IMX15/IMY15 DC-DC Series Data Sheet
15-Watt DC-DC Converters
Features
Wide input voltage ranges up to 150 VDC
1 or 2 outputs up to 48 VDC
1200 to 3000 VAC I/O electric strength test
•
•
•
•
•
•
•
•
•
•
•
•
•
•
40.6
1.6"
10.5
0.42"
51
2.0"
PRODUCT SERVICE
Extremely wide input voltage ranges
Electrical isolation, also between outputs
Emissions EN 55022 level A
Immunity to IEC/EN 61000-4-2,-3,-4,-5, and -6
High efficiency (typ. 87%)
Input undervoltage lockout
Shut down 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
1
P
roduction monitored
T
ype tested
1
Description
The IMX15 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 3 different models, the units are available with
single, dual and electrically-isolated double outputs from
3.3 up to 48 V externally adjustable, with flexible load
distribution on dual and double output units. A shut down
input allows remote converter on-off. Features include
consistently high efficiency over the entire input voltage
range, high reliability and excellent dynamic response to
load and line changes.
The converters are designed and built according to the
international safety standards IEC/EN/UL 60950 and ap-
proved by TÜV, UL and cUL. The models 20IMX15 and
For 110IMY15 models
40IMX15 provide supplementary insulation. Connected to
a secondary circuit the 40IMX15 models provide SELV
outputs, even if the bus voltage at the converter input ex-
ceeds the SELV-limit of 60 VDC. The 110IMY15 models
provide double insulation and are CE marked. They may
be connected for example to a rectified 110 VAC source
without any further isolation barrier.
The circuit comprises of integrated planar magnetics and
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 considerations of possible thermal
stresses ensure the absence of hot spots providing long
life in environments where temperature cycles are a
reality. The thermal design allows operation at full load up
to an ambient temperature of 85 °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
Page
Description ............................................................... 1
Model Selection ........................................................ 2
Part Number Description .......................................... 3
Functional Description .............................................. 4
Electrical Input Data .................................................. 5
Electrical Output Data ............................................... 7
Auxiliary Functions .................................................. 12
MAR 29, 2006 revised to May 30, 2006
Electromagnetic Compatibility (EMC) ..................... 13
Immunity to Environmental Conditions .................... 15
Mechanical Data ..................................................... 16
Safety and Installation Instructions ......................... 17
Description of Options ............................................ 18
EC Declaration of Conformity ................................. 19
Page 1 of 19
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IMX15/IMY15 DC-DC Series Data Sheet
15-Watt DC-DC Converters
Model Selection
Table 1: Model Selection
Output 1
V
o nom
I
o nom 1
[VDC]
[A]
3.3
3.3
3.3
3.3
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5.1
5
5
5
12
12
12
15
15
15
24
24
24
1
Output 2
V
o nom
I
o nom 1
[VDC]
[A]
-
-
-
-
-
-
-
-
-
-
3.3
3.3
3.3
5
5
5
12
12
12
15
15
15
24
24
24
-
-
-
-
-
-
-
-
-
-
1.35
1.5
1.5
1.3
1.4
1.4
0.65
0.7
0.7
0.5
0.56
0.56
0.32
0.35
0.35
Output
power
P
o nom
[W]
14.9
13.2
14.9
14.9
17.5
17.5
17.5
11.7
12.8
12.8
11.3
12.6
12.6
13.0
14.0
14.0
15.6
16.8
16.8
15.0
16.8
16.8
15.4
16.8
16.8
Input voltage
V
i min
to
V
i max
[VDC]
8.4 to 36
5
16.8 to 75
3
16.8 to 75
3
50 to 150
4
8.4 to 36
5
16.8 to 75
3
50 to 150
4
8.4 to 36
5
16.8 to 75
3
50 to 150
4
8.4 to 36
5
16.8 to 75
3
50 to 150
4
8.4 to 36
5
16.8 to 75
3
50 to 150
4
8.4 to 36
5
16.8 to 75
3
50 to 150
4
8.4 to 36
5
16.8 to 75
3
50 to 150
4
8.4 to 36
5
16.8 to 75
3
50 to 150
4
Efficiency
η
6
[%]
84
80
85
84
86
87
86
85
83
83
84
84
82
86
86
86
88
88
87
88
88
87
86
86
86
Model
Options
2
4.5
4.0
4.5
4.5
3.5
3.5
3.5
2.3
2.5
2.5
1.35
1.5
1.5
1.3
1.4
1.4
0.65
0.7
0.7
0.5
0.56
0.56
0.32
0.35
0.35
20IMX15-03-8RG
7
40IMX15-03-8R
7
40IMX15-03-8RG
7
110IMY15-03-8RG
7
20IMX15-05-8RG
7
40IMX15-05-8RG
7
110IMY15-05-8RG
7
20IMX15-05-8R
7
40IMX15-05-8R
7
110IMY15-05-8R
7
20IMX15-0503-8R
40IMX15-0503-8R
110IMY15-0503-8R
20IMX15-05-05-8
40IMX15-05-05-8
110IMY15-05-05-8
20IMX15-12-12-8
40IMX15-12-12-8
110IMY15-12-12-8
20IMX15-15-15-8
40IMX15-15-15-8
110IMY15-15-15-8
20IMX15-24-24-8
40IMX15-24-24-8
110IMY15-24-24-8
-9, i, Z
i, Z
-9, i, Z
i, Z
i, Z
i, Z
i, Z
-9, i, Z
-9, i, Z
i, Z
-9, i, Z
-9, i, Z
i, Z
-9, i, R, Z
-9, i, R, Z
i, Z
-9, i, Z
-9, i, R, Z
i, Z
-9, i, R, Z
-9, i, R, Z
i, R, Z
-9, i, R, Z
-9, i, R, Z
i, Z
2
3
4
5
6
7
Flexible load distribution on dual and double outputs possible up to 75% of the total output power
P
o 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 other output should not
exceed the difference to the total output power
P
o nom
.
See:
Description of Options.
For availability ask Power-One. Option -9 is not recommended for new designs.
Short-time operation down to
V
i
= 14.4 V possible.
P
o
reduced to approx. 85% of
P
o nom
.
Short-time operation down to
V
i
= 43.2 V possible.
P
o
reduced to approx. 85% of
P
o nom
.
Initial start-up at 9 V, main output voltage regulation down to 8.4 V.
Typ. efficiency at
V
i nom,
I
o nom
.
These models are also available with RoHS compliance, see below. Such models are not available with option -9.
RoHS-Compliant Models
The type designation of RoHS-compliant models of the IMX/IMY15 series ends with "G". In this series an extra dash (-) is
added after the existing "G", which already signifies a synchronous rectifier at the output. This is an exception to Power-
One's normal nomenclature to identify RoHS-compliant products, since G is already used to designate products for higher
output current fitted with a synchronous rectifier. As an example
– 20IMX15-05-8R-G means a standard version with RoHS compliance
– 20IMX15-05-8RG means a synchronous rectifier version without RoHS compliance
– 20IMX15-05-8RG-G means a synchronous rectifier version with RoHS compliance.
Please ask Power-One for availability of RoHS-compliant models.
MAR 29, 2006 revised to May 30, 2006
Page 2 of 19
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IMX15/IMY15 DC-DC Series Data Sheet
15-Watt DC-DC Converters
Part Number Description
20 IMX15 - 05 - 05 - 8 R G i Z
xxix
Input voltage range
V
i
8.4 to 36 VDC ...................................... 20
16.8 to 75 VDC ...................................... 40
50 to 150 VDC ..................................... 110
Series ................................................. IMX15, IMY15
Output voltage type output 1 .......... 03, 05, 12, 15, 24
Dash designates double output unit with two
independent electrically isolated outputs .............. -
1
Output voltage type output 2 .......... 03, 05, 12, 15, 24
Operating ambient temperature range
T
A
–40
5
to 85 °C (standard) .................... -8
–40
5
to 71 °C NFND ........................... -9
Options and features:
R input and magnetic feedback ............ R
2, 3
Synchronous rectification .................... G
Inhibit ..................................................... i
2, 4
Open frame .......................................... Z
1
2
Not applicable to -0503 models.
For lead times contact Power-One. Some types require a minimum order quantity.
3
Standard features for single output and -0503- models.
4
Option i excludes shut down.
5
Only –25 °C for -RG models.
Examples: 20 IMX15-05-05-8: DC-DC converter, input voltage 9 to 36 V, 2 electrically isolated outputs each
providing 5 V, 1.3 A.
110 IMY15-0503-8R: DC-DC converter, input voltage 50 to 150 V, 2 outputs with common return
providing +5.1 V, 1.5 A and +3.3 V, 1.5 A. Unit fitted with magnetic feedback for tight output voltage
regulation.
Product Marking
Basic type designation, input and output voltages and currents, applicable safety approval and recognition marks,
Power-One patent nos., company logo, date code and serial numbers.
MAR 29, 2006 revised to May 30, 2006
Page 3 of 19
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IMX15/IMY15 DC-DC Series Data Sheet
15-Watt DC-DC Converters
Functional Description
The IMX/IMY15 series of DC-DC converters are
magnetic feedback-controlled flyback converters using
current mode PWM (Pulse Width Modulation). The -05-
and -0503-output voltage models as well as all double
output models fitted with option R feature an active
magnetic feedback loop via a pulse transformer, which
results in very tight regulation of the output voltage (see
the block diagrams). The output voltages of these
versions can be adjusted via the R input. The R input is
referenced to the secondary side and allows for
programming of the output voltages in the range of
approximately 80 to 105% of
V
o nom
using either an
external resistor or an external voltage source.
The voltage regulation on the dual and double output
models without option R is achieved with a passive
transformer feedback from the main transformer (see
fig. 3:
Block diagram of double output models).
The
output voltages can be adjusted via the Trim input. The
Trim input is referenced to the primary side of the
converter and allows for programming of the output
voltages in the range 100 to 105% of
V
o nom
via an
external resistor or within 75 to 105% using an external
voltage source. The load regulation output
characteristic allows for paralleling of one or several
double output units with equal output voltages.
Current limitation is provided by the primary circuit, thus
limiting the total output power of double output types.
The shut down input allows remote converter on/off.
Overtemperature protection will disable the unit under
excessive overload conditions with automatic restart.
03089
Vi+
1
13
Vo1+
SD
4
PWM
n.c.
3
15
Go
11
Vo2+
Vi–
2
2
×
2200 pF
12
Go
17
R
Fig. 2
Block diagram of -0503-models.
03090
Vi+
1
11
Vo1+
SD
4
PWM
Trim
3
12
Vo1–
13
Vo2+
Vi–
2
2
×
2200 pF
15
Vo2–
17
n.c.
03039
Fig. 3
Block diagram of double output models.
Vi+
1
13
Vo+
PWM
SD
4
15
Vo–
2
×
2200 pF
1500 V
Vi–
2
17
R
Fig. 1
Block diagram of single output models
MAR 29, 2006 revised to May 30, 2006
Page 4 of 19
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IMX15/IMY15 DC-DC Series Data Sheet
15-Watt DC-DC Converters
Electrical Input Data
General conditions:
– T
A
= 25 °C, unless
T
C
is specified.
– Shut down pin left open-circuit.
– Trim or R input left open-circuit.
Table 2: Input Data
Input
Characteristics
V
i
V
i nom
V
i sur
t
start up
Input voltage range
1
Nominal input voltage
Repetitive surge voltage
Converter
Switch on
2
start-up time
SD high
Rise time
2
Conditions
T
A min
to
T
A max
I
o
= 0 to
I
o nom
Abs. max input (3 s)
Worst case condition at
V
i min
and full load
V
i nom
resistive load
I
o nom
capac. load
I
i o
I
irr
I
inr p
C
i
––
V
S D
20IMX
min
9
5, 8
20
40
0.25
0.5
0.1
5
10
20
40
30
8
1.5
–10 to 0.7
open or 2 to 20
approx. 10
6
approx. 300
typ max
36
min
40IMX
typ max
75
40
100
0.25 0.5
0.1
5
10
20
20
30
9
0.75
–10 to 0.7
open or 2 to 20
approx. 10
3
approx. 300
min
110IMY
typ max
150
110
168
0.25
0.5
0.1
5
10
20
10
20
10
0.35
–10 to 0.7
open or 2 to 20
approx. 10
1
approx. 300
kΩ
mA
kHz
mA
mA
pp
A
µF
VDC
ms
s
Unit
VDC
16.8
5, 6
50
5, 7
t
rise
No load input current
Reflected ripple current
Inrush peak current
3
Input capacitance
Shut down voltage
I
o
= 0,
V
i min
to
V
i max
I
o
= 0 to
I
o nom
V
i
=
V
i nom
for surge calculation
Converter shut down
Converter operating
––
R
SD
––
I
SD
Shutdown input resistance
Input current when
shut down
Switching frequency
For current calculations
V
i min
to
V
i max
SD connected to Vi–
V
i min
to
V
i max
,
I
o
= 0 to
I
o nom
EN 55022
4
f
s
V
i RFI
Input RFI level conducted
A
A
A
1
2
3
4
5
6
7
8
If
V
o
is set above
V
o nom
by use of the R or Trim input,
V
i 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 an ceramic capacitor Ci directly across input; output lead length 0.1 m, leads twisted. Double-output models with both
outputs in parallel. Ci is specified in table 11.
Input undervoltage lockout at typ. 80% of
V
i min
.
Short time operation down to
V
i min
>14.4 V possible.
P
o
reduced to approx. 85% of
P
o nom
.
Short time operation down to
V
i min
>43.2 V possible.
P
o
reduced to approx. 85% of
P
o nom
.
Initial start-up at
V
i
= 9 V, main output voltage regulation down to 8.4 V.
MAR 29, 2006 revised to May 30, 2006
Page 5 of 19
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