vibration
(sinusoidal)
IEC/EN 60068-2-6
Acceleration amplitude:
Converter
operating
Frequency (1 Oct/min):
Test duration:
0.35 mm (10 to 60 Hz)
5 gn = 49 m/s2 (60 to 2000 Hz)
10 to 2000 Hz
7.5 h (2.5 h each axis)
Fda
Random vibration IEC/EN 60068-2-35
wide band
reproducibility
high
Acceleration spectral density:
Frequency band:
Acceleration magnitude:
Test duration:
0.05 g n2 /Hz
20 to 500 Hz
4.9 gn rms
3 h (1 h each axis)
Converter
operating
--
Salt mist test
sodium chloride
(NaCl) solution
Temperature:
Duration:
35 ±2 °C
16 h
Converter
not
operating
EN 50155:2007,
clause 12.2.10
class ST2
Temperatures
Table 14: Temperature specifications
Valid for air pressure of 800 to 1200 hPa (800 to 1200 mbar)
Temperature
-9
Characteristics
Conditions
Operational 1
TA
Ambient temperature
TC
Case temperature
TS
Storage temperature
1
2
3
Non operational
-8
min
max
min
Unit
max
–40
71
–40 2,
3
85
–40
95
–40 2,
3
105
–55
85
–55
°C
85
See Thermal Considerations
Start-up at –55 °C, except models with synchronous rectifier SR
–25 °C for all models with synchronous rectifier SR with Revision < BA.
Reliability
Table 13: MTBF
Model
Standard
Ground Benign
TC = 40 °C
20IMX15-12-12-8
MIL-HDBK-217F
20IMX15-15-15-8
Belcore
48IMS15-05-05-9
110IMY15-05-8R
Ground Fixed
Ground Mobile
TC = 40 °C
TC = 70 °C
TC = 50 °C
697 000
366 000
229 000
312 000
2 345 000
1 172 000
632 000
317 000
MIL-HDBK-217F
535 000
283 000
179 000
245 000
MIL-HDBK-217F
485 000
255 000
167 000
223 000
1 547 000
774 000
394 000
206 000
Belcore
Unit
h
MELCHER
BCD20008-G Rev AE, 25-Aug-2017
The Power Partners.
Page 16 of 19
IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Mechanical Data
Dimensions in mm (inches). Tolerances ±0.3 mm, unless otherwise noted.
European
Projection
Measuring point of case temperature TC
10.5 ±0.3 (0.41")
0.8 (0.03")
for holes with
∅ 1.4 mm
45.72 (1.8")
13
36.83 (1.45")
12
5.08 (0.2")
11
1
3 x 5.08 (0.2")
40.8 (1.6")
2.54 (0.1")
S09011c
2
3
bottom view
15
4
17
≥5 (0.19")
Fixing hole for
M2 or KA 22
self-tapping screws
47 (1.85")
50.9 (2")
Fig. 20
Case IMX15, IMS15, IMY15
Material: Fortron 1140L6
Weight: <35 g
8.9 ±0.3 (0.35")
0.8 (0.03")
for holes with
∅ 1.4 mm
45.72 (1.8")
2.54 (0.1")
S90011c
11
2
15
3
4
38.8 (1.52")
3 x 5.08 (0.2")
1
6 x 5.08 (0.2")
12
13
bottom view
17
≥5 (0.19")
48.3 (1.9")
Fig. 21
Open frame (option Z)
MELCHER
BCD20008-G Rev AE, 25-Aug-2017
The Power Partners.
Page 17 of 19
IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
The converters have been evaluated for:
• Building in
Safety and Installation Instructions
Pin allocation
• Supplementary insulation input to output, based on their
maximum input voltage (IMX15, IMS15)
Table 15: Pin allocation
Pin
• Reinforced insulation input to output, based on their
maximum input voltage (IMY15 models)
Standard and Option Z
single
double
-0503-
1
Vi+
Vi+
Vi+
2
Vi–
Vi–
Vi–
3
-
Trim
n.c.
4
SD
SD
SD
5
-
-
-
6
-
-
-
11
-
Vo1+
Vo2+
12
-
Vo1–
Go
13
Vo+
Vo2+
Vo1+
15
Vo–
Vo2–
Go
17
R
n.c.
R
• Pollution degree 2 environment (not option Z)
• Connecting the input to a secondary circuit subject to a
maximum transient rating of 1500 V (IMX15, IMS15)
• Connecting the input to a secondary circuit subject to a
maximum transient rating of 2500 V (IMY15)
The converters are subject to manufacturing surveillance in
accordance with the above mentioned UL standards and with
ISO9001:2008.
Railway Applications
To comply with railway standards, all components are coated
with a protective lacquer (except option Z).
Protection Degree and Cleaning Liquids
The protection degree of the converters is IP 40, except openframe models (option Z).
10005
In order to avoid possible damage, any penetration of cleaning
fluids should be prevented, since the power supplies are not
hermetical sealed.
11
12
1
However, open-frame models (option Z) leave the factory
unlacquered; they may be lacquered by the customer, for
instance together with the mother board. Cleaning liquids are
not permitted – except washing at room temperature with
isopropyl alcohol. If necessary, the mother board must be
cleaned, before fitting the open-frame converter.
13
Bottom view
2
3
15
4
17
Note: Cleaning liquids may damage the adhesive joints of the
ferrite cores.
Fig. 22
Footprint
Isolation
Installation Instructions
Installation must strictly follow the national safety regulations in
compliance with the enclosure, mounting, creepage,
clearance, casualty, markings and segregation requirements of
the end-use application.
The converter must be connected to a secondary circuit.
The electric strength test is performed in the factory as routine
test in accordance with EN 50514 and IEC/EN 60950. The
Company will not honor any warranty claims resulting from
incorrectly executed electric strength field tests.
Table 16: Electric strength test voltages
Do not open the converter.
Characteristic
IMS15
Ensure that a converter failure (e.g., by an internal short-circuit)
does not result in a hazardous condition.
Factory test ≥1 s
1.2
1.5 1
3.0
0.1
kVAC
Equivalent DC voltage
(1.7)
(2.1)
(4.2)
0.15
kVDC
Input Fuse
Insulation resistance
at 500 VDC
>100
>100
>100
-
MΩ
-
kV
To prevent excessive current flowing through the input supply
lines in case of a malfunction an external fuse should be
installed in a non-earthed input supply line; see table 4 .
Partial discharge
extinction voltage
1
Standards and Approvals
The converters are approved according to IEC 60950-1 and UL/
CSA 60950-1 2nd Edition. 110IMY models are fitted with a CE
mark.
2
Input to output Output toUnit
IMX15 IMY15 output
Consult the Company
1.5 kVAC according to IEC 60950, sect. 6.2, Telecom
equipment; type test with 1.5 kVAC / 60 s (IEE 802.3). IMX15
units produced before 2013 were tested only with 1.2 kVAC.
The test voltage between outputs is not applied as routine test.
MELCHER
BCD20008-G Rev AE, 25-Aug-2017
The Power Partners.
Page 18 of 19
IMX15, IMY15, IMS15 Series Data Sheet
15 Watt DC-DC Converters
Description of Options
Table 17: Survey of options
Option
Function of option
Characteristic
Temperature range, NFND
See table Temperatures specifications
i
Inhibit
Replaces the shutdown function with inverted logic
Z
Open frame
See Mechanical Data
-9
Option -9 versus -8
IMX15 and IMY15 models with -9 (not for new designs) have a
limited temperature range. Standard models with suffix -8 are
rated up to TA = 85 °C; see table Temperature specifications.
means of a logic signal (TTL, CMOS, etc.) applied to the inhibit
pin. No output voltage overshoot will occur, when the converter
is turned on. If the inhibit function is not required, the inhibit pin
should be connected to Vi – to enable the output (active low
logic, fail safe).
Voltage on pin i:
Option i: Inhibit
Replaces the shut-down function with inverted logic.
The output(s) of the converter may be enabled or disabled by
Converter operating:
–10 V to 0.8 V
Converter inhibited:
2.4 V to Vi max (<75 V) or
pin i left open-circuit.
Option Z
06070
i
Open frame and not lacquered. This option can be chosen for
mounting onto a mother board, which is subject to be lacquered. See Protection Degree and Cleaning Liquids (page 18).
Vi–
Option G or -G
Vi+
Products RoHS-compliant for all 6 substances. See RoHSCompliant Models (page 3) for the correct denotation.
Fig. 23
If the inhibit function is not used, the inhibit pin should be
connected to Vi–.
Accessories
Supports are available for chassis mounting CMBIMX15
(HZZ00626) and for DIN-rail mounting DMBIMX15
(HZZ00625). They exhibit the connectors and allow for placing
different external components. For details see our Mounting
Supports Data Sheet BCD20007 on our website.
Fig. 24
DIN-rail mounting
support DMBIMX15
NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
Copyright © 2017, Bel Power Solutions Inc. All rights reserved.
belfuse.com/power-solutions
MELCHER
BCD20008-G Rev AE, 25-Aug-2017
The Power Partners.
Page 19 of 19