IMS25 25-Watt DC-DC Converter Data Sheet
Features
Wide input voltage ranges up to 75 V DC
Single output up to 15 V DC
1500 V DC I/O electric strength test voltage
• RoHS lead-solder-exempt compliant
• Industry standard pin-out
• Fixed frequency operation
• High efficiency up to 90%
• 2" x 1.6" platform with 8.5 mm profile without and
10.5 mm profile with case
• Soft start
10.5
54.9
0.41"
2.16"
54.9
2.16"
• Shut down input, output voltages adjustable
• Programmable input undervoltage lockout
• Outputs no-load, overload and short-circuit proof
• Operating ambient temperature –40...105oC
• Thermal protection with auto-reset (non latching)
• Basic insulation
• Immunity to IEC/EN 61000-4-2,-3,-4,-5 and -6
Safety according to IEC/EN 60950, UL 1950
8.2
LGA
41.2
0.32"
1.62"
Approvals pending
50.8
2."
Description
The converters provide basic insulation with SELV outputs
as e.g., required in battery supported systems where the
bus voltage may exceed the SELV limit of
60 VDC. They are designed and built according to the in-
ternational safety standards IEC/EN 60950, UL 1950, CAN/
CSA C22.2 No.950-95.
The IMS25 Series of board-mountable 25 watt DC-DC con-
verters has been designed according to the latest industry
requirements and standards. The converters are particu-
larly suitable for applications in industry and telecommuni-
cation where variable input voltages or high transient volt-
ages are prevalent.
The circuit comprises integrated planar magnetics and all
components are automatically assembled and soldered
onto a single PCB without any wire connections. The pro-
prietary magnetic feedback solution ensures maximum reli-
ability 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 ambi-
ent temperature of 71 °C in free air without using any potting
material. For extremely high vibration environments the ca-
se has holes for screw mounting.
Providing two wide input voltage ranges, 14 to 36 VDC and
32 to 75 VDC, the units are available with a single output
voltage from 2.5 VDC up to 16.5 VDC externally adjust-
able. A shut down input allows remote converter on/off.
Features include efficient input and output filtering with un-
surpassed transient and surge protection, low output ripple
and noise, consistently high efficiency over the entire input
voltage range, high reliability as well as excellent dynamic
response to load and line changes.
Page
Temperature Derating ..................................................... 5
Auxiliary Functions .......................................................... 6
Electromagnetic Compatibility (EMC) ............................. 7
Immunity to Environmental Conditions ........................... 8
Mechanical Data ............................................................. 9
Safety and Installation Instructions ............................... 10
Description of Option .................................................... 11
Table of Contents
Page
Description......................................................................... 1
Type Survey and Key Data ............................................. 2
Type Key ......................................................................... 2
Functional Description .................................................... 2
Electrical Input Data ........................................................ 3
Electrical Ouput Data ...................................................... 4
MAR 04, 2002 revised to APR 17, 2006
Page 1 of 11
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