Rugged Environment
DC-DC Converters <40 Watt
IMX 35 Series
35 Watt DC-DC Converters
IMX 35 Series
Input to output electric strength test up to 4 kV DC
Input voltage: 9...36, 18...75 V DC
2, 3 and 4 outputs
Configurable output voltages from 3.3 to 60 V DC
• Extremely wide input voltage ranges
• Electrical isolation, also between outputs
• Emissions below EN 55022, level B
• Immunity to IEC/EN 61000-4-2,-3,-4,-5 and -6
• Programmable input undervoltage lock-out
• Shut down input
10.5
0.41"
63.5
76.2
2.5"
3"
• Output voltages adjustable with flexible load distribu-
tion
• Frequency synchronisation
• Outputs no-load, overload and short-circuit proof
• Operating ambient temperature up to –40...85°C
• Thermal protection
• 3"× 2,5" case with 10.5 mm profile or 8.9 mm open
frame
• Supplementary insulation
8.9
0.35"
47.8
1.88"
72.8
2.87"
Safety according to IEC/EN 60950, UL 1950
LGA
Approvals pending
Summary
tion. Connected to a secondary circuit the 40 IMX 35 types
provide SELV outputs even if the voltage at the converter
input exceeds the SELV-limit of 60 V DC.
The IMX 35 series of board mountable 35 Watt DC-DC con-
verters has been designed according to the latest industry
requirements and standards. The converters are particu-
larly suitable for use in mobile or stationary applications in
transport, railways, industry, or telecommunication where
variable input voltages or high transient voltages are preva-
lent.
The circuit comprises of two planar magnetics devices 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 condi-
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 without using any potting material allows opera-
tion at full load up to an ambient temperature of 71°C in free
air. For extremely high vibration environments the case has
holes for screw mounting. Various options as e.g. extended
temperature range –40...85°C or an alternative pinout pro-
vide a high level of application specific engineering and de-
sign-in flexibility.
Covering a total input voltage range from 9 up to 75 V with
2 different types. The units are available with double, triple
and quadruple outputs, electrically isolated, from 3.3 V up
to 60 V externally adjustable and with flexible load distribu-
tion. A shut down input allows remote converter on-off. Fea-
tures include consistently high efficiency over the entire in-
put voltage range, high reliability and excellent dynamic re-
sponse to load and line changes.
The converters are designed and built according to the in-
ternational safety standards IEC/EN 60950, UL 1950, CAN/
CSA C22.2 No.950-95. LGA, UL and cUL approvals are in
progress. The IMX 35 types provide supplementary insula-
Table of Contents
Page
Page
Auxiliary Functions ......................................................... 11
Electromagnetic Compatibility (EMC) ............................ 13
Immunity to Environmental Conditions........................... 14
Mechanical Data ............................................................ 15
Safety and Installation Instructions ................................ 16
Description of Option...................................................... 18
Summary.......................................................................... 1
Type Survey and Key Data .............................................. 2
Type Key .......................................................................... 3
Functional Description...................................................... 4
Electrical Input Data ......................................................... 6
Electrical Output Data ...................................................... 8
Edition 1/10.99
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