Rugged Environment
DC-DC Converters <40 W
IMX 7-Family
7 W DC-DC Converters
IMX 7-Family
Input/output isolation test voltage up to 1500 V
rms
Single, double outputs of 3.3, 5, 12, 15 and 24 V DC
Input voltage ranges: 8.4...36 V DC, 16.8...75 V DC
and 40...121 V DC
• Extremely wide input voltage ranges
• Galvanic isolation, single and double output units
• High efficiency (typ. >84%)
• Inhibit input, output voltage adjustable
• No load and short-circuit proof
• High reliability and no derating
w
ne
• Operating ambient temperature ranges from
–25...+71°C up to –40...+85°C
• Emissions below EN 55 022 level B.
• Immunity to IEC 1000- 4 -2, -3, -4, -5 and -6
• 2" × 1" case with 10.5 mm profile
Safety according to IEC 950
LGA
1
C
1 For 70 IMX types
Table of Contents
Page
Type Survey .............................................................. 6 - 17
Description ................................................................6 - 17
Functional Description............................................... 6 - 18
Safety and Installation Instructions ........................... 6 - 19
Electrical Input and Output Data ............................... 6 - 20
Description of Options............................................... 6 - 22
Electromagnetic Compatibility EMC.......................... 6 - 24
Supplementary Data ................................................. 6 - 25
Immunity to Environmental Conditions...................... 6 - 27
Mechanical Data ....................................................... 6 - 28
Type Key and Product Marking ................................. 6 - 29
Type Survey
Table 1: Type survey
Output 1
Uo nom Io nom [A]
Output 2
Uo nom Io nom [A]
Input Voltage Range and Efficiency
Option
3
Ui min...Ui max
8.4...36 V DC
ηtyp
Ui min...Ui max
ηtyp
Ui min...Ui max
ηtyp
[%]
1
2
1
2
[V DC]
[V DC]
[%]
16.8...75 V DC
[%]
40...121 V DC
3.3
5.1
1.5 1.5
1.2 1.2
20 IMX 7-03-7
20 IMX 7-05-7
77
80
40 IMX 7-03-7
40 IMX 7-05-7
78
81
70 IMX 7-03-7
70 IMX 7-05-7
77
81
-8
-9
D
X
M
C
5
0.6 0.7
0.25 0.3
0.2 0.24
0.13 0.15
5
0.6 0.7
0.25 0.3
20 IMX 7-05-05-7 82
20 IMX 7-12-12-7 84
0.2 0.24 20 IMX 7-15-15-7 84
0.13 0.15 20 IMX 7-24-24-7 84
40 IMX 7-05-05-7 83
40 IMX 7-12-12-7 84
40 IMX 7-15-15-7 84
40 IMX 7-24-24-7 84
70 IMX 7-05-05-7 82
70 IMX 7-12-12-7 83
70 IMX 7-15-15-7 83
70 IMX 7-24-24-7 83
12
15
24
12
15
24
1 Values for 20 IMX 7 types (output power approx. 6 W)
2 Values for 40 IMX 7 and 70 IMX 7 types
3 See table 8: "Survey of options"
Description
A special feature is their small case size, 2" × 1" with 10.5
mm height. Generous design margins have been applied.
The circuit is mounted on a single PCB, all components
solidly soldered without any wire connections and no pot-
ting material is applied. The thermal design allows opera-
tion at nominal load up to an ambient temperature of 85°C
in free air. For extremely high vibration environments the
case has holes allowing screw mounting.
The IMX 7 series has been designed according to the latest
industry requirements and standards (1995) and is particu-
larly suitable for industrial and telecom applications. The
converters are ideal for use in applications where variable
input voltages or high input transients are prevalent, e.g.
mobile applications. They feature consistently high effi-
ciency over the entire input voltage range, high reliability
and good dynamic response to line and load changes.
Edition 2/96 - © Melcher AG
6 - 17
MELCHER
The Power Partners.
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