Industrial Environment
DC/DC Converters < 40W
IMS6 Series
6 Watt SMD and through hole
DC/DC converters
Input to output electric strength test up to 2 kV DC
Input voltage ranges:
18...36 and 36...75 V DC
Single and dual outputs of 5, 12, 15 V DC
•
Wide input voltage ranges
•
Electrical isolation, single and dual outputs
•
Immunity to IEC/EN 61000-4-2, -3, -4, -5 and -6
•
High efficiency (typ. 82%)
• Flex power: flexible load distribution
•
No load and short-circuit proof
•
High reliability and no derating
•
Operating ambient temperature –40...+ 71
o
C
•
Industrial, alternative and SMD pinout
•
DIL 24 case with 9.0 mm profile
Safety approvals pending to IEC/EN 60950, UL 1950
LGA
C
IMS 6 Series
Summary
The IMS 6 series of board mountable 6 W DC-DC convert-
ers has been designed according to the latest industry re-
quirements and standards. The converters are particularly
suitable for use in mobile or stationary applications in trans-
port, industry or telecommunications where variable input
voltages or high transient voltages are prevalent.
Covering a total input voltage range from 18 V DC up to
75 V DC.
The converters are designed and built according to the
international safety standards IEC/EN 60950, UL 1950,
CAN/CSA C22.2 No.950-95 and are LGA and UL marked.
A special feature is their small case size, DIL 24 with only
9.0 mm profile. The circuit comprises integrated planar
magnetics and all components are automatically assem-
bled and solidly soldered onto a single PCB without any
wire connections. Thanks to the rigid mechanical design the
units withstand an extremely high level of shock and vibra-
tions. Careful considerations of possible thermal stresses
ensure the absence of hot spots providing long life in envi-
ronments where temperature cycles are a reality. The ther-
mal design allows operation at full load up to an ambient
temperature of 71 C in free air without using any potting
material.
Options : SMD pinout or K-pinout, an alternative to the
standard industrial pinout, provide a high level of applica-
tion specific engineering and design-in flexibility.
Table of Contents
Page
Page
Electromagnetic Compatibility (EMC) .............................. 8
Mechanical Data .............................................................. 9
Immunity to Environmental Conditions ........................... 10
Safety and Installation Instructions ................................ 11
Description of Options .................................................... 13
Summary .......................................................................... 1
Type Survey and Key Data .............................................. 2
Type Key .......................................................................... 2
Functional Description ...................................................... 3
Electrical Input Data ......................................................... 4
Electrical Output Data ...................................................... 6
Edition 1 06.00
Industrial Environment
DC/DC Converters < 40W
IMS6 Series
Type Survey and Key Data
Table 1: Type survey
Output 1
U
o1 nom
I
o1 nom
[V DC]
[A]
1
5
5
12
12
15
15
5
5
12
12
15
15
1
Output 2
U
o2 nom
I
o2 nom
[V DC]
[A]
1
-
-
-
-
-
-
5
5
12
12
15
15
-
-
-
-
-
-
500
500
250
250
200
200
Output Power
P
o nom
[W]
5.0
5.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
Input voltage
range
[V DC]
18...36
36...75
18...36
36...75
18...36
36...75
18...36
36...75
18...36
36...75
18...36
36...75
Efficiency
typ
Type
designation
24IMS6-05-9
48IMS6-05-9
24IMS6-12-9
48IMS6-12-9
24IMS6-15-9
48IMS6-15-9
24IMS6-0505-9
48IMS6-0505-9
24IMS6-1212-9
48IMS6-1212-9
24IMS6-1515-9
48IMS6-1515-9
Options
[%]
82
82
83
83
84
84
82
82
83
83
84
84
M, K, Z
M, K, Z
M, K, Z
M, K, Z
M, K, Z
M, K, Z
M, K, Z
M, K, Z
M, K, Z
M, K, Z
M, K, Z
M, K, Z
1000
1000
500
500
400
400
500
500
250
250
200
200
Flexible load distribution on double outputs possible to 75% , 25% asymetric loading.
Type Key
48 IMS 6 - 05 05 -9 K M Z
Input voltage range
U
i
16...36 V DC ............................................. 24
36...75 V DC ........................................... 48
Series ........................................................................ IMS 6
Output voltage type for output 1 ......................... 05, 12, 15
Output voltage type for output 2 ......................... 05, 12, 15
Operating ambient temperature range
T
A
–40...71 C .................................................. -9
Options:
Alternative pinout ......................................... K
1 2
SMD-pinout ................................................. M
1 2
Open frame ................................................. Z
2
1
Option M excludes option K and vice versa
For delivery lead times contact factory. Some types require a minimum order quantity.
Edition 1 06.00
Industrial Environment
DC/DC Converters < 40W
IMS6 Series
Functional Description
The IMS 6 DC-DC modules are feedback controlled flyback
converters using current mode PWM (Pulse Width Modula-
tion).
The converter input is protected against transients by
means of a suppressor diode.
The output voltage is monitored by a separate transformer
winding close to the secondary windings and fed back to
the control circuit.
03044
Current limitation is provided by the primary circuit, thus
limiting the total output current (I
o nom
for the single and
I
o1 nom
+
I
o2 nom
for the dual output types).
The close magnetic coupling provided by the planar con-
struction ensures very good regulation and allows for flex-
ible load distribution on dual output types.
03045
Vi+
22
23
14
Vo+
Vi+
22
23
14
Vo+
PWM
PWM
16
Vo–
16
Go
2
2
10
Vi–
3
Vi–
3
11
Vo–
Fig. 1
Block diagram for single output types.
Standard industrial pinout.
03046
Fig. 2
Block diagram for dual output types.
Standard industrial pinout.
03047
Vi+
1
n.c.
2
PWM
13
Vo+
Vi+
1
PWM
15
Vo+
10
12
Vo–
11
Go
Vi–
24
Vi–
24
13
Vo–
Fig. 3
Block diagram for single output types.
Special pinout (Option K).
03048
Fig. 4
Block diagram for dual output types.
Special pinout (Option K).
03049
Vi+
22
23
1
24
3
13
14
Vo+
Vi+
22
23
14
Vo+
15
PWM
15
11
12
Vo–
16
10
n.c.
9
n.c.
1
PWM
9
n.c.
10
24
3
16
13
Go
Vi–
2
Vi–
2
12
Vo–
11
Fig. 5
Block diagram for single output types.
SMD pinout (Option M).
Fig. 6
Block diagram for dual output types.
SMD pinout (Option M).
Edition 1 06.00
Industrial Environment
DC/DC Converters < 40W
IMS6 Series
Electrical Input Data
General conditions:
T
A
= 25 C, unless
T
C
is specified.
Table 2: Input Data
Input
Characteristics
Conditions
min
18
24
40
0.25
0.5
5
12
15
20
0.54
3.7
approx. 400
30
B
1
24 IMS 6
typ
max min
36
36
48 IMS 6
typ
max
75
48
100
0.25
0.5
5
12
5
10
0.3
4.2
approx. 400
30
B
1
Unit
V DC
U
i
U
i nom
U
i sur
t
start up
t
rise
I
i o
C
i
I
inr p
f
s
I
i rr
u
i RFI
1
2
3
Input voltage range
Nominal input voltage
Repetitive surge voltage
Converter start-up time
1
Rise time
1
T
C min
...T
C max
I
o
= 0...I
o nom
abs. max input (3 s)
Worst case condition at
U
i min
and full load
s
ms
U
i nom
I
o nom
resistive load
capacitive load
No load input current
Input capacitance
Inrush peak current
Switching frequency
Reflected ripple current
Input RFI level
conducted and radiated
I
o
= 0,
U
i min
...U
i max
for surge calculation
mA
uF
A
kHz
mA
pp
U
i
=
U
i nom 3
U
i min
...U
i max
,
I
o
= 0...I
o nom
I
o
= 0...I
o nom
EN 55022
2
Measured with a resistive or max. admissible capacitive load. (See fig.:
Converter start-up and rise time)
External filter required. (See:
Filter recommendations for compliance with EN 55022)
Source impedance according to prETS 300132-2, version 4.3.
Edition 1 06.00
Industrial Environment
DC/DC Converters < 40W
IMS6 Series
U
o
U
o nom
04008
Reverse Polarity Protection at Input
The suppressor diode on the input also provides for reverse
polarity protection by conducting current in the reverse di-
rection, thus protecting the unit. An external fuse is required
to limit this current:
t
rise
t
t
start up
– For 24 IMS 6 a fast 0.63 A (F0.63A) fuse is recommended
– For 48 IMS 6 a fast 0.35 A (F035A) fuse is recommended
Filter recommendations for compliance with EN 55022
Electromagnetic emission requirements according to table
Input data
can be achieved by adding an external capacitor
as close as possible to the input terminals.
04035
Fig. 7
Converter start-up and rise time
Inrush Current
The inrush current has been kept as low as possible by
choosing a very small input capacitance. A series resistor
may be inserted in the input line to limit this current further.
1 A/Div.
4
3
2
1
0
04034
Vi+
C
i
Vi–
Fig. 9
Input filter arrangement
Table 3: Input filter components (EN 55022)
Ref.
C
1
5 s/Div.
Type
24 IMS 6
2.2
,
F
,
100 V,
48 IMS 6
2.2 F
,
150 V,
ceramic or film
Fig. 8
Typical inrush current at U
i nom
, P
o nom
versus time
(48 IMS6 ) measured according to prETS 300132-2,
version 4.3.
Edition 1 06.00
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