IMX7, IMS7 Series Data Sheet

7-Watt DC-DC Converters

BCD20007-G Rev AF, 31-Jul-2015

Page 1 of 14

MELCHER

The Power Partners.

50.8

2.0"

25.4

1.0"

10.5

0.42"

Features

• RoHS lead-free-solder and lead-solder-exempted

products are available.

• Input voltage ranges up to 150 VDC

• 1 or 2 isolated outputs up to 48 V

• 1500 to 2000 VAC voltage withstand test

• Extremely wide input voltage ranges

• Immunity according to IEC/EN 61000-4-2, -3, -4, -5, -6

• High efficiency (typ. 84%)

• Input undervoltage lockout

• Inhibit input, adjustable output voltages

• Flex power: flexible load distribution on outputs

• Outputs no-load, overload, and short-circuit proof

• High reliability and no derating

• Operating ambient temperature – 40 to +85 °C

• Thermal protection

• Supplementary insulation

• Planar technology for best mechanical stability

• 2” × 1” case with 10.5 mm profile

Description

The IMX7/IMS7 Series of board-mountable 7 Watt DC-DC

converters have 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 telecom, where variable

input voltages or high transient voltages are prevalent.

Covering a total input voltage range from 8.4 V to 150 V with

six different models, the converters are available with single

and electrically-isolated double outputs from 3.3 up to 48 V

with flexible load distribution on double outputs. A shutdown

input allows remote on/off.

Features include efficient input and output filtering with good

transient and surge protection, low output ripple and noise,

consistently high efficiency over the entire input voltage range,

and high reliability as well as excellent dynamic response to

load and line changes.

The converters provide supplementary insulation with SELV

outputs as for instances required in battery-supported

systems, where the bus voltage may exceed the SELV limit of

60 V. The models 70IMX7 and 110IMX7 are CE-marked.

The circuitry is comprised of integral planar magnetics. All

components

are

automatically

assembled

and

securely

soldered onto a single PCB without any wire connections.

Magnetic

feedback

ensures

maximum

reliability

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 ambient temperature of 85 °C in

free air without using any potting material. For extremely high

vibration environments the case has holes for screw mounting.

Several options, such as open-frame, provide a high level of

application-specific engineering and design-in flexibility.

Safety-approved to IEC 60950-1 and UL/CSA 60950-1

1

Table of Contents

Page

Page

Copyright © 2015, Bel Power Solutions Inc. All rights reserved.

Description ............................................................................. 1

Model Selection ..................................................................... 2

Functional Description ........................................................... 3

Electrical Input Data ............................................................... 4

Electrical Output Data ............................................................ 7

Auxiliary Functions ................................................................. 9

Electromagnetic Compatibility (EMC) .................................. 11

Immunity to Environmental Conditions ................................ 12

Mechanical Data .................................................................. 13

Safety and Installation Instructions ...................................... 13

Description of Options ......................................................... 14