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
• 1500 to 3000 VAC i/o electric strength test voltage
• Electrical isolation between outputs
• Programmable input undervoltage lockout
• Shutdown/inhibit input
12.5
0.49"
63.5
2.5"
76.2
3"
• 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
9.75
0.38"
• Planar technology for best stability
47.8
1.88"
72.7
2.86"
• Metallic case with 12.5 mm profile or open frame with
9.75 mm
Safety-approved to IEC/EN 60950-1 and UL/CSA 60950-1
2nd Edition. CE mark for 110IMY70.
Description
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.
specified input voltage, whereas the converters 110IMY70
have reinforced insulation.
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 en-
vironments, 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
safety standards IEC/EN/UL 60950-1 2nd Edition. The con-
verters 24IMX70 and 40IMX70 exhibit basic insulation for the
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
Copyright © 2015, Bel Power Solutions Inc. All rights reserved.
MELCHER
The Power Partners.
BCD.00002 Rev AH, 17-Aug-2015
Page 1 of 15