IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Features
• RoHS compliant for all six substances
• Extremely wide input voltage ranges up to 154 VDC
• 1 or 2 outputs up to 48 V
• Basic insulation: IMX models
• Class I equipment with reinforced insulation:IMYmodels
• 1200 to 3000 VAC i/o electric strength test voltage
• Electrical isolation between outputs
12.5
0.49"
63.5
2.5"
76.2
3"
• Programmable input undervoltage lockout
• Shutdown/inhibit input
• Adjustable output voltages with flexible load distribution
• Sense lines and current share option
• External frequency synchronization
• Output(s) no-load, overload, and short-circuit proof
• Operating ambient temperature from –40 to 95 °C
• Thermal protection
• Planar technology for best stability
• Metallic case with 12.5 mm profile or open frame with
9.75 mm
9.75
0.38"
47.8
1.88"
72.7
2.86"
Safety-approved to IEC/EN 60950-1 and UL/CSA 60950-1
2nd Edition. CE mark for 110IMY70.
Description
safety standards IEC/EN/UL 60950-1 2nd Edition. The con-
verters 24IMX70 and 40IMX70 exhibit basic insulation for the
specified input voltage, whereas the converters 110IMY70
have reinforced insulation.
The IMX/IMY70 Series of board-mountable 70 Watt DC-DC
converters has 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.
The circuit is comprised of 2 planar magnetic devices. The
components are automatically assembled and securely
soldered onto a single PCB without any wire connection.
Magnetic feedback ensures maximum repeatability in the
control loop over all operating conditions and best reliability.
Careful consideration of possible thermal stress ensure the
absence of hot spots, such providing long life in environments,
where temperature cycles are present. The thermal design
without using any potting material allows operation up to an
ambient temperature of 70 °C in free air and up to 100 °C with
forced cooling. For extremely high vibration environments the
case has holes for screw mounting.
Covering a total input voltage range from 14.4 V up to 154 V
with 3 different models, the converters are available with one
or two electrically isolated outputs from 5 V to 48 V, externally
adjustable and with flexible load distribution. A shutdown input
allows remote converter on/off. Features include consistently
high efficiency over the entire input voltage range, high
reliability, and excellent dynamic response to load and line
changes.
The converters are designed according to the international
Table of Contents
Page
Page
Description ............................................................................. 1
Model Selection ..................................................................... 2
Functional Description ........................................................... 3
Electrical Input Data ............................................................... 4
Electrical Output Data ............................................................ 6
Auxiliary Functions ............................................................... 10
Electromagnetic Compatibility (EMC) .................................. 11
Immunity to Environmental Conditions ................................ 12
Mechanical Data .................................................................. 13
Safety and Installation Instructions ...................................... 14
Options................................................................................. 15
MELCHER
The Power Partners.
BCD.00002 Rev AF, 18-Dec-2013
Page 1 of 15
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