20IMX4-12-8 Datasheet, PDF (11/12 Pages) Power-One – IMX4 Series Data Sheet 4 Watt DC-DC Converters

IMX4 Series Data Sheet
®
4 Watt DC-DC Converters
Safety and Installation Instructions
Installation Instruction
Installation of the dc-dc converters must strictly follow the
national safety regulations in compliance with the enclosure,
mounting, creepage, clearance, casualty, markings and
segregation requirements of the end-use application.
Connection to the system shall be made via a printed circuit
board; see Mechanical Data.
The converters should be connected to a secondary circuit.
Do not open the converter.
Ensure that a converter failure does not result in a hazardous
condition.
To prevent excessive current flowing through the input lines in
case of a short-circuit, an external fuse specified in table 6
should be installed in the non-earthed input supply line.
Pin Allocation
Fig. 18
Foot print
10013a
13
24
Bottom view
12
1
Table 12: Pin allocation for standard and option Z
Pin Single-output models
Dual-output models
2
Vi–
Vi–
3
Vi–
Vi–
10
n.c.
--
11
--
Vo–
14
Vo +
Vo+
16
Vo –
Go
22
Vi+
Vi+
23
Vi+
Vi+
Table 13: Pin allocation for option K
Pin Single-output models
1
Vi+
2
n.c.
10
--
11
--
12
Vo –
13
Vo +
15
--
24
Vi–
Dual-output models
Vi+
--
Go
Go
--
Vo–
Vo+
Vi–
Standards and Approvals
The converters are approved according to UL/CSA 60950,IEC
60950-1:2001 and IEC/EN 60950 -1 2^nd Edition.
The converters have been evaluated for:
• Building-in
• Basic insulation input to output, based on their maximum
input voltage
• Pollution degree 2 environment
• Connecting the input to a secondary circuit, which is subject
to a maximum transient rating of 1500 V for 20IMX4 and
40IMX4, and 2000 V for 70IMX4 models.
The converters are subject to manufacturing surveillance in
accordance with the above mentioned standards and with ISO
9001:2000.
Railway Applications
To comply with railway standards, all components are coated
with a protective lacquer (except option Z).
Protection Degree
The protection degree of the converters is IP 30, except open-
frame models (option Z).
Cleaning Liquids
In order to avoid possible damage, any penetration of cleaning
fluids should be prevented, since the power supplies are not
hermetical sealed.
However, open-frame models (option Z) leave the factory
unlacquered; they may be lacquered by the customer, for
instance together with the mother board. Cleaning agents are
not permitted – except washing at room temperature with
isopropyl alcohol. If necessary, the mother board must be
cleaned, before fitting the open-frame converter.
Note: Cleaning liquids may damage the adhesive joints of the
ferrite cores.
Isolation
The electric strength test is performed in the factory as routine
test in accordance with EN 50116 and IEC/EN 60950, and
should not be repeated in the field. Power-One will not honor
any warranty claims resulting from electric-strength field tests.
Table 14: Electric strength test voltages
Characteristic
Input to output
Unit
5IMX4 20/40IMX4 70IMX4
Factory test >1 s
0.77
Equivalent DC test voltage 1.0
Coupling capacitance
2.2
Insulation resist. (500 VDC) --
1.2
1.5
typ. 1.1
>100
1.5 kVAC
2.0 kVDC
typ. 1.1 nF
>100 MΩ
BCD20006-G Rev AC, 06-Jul-2012
Page 11 of 12
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