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 double-output models. A shutdown input allows for remote on/off.
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.
The converters have been approved by CSA. 20IMS/20IMX15 and 40IMS/40IMX15 models exhibit a basic insulation. The 110IMY15 models provide double
insulation and are CE marked. They may be connected to a rectified 110 VAC source or a 110 V battery without any further insulation barrier.
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 fastening.
Model Selection
Table 1: Model Selection
Output 1
V
o nom
[VDC]
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
5.1
5.1
5.1
5
5
5
5
12
12
12
12
15
15
15
15
24
24
24
24
1
Output 2
V
o nom
[VDC]
-
-
-
-
-
-
-
-
-
-
-
3.3
3.3
3.3
3.3
3.3
5
5
5
5
12
12
12
12
15
15
15
15
24
24
24
24
I
o nom 1
[mA]
-
-
-
-
-
-
-
-
-
-
-
1.35
1.6
1.5
1.6
1.5
1.3
1.4
1.4
1.4
0.65
0.7
0.7
0.7
0.5
0.56
0.56
0.56
0.32
0.35
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
13.8
12.8
12.8
11.3
13.5
12.6
13.5
12.6
13.0
14.0
14.0
14.0
15.6
16.8
16.8
16.8
15.0
16.8
16.8
16.8
15.4
16.8
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
14 to 36
16.8 to 75
3
50 to 150
4
8.4 to 36
5
14 to 36
16.8 to 75
3
36 to 75
50 to 150
4
8.4 to 36
5
14 to 36
16.8 to 75
3
50 to 150
4
8.4 to 36
5
14 to 36
16.8 to 75
3
50 to 150
4
8.4 to 36
5
14 to 36
16.8 to 75
3
50 to 150
4
8.4 to 36
5
14 to 36
16.8 to 75
3
50 to 150
4
Efficiency
6
η
min
[%]
80
78
81
77
83
85
79.5
82
81.5
81.5
78
82
81
82
79
79
82
81
81
80
83
83
84
82
85
83
83
82
83
84
84
82
η
max
[%]
82
80
83
79
86
87
82
84
84
83
81
84
83
84
82
82
85
84
84
82
86
86
87
85
88
86
86
85
86
87
86
85
Model
Options
2
I
o nom 1
[mA]
4.5
4.0
4.5
4.5
3.5
3.5
3.5
2.3
2.7
2.5
2.5
1.35
1.6
1.5
1.6
1.5
1.3
1.4
1.4
1.4
0.65
0.7
0.7
0.7
0.5
0.56
0.56
0.56
0.32
0.35
0.35
0.35
20IMX15-03-8RG-G
SR
40IMX15-03-8RG
40IMX15-03-8RG-G
SR
110IMY15-03-8RG-G
SR
20IMX15-05-8RG-G
SR
40IMX15-05-8RG-G
SR
110IMY15-05-8RG-G
SR
20IMX15-05-8R-G
24IMS15-05-9R
40IMX15-05-8R-G
110IMY15-05-8R-G
20IMX15-0503-8RG
24IMS15-0503-9R
40IMX15-0503-8RG
48IMS15-0503-9R
110IMY15-0503-8RG
20IMX15-05-05-8G
24IMS15-05-05-9
40IMX15-05-05-8G
110IMY15-05-05-8G
20IMX15-12-12-8G
24IMS15-12-12-9
40IMX15-12-12-8G
110IMY15-12-12-8G
20IMX15-15-15-8G
24IMS15-15-15-9
40IMX15-15-15-8G
110IMY15-15-15-8G
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
i, Z, non-G
i, Z, non-G
i, Z, non-G
Z, non-G
---
---
Z, non-G
i, Z, non-G
---
i, Z, non-G
---
i, Z, non-G
i, Z, non-G
---
i, Z, non-G
i, Z, non-G
i, Z, non-G
---
i, Z, non-G
i, Z, non-G
i, Z, non-G
---
i, Z, non-G
i, Z, non-G
i, Z, non-G
non-G
i, Z, non-G
i, Z, non-G
2
3
4
5
6
SR
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 total output power should not
exceed
P
o nom
.
See
Description of Options.
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
) and up to 154 V
Initial start-up at 9 V, main output voltage regulation down to 8.4 V
Efficiency at
T
A
= 25 °C,
V
i nom,
I
o nom
.
Models with synchronous rectifier. For the RoHS version of such models, add -G !
NFND: Not for new designs.
Preferred 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 !
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