6 Watt SMD and through hole IMS 6 Series
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 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
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 71C 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
Summary .......................................................................... 1
Type Survey and Key Data .............................................. 2
Type Key .......................................................................... 2
Functional Description...................................................... 3
Electrical Input Data ......................................................... 4
Electrical Output Data ...................................................... 6
Page
Electromagnetic Compatibility (EMC) .............................. 8
Mechanical Data .............................................................. 9
Immunity to Environmental Conditions........................... 10
Safety and Installation Instructions ................................ 11
Description of Options .................................................... 13
1/13 AR
Industrial Environment DC/DC Converters < 40W IMS6 Series
o
DC/DC converters
Type Survey and Key Data
Table 1: Type survey
Output 1 Output 2 Output Power Input voltage Efficiency Type Options
U
o1 nom
I
o1 nom
U
o2 nom
I
o2 nom
P
o nom range typ designation 2, 3
[V DC] [A] 1 [V DC] [A] 1 [W] [V DC] [%]
5 1000 - - 5.0 18...36 82 24IMS6-05-9 M, K
1Flexible load distribution on double outputs possible to 75% , 25% asymetric loading.
Type Key
48 IMS 6 - 05 05 -9 K M
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...71C .................................................. -9
Options: Alternative pinout ......................................... K 1 2
SMD-pinout ................................................. M 1 2
1Option M excludes option K and vice versa 2 For delivery lead times contact factory. Some types require a minimum order quantity.
Industrial Environment DC/DC Converters < 40W IMS6 Series
5 1000 - - 5.0 36...75 82 48IMS6-05-9 M, K
12 500 - - 6.0 18...36 83 24IMS6-12-9 M, K
12 500 - - 6.0 36...75 83 48IMS6-12-9 M, K
15 400 - - 6.0 18...36 84 24IMS6-15-9 M, K
15 400 - - 6.0 36...75 84 48IMS6-15-9 M, K
5 500 5 500 6.0 18...36 82 24IMS6-0505-9 M, K
5 500 5 500 6.0 36...75 82 48IMS6-0505-9 M, K
12 250 12 250 6.0 18...36 83 24IMS6-1212-9 M, K
12 250 12 250 6.0 18...36 83 48IMS6-1212-9 M, K
15 200 15 200 6.0 18...36 84 24IMS6-1515-9 M, K
15 200 15 200 6.0 18...36 84 48IMS6-1515-9 M, K
2/13 AR
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.
Fig. 2
Block diagram for dual output types.
Standard industrial pinout.
Fig. 1
Block diagram for single output types.
Standard industrial pinout.
PWM
Vi+
Vi–
Vo+
Vo–
22
3
14
16
10
23
2
03044
PWM
Vi+
Vi–
Vo+
Vo–
Go
23
22
2
3
14
16
11
03045
PWM
Vi+
Vi–
Vo+
Vo–
1
24
13
12
2
03046
n.c.
PWM
Vi+
Vi–
Vo+
Vo–
Go
1
24
15
10
13
03047
11
Fig. 4
Block diagram for dual output types.
Special pinout (Option K).
Fig. 3
Block diagram for single output types.
Special pinout (Option K).
PWM
Vi+
Vi–
Vo–
22
2
13
12
03048
23
3
n.c.
10
Vo+
14
15
11
16
PWM
Vi+
Vi–
Vo+
Vo–
Go
22
2
14
10
12
03049
16
15
13
11
23
3
Fig. 6
Block diagram for dual output types.
SMD pinout (Option M).
Fig. 5
Block diagram for single output types.
SMD pinout (Option M).
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.
Industrial Environment DC/DC Converters < 40W IMS6 Series
3/13 AR
24
1
9n.c.
9
1
24
n.c.
Electrical Input Data
General conditions:
T
A = 25C, unless
T
C is specified.
Table 2: Input Data
Input 24 IMS 6 48 IMS 6
Characteristics Conditions min typ max min typ max Unit
U
iInput voltage range
T
C min...
T
C max 18 36 36 75 V DC
U
i nom Nominal input voltage
I
o = 0...
I
o nom
U
i sur Repetitive surge voltage abs. max input (3 s) 40 100
t
start up Converter start-up time 1 Worst case condition at 0.25 0.5 0.25 0.5 s
U
i min and full load
t
rise Rise time 1
U
i nom resistive load 5 5 ms
I
o nom capacitive load 12 12
I
i o No load input current
I
o = 0,
U
i min...
U
i max 15 20 mA
C
iInput capacitance for surge calculation 0.54 0.3
uF
I
inr p Inrush peak current
U
i =
U
i nom 3 3.7 4.2 A
f
sSwitching frequency
U
i min...
U
i max,
I
o = 0...
I
o nom approx. 400 approx. 400 kHz
I
i rr Reflected ripple current
I
o = 0...
I
o nom 30 30 mApp
u
i RFI Input RFI level EN 55022 2 B 1
conducted and radiated
1Measured with a resistive or max. admissible capacitive load. (See fig.:
Converter start-up and rise time
)
2External filter required. (See:
Filter recommendations for compliance with EN 55022
)
3Source impedance according to prETS 300132-2, version 4.3.
Industrial Environment DC/DC Converters < 40W IMS6 Series
48
24
5 10
B 1
4/13 AR
Industrial Environment DC/DC Converters < 40W IMS6 Series
5/13 AR
U
o nom
U
o
t
start up
t
rise
t
04008
Fig. 7
Converter start-up and rise time
1 A/Div.
5 s/Div.
04034
0
1
2
3
4
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.
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.
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:
– 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.
Fig. 9
Input filter arrangement
Vi+
Vi–
C
i
04035
Table 3: Input filter components (EN 55022)
Ref. 24 IMS 6 48 IMS 6
C1 ,
2.2 F, 100 V, 2.2 F, 150 V,
Type ceramic or film
Electrical Output Data
General conditions:
T
A = 25C, unless
T
C is specified.
Table 6a: Output data for single output units
Output
U
o nom 5.0 V 12.0 V 15.0 V
Characteristics Conditions min typ max min typ max min typ max Unit
U
oOutput voltage
U
i nom,
I
o = 0.5
I
o nom 4.96 5.04 11.90 12.10 14.88 15.12 VDC
I
o nom Output current
U
i min...
U
i max 1000 500 400 mA
I
o L Current limit 2
U
i nom,
T
C = 25C 1400 700 600
U
o U Line regulation
U
i min...
U
i max,
I
o nom 111%
U
Load regulation
U
i nom 333
I
o = (0.1...1)
I
o nom
u
o1, 2 Output voltage noise
U
i min...
U
i max 580 120 150 mVpp
I
o =
I
o nom 620 40 40 60 50 75
U
o clp Output overvoltage Min. load 1% 130 130 130 %
limitation
C
o ext Admissible 680 150 100 uF
capacitive load 3
u
o d Dynamic Voltage deviat.
U
i nom 250 250 250 mV
t
dload Recovery time
I
o nom 1/2
I
o nom 11ms
regulat.
Uo Temperature coefficient
U
i min...
U
i max 0.02 0.02 0.02 %/K
U
o/
T
C
I
o = 0...
I
o nom
Table 6b: Output data for dual output units
Output
U
o nom 5 V 12 V 15 V
Characteristics Conditions min typ max min typ max min typ max Unit
U
o1 Output voltage
U
i nom 4.96 5.04 11.90 12.10 14.88 15.12 VDC
U
o2
I
o1 =
I
o2 = 0.5
I
o nom 4.95 5.05 11.88 12.12 14.85 15.15
I
o nom Output current 1
U
i min...
U
i max 2 500 2 350 2 200 mA
U
o U Line regulation
U
i min...
U
i max,
I
o nom 111
U
Load regulation 4
U
i nom 33.5 3
I
o = (0.1...1)
I
o nom
u
o1, 2 Output voltage noise
U
i min...
U
i max 5100 140 150 mVpp
I
o =
I
o nom 640 60 45 70 50 75
U
o clp Output overvoltage Min. load 1% 130 130 130 %
limitation
C
o ext Admissible 680 150 100 uF
capacitive load 3
u
o d Dynamic Voltage deviat.
U
i nom 250 600 750 mV
t
dload Recovery time
I
o nom 1/2
I
o nom 111 ms
regulat.
Uo Temperature coefficient
U
i min...
U
i max 0.02 0.02 0.02 %/K
U
o/
T
C
I
o = 0...
I
o nom
1Each output capable of delivering full output power.
2The current limit is primary side controlled.
3Sum of both outputs.
4Conditions for specified output. Other output loaded with constant current
I
o = 0.5
I
o nom.
5BW = 20 MHz
6Measured with a probe according to EN 61204.
Industrial Environment DC/DC Converters < 40W IMS6 Series
6/13 AR
N/A
%
N/A
xxx
Output overvoltage protection
The outputs of the IMS 6 converters are protected against
overvoltages by Zener diodes. In the event of an overvolt-
age on the output, the unit will shut-down and attempt to
restart automatically. The main purpose of this feature is to
protect against possible overvoltages which could occur
due to a failure in the feedback control circuit. The units are
not designed to withstand external overvoltages applied to
the outputs.
Connection in series
The outputs of single or dual output units can be connected
in series without any precautions, taking into consideration
that the highest output voltage should remain below 60 V for
SELV operation.
Connection in parallel
The outputs of several units with equal nominal output volt-
age can be connected in parallel. Approximate current
sharing between 2 or several units is ensured by their load
dependent output characteristic.
Fig. 12
U
o
versus I
o
(typ) of single output units (example for
48IMS6-05-9
Fig. 13
U
o
versus I
o
(typ) of dual output units (
15 V), with 30 V
load connected to Vo+ and Vo–.
5.25
5.0
4.75
4.5
4.25
4.0 0I
o
[A]
U
o
[V]
05056
28.5
29
29.5
30
30.5
31
31.5
U
o1
+ U
o2
[V]
33 66 100 133 166 200 233 I
o
[mA]
0
05057
14
14.5
15
15.5
16
16.5
U
o1
[V]
33 66 100 33 66 200 233 I
o1
[mA]
0
I
o2
= 140 mA
I
o2
= 14 mA
05058
U
o1
, U
o2
[V]
I
o1
I
o1 no
05059
12.8
12.4
12
11.6
11.2 0
150
300 [%]
U
o2
U
o1
Thermal Considerations
If a converter, mounted on a PCB, is located in free, quasi-
stationary air (convection cooling) at the indicated maxi-
mum ambient temperature
T
A max (see table:
Temperature
specifications)
and is operated at its nominal input voltage
and output power, the case temperature
T
C measured at
the:
Measuring point of case temperature T
C
(see:
Me-
chanical Data
) will approach the indicated value
T
C max af-
ter the warm-up phase. However, the relationship between
T
A and
T
C depends heavily on the conditions of operation
and integration into a system. The thermal conditions are
influenced by input voltage, output current, airflow, tem-
perature of surrounding components and surfaces and the
properties of the printed circuit board.
T
A max is therefore
only an indicative value and under practical operating con-
ditions, the ambient temperature
T
A may be higher or lower
than this value.
Caution: The case temperature
T
C measured at the
Measuring point of case temperature T
C
(see:
Mechani-
cal Data
) may under no circumstances exceed the speci-
fied maximum value. The installer must ensure that un-
der all operating conditions
T
C remains within the limits
stated in the table
Temperature specifications.
Short Circuit Behaviour
The current limit characteristic shuts down the converter
whenever a short circuit is applied to its output. It acts self-
protecting and automatically recovers after removal of the
overload condition.
Typical Performance Curves
Fig. 14
Cross load regulation of dual output units. U
o1
versus
I
o1
(typ) for various I
o2
(48IMS6-1515-9).
Fig. 15
Flexible load distribution on dual outputs (2
x
12 V) with
load variation from 0...150% of P
o1 nom
on output 1.
Output 2 loaded with 25% of P
o2 nom
.
Industrial Environment DC/DC Converters < 40W IMS6 Series
7/13 AR
1.0
0.5
70
100
U
o [%]
t
[ms]
05041
8.5
60.5
60.5
overload short circuit condition
switch-off
40
50
60
70
80
90
[%]
05060
25 50 75 100 P
onom
[%]
Ui nom
Ui max
Ui min
Fig. 16
Overload switch-off (hiccup mode).
Frequency of pulses: 16.5 Hz, puls duration: 8.5 ms.
Fig. 17
Efficiency versus input voltage and load.
Typical values (48IMS6 -1212-9)
Industrial Environment DC/DC Converters < 40W IMS6 Series
8/13 AR
Fig. 18
Typical disturbance voltage (quasi-peak) at the input ac-
cording to CISPR 11/EN 55011 and CISPR 22/EN 55022,
measured at U
i nom
and I
o nom
. Output leads 0.1 m, twisted.
External capacitor at the input required (see: Recommen-
dations for compliance with EN 55022). (48 IMS6-1515-9)
Fig. 19
Typical radio frequency interference voltage at U
i nom
,
I
o nom
, measured with an antenna (distance 10 m). Output
leads 0.1 m, twisted (48 IMS6-1515-9).
07033
EN 55022 A
EN 55022 B
90
80
70
60
50
40
30
20
10
0
0
.01
0
.05
0.1
0.5
1
2
5
10
20
30
[dBV]
MHz
0
.02
EN 55022 B
50
40
30
20
10
0
30
50
100
200
500
1000
Frequency [MHz]
[dBV/m]
07034
Electromagnetic Emission
Conducted RFI noise at input according to EN 55022 Radiated RFI noise according to EN 55022.
Mechanical Data
Dimensions in mm. Tolerances 0.3 mm unless otherwise indicated.
European
Projection
Fig. 20
Case DIL 24, for IMX 4
Weight: <10 g
15.24
33
1
min. 3
20
12
13 24
11 x 2.54 = 27.94
09042
Measuring point of
case temperature
T
C
0.5
8.5
9/13 AR
Industrial Environment DC/DC Converters < 40W IMS6 Series
Immunity to Environmental Conditions
Table 8: Mechanical stress
Test Method Standard Test Conditions Status
Ca Damp heat IEC/DIN IEC 60068-2-3 Temperature: 40 2 C Unit not
steady state MIL-STD-810D section 507.2 Relative humidity: 93 +2/-3 % operating
Duration: 56 days
Ea Shock IEC/EN/DIN EN 60068-2-27 Acceleration amplitude: 100 gn = 981 m/s2Unit
(half-sinusoidal) MIL-STD-810D section 516.3 Bump duration: 6 ms operating
Number of bumps: 18 (3 each direction)
Eb Bump IEC/EN/DIN EN 60068-2-29 Acceleration amplitude: 40 gn = 392 m/s2Unit
(half-sinusoidal) MIL-STD-810D section 516.3 Bump duration: 6 ms operating
Number of bumps: 6000 (1000 each direction)
Fc Vibration IEC/EN/DIN EN 60068-2-6 Acceleration amplitude: 0.35 mm (10...60 Hz) Unit
(sinusoidal) MIL-STD-810D section 514.3 5 gn = 49 m/s2 (60...2000 Hz) operating
Frequency (1 Oct/min): 10...2000 Hz
Test duration: 7.5 h (2.5 h each axis)
Fda Random vibration IEC 60068-2-35 Acceleration spectral density: 0.05 gn2/Hz Unit
wide band Frequency band: 10...500 Hz operating
reproducibility Acceleration magnitude: 4.9 gn rms
high Test duration: 3 h (1 h each axis)
Kb Salt mist, cyclic IEC/EN/DIN IEC 60068-2-52 Concentration: 5% (30C) Unit not
(sodium chloride Duration: 2 h per cycle operating
NaCl solution) Storage: 40C, 93% rel. humidity
Storage duration: 22 h per cycle
Number of cycles: 3
Table 9: Temperature specifications, valid for air pressure of 800...1200 hPa (800...1200 mbar)
Temperature Standard -9
Characteristics Conditions min max Unit
T
AAmbient temperature 1 Operational 2 –40 71 C
T
CCase temperature –40 100
T
SStorage temperature 1 Non operational –40 100
1MIL-STD-810D section 501.2 and 502.2
2See
Thermal Considerations
Table 10: MTBF and device hours
MTBF Ground Benign Ground Fixed Ground Mobile Device Hours 1
MTBF acc. to MIL-HDBK-217F
T
C = 40C
T
C = 40C
T
C = 70C
T
C = 50C
48IMS6-05-9 2'651'000 h 349'000 h 124'000 h 119'000 h
1Statistical values, based on an average of 4300 working hours per year and in general field use
Industrial Environment DC/DC Converters < 40W IMS6 Series
10/13 AR
Safety and Installation Instructions
Installation Instruction
Installation of the DC-DC converters must strictly follow the
national safety regulations in compliance with the enclo-
sure, mounting, creepage, clearance, casualty, markings
and segregation requirements of the end-use application.
Connection to the system shall be made via a printed circuit
board according to:
Mechanical Data
.
The units should be connected to a secondary circuit.
Check for hazardous voltages before altering any connec-
tions.
Do not open the module.
Ensure that a unit failure (e.g. by an internal short-circuit)
does not result in a hazardous condition. See also:
Safety
of operator accessible output circuit.
Table 11: Pin allocation for standard industrial pinout
Pin Single output units Dual output units
2Vi–Vi–
3Vi–Vi–
10 n.c. -
11 - Vo–
14 Vo+ Vo+
16 Vo–Go
22 Vi+ Vi+
23 Vi+ Vi+
Table 12: Pin allocation for K pinout (option K)
Pin Single output units Dual output units
1 Vi+ Vi+
2 n.c. -
10 - Go
11 - Go
12 Vo– -
13 Vo+ Vo–
15 - Vo+
24 Vi– Vi–
Table 13: Pin allocation for SMD pinout (option M)
Pin Single output units Dual output units
2Vi–Vi–
3Vi–Vi–
10 n.c. Go
11 Vo–Vo –
12 Vo–Vo –
13 Vo+ Vo–
14 Vo+ Vo+
15 Vo+ Vo+
16 Vo–Go
22 Vi+ Vi+
23 Vi+ Vi+
1
12
13 24
10013
Bottom view
Fig. 22
Pin numbering
Input Fuse
To prevent excessive current flowing through the input sup-
ply line in case of a short-circuit across the converter input
an external fuse should be installed in a non earthed input
supply line. We recommend a fast acting fuse F0.5A
for 24 IMS 6 and F0.315A for 48 IMS 6 types.
Standards and approvals
All DC-DC converters are UL recognized according to UL
1950, UL recognized for Canada to CAN/CSA C22.2 No.
950-95 and LGA approved to IEC/EN 60950 standards.
The units have been evaluated for:
• Building in
• Supplementary insulation input to output, based on their
maximum input voltage
•The use in a pollution degree 2 environment
•Connecting the input to a secondary circuit which is sub-
ject to a maximum transient rating of 1500 V.
The DC-DC converters are subject to manufacturing sur-
veillance in accordance with the above mentioned UL,
CSA, EN and ISO 9001 standards.
Safety of operator accessible output circuits
If the output circuit of a DC-DC converter is operator acces-
sible, it shall be an SELV circuit according to IEC/EN 60950
related safety standards
The insulation concept table below shows some possible
installation configurations, compliance with which causes
the output circuit of the DC-DC converter to be an SELV cir-
cuit according to IEC/EN 60950 up to a configured output
voltage (sum of nominal voltages if in series or +/– configu-
ration) of 46 V.
However, it is the sole responsibility of the installer to en-
sure the compliance with the relevant and applicable safety
regulations. More information is given in:
Technical Infor-
mation:
Safety
.
Industrial Environment DC/DC Converters < 40W IMS6 Series
11/13 AR
24 Vi- Vi+
9 n.c. n.c.
1 Vi+ Vi+
Table 14: Electric strength test voltages
Characteristic Input - Output Unit
24/48 IMS 6
Electric strength 1.2 kVrms
test voltage 1 s 1.5 kV DC
Coupling 1.2 nF
capacitance
Insulation resist. >100 M
at 500 V DC
Partial discharge Consult factory kV
extinction voltage
AC-DC
front
end
DC-DC
con-
verter
Mains
Fuse
Battery
Earth
connection
Suppressor
diode SELV
Earth
connection
+
–
~
~
10004
Fig. 23
Schematic safety concept. Use fuse, suppressor diode
and earth connection as per table:
Safety concept leading
to an SELV output circuit
.
Table 15: Insulation concept leading to an SELV output circuit
Conditions Front end DC-DC converter Result
Supply Minimum required grade Maximum Minimum required safety Measures to achieve the Safety status of
voltage of isolation, to be provided DC output status of the front end specified safety status of the the DC-DC
by the AC-DC front end, voltage output circuit output circuit converter output
including mains supplied from the circuit
battery charger front end 1
Mains Basic 60 V Earthed SELV circuit 2 Operational insulation, pro- SELV circuit
250 V AC vided by the DC-DC converter
ELV circuit Input fuse 3 output suppressor Earthed SELV
>60 V Hazardous voltage diodes 4, and earthed circuit
secondary circuit output circuit 2
Double or reinforced 60 V SELV circuit Operational insulation, pro- SELV circuit
vided by the DC-DC converter
1The front end output voltage should match the specified input voltage range of the DC-DC converter.
2The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950.
3The installer shall provide an approved fuse (type with the lowest rating suitable for the application) in a non-earthed input line directly
at the input of the DC-DC converter (see fig.:
Schematic safety concept
). For UL’s purpose, the fuse needs to be UL-listed. See also:
Input Fuse
.
4Each suppressor diode should be dimensioned in such a way, that in the case of an insulation fault the diode is able to limit the output
voltage to SELV (<60 V) until the input fuse blows (see fig.:
Schematic safety concept
).
5Has to be insulated from earth by double or reinforced insulation according to the relevant safety standard, based on the maximum
output voltage from the front end.
Cleaning Agents
In order to avoid possible damage, any penetration of
cleaning fluids has to be prevented, since the power sup-
plies are not hermetically sealed.
Protection Degree
The protection degree of the DC-DC converters is IP 30.
Isolation
The electric strength test is performed as factory test in ac-
cordance with IEC/EN 60950 and UL 1950 and should not
be repeated in the field. Melcher will not honour any guar-
antee claims resulting from electric strength field tests.
12/13 AR
Industrial Environment DC/DC Converters < 40W IMS6 Series
Option M
Surface mount version.
Note: Precautions should be taken when reflow soldering
the SMD version, option M. The reflow soldering instruc-
tions below should be strictly adhered to. An inadequate
soldering process may permanently damage the converter
or degrade its performance and Melcher will not honour any
guarantee/warranty claims resulting from damage caused
by ignoring the soldering instructions.
Infrared soldering is not permitted.
The surface mountable version of this product is assem-
bled with high melting point solder (227C) to ensure that
the solder joints of of the internal components do not de-
grade in the end users SMD soldering process.
This product is only specified for "Forced Convection
Reflow Soldering" (Hot Air). Any conventional soldering
profile is acceptable provided that the restriction curve be-
low is not exceeded at any time during the reflow process.
Description of Options
Table 16: Survey of options
Option Function of option Characteristic
Z Available in 'open frame' version without case
M Surface mount version, SMD Not available for 5 IMX 4 and 70 IMX 4 types
K Alternative pinout Not available for 5 IMX 4 and 70 IMX 4 types as well as all types
with 3.3 V or 24 V outputs
210
220
230
240
010 20 30
T
peak
[C]
11051
40
t
[s]
50
205
215
225
235
Option K
Alternative pinout.
This option defines an alternative pinout.
Option K excludes option M and vice versa.
Fig. 24
Forced convection reflow soldering restriction curve
measured on pin 2
26.6
2.5
2
27.94 ( 11 x 2.54)
1
12
24
13
11052
26.6
2.5
2
27.94 ( 11 x 2.54)
1
12
24
13
11052
Fig. 25
Proposed solder lands.
13/13 AR
Industrial Environment DC/DC Converters < 40W IMS6 Series
Bare board construction without case. Consult factory.
