Board Mountable
DC-DC Converters
IML 10 Series
10 Watt DC-DC Converters
Wide input voltage ranges up to 75 V DC
1 or 2 outputs up to 30 V DC
1500 V DC I/O electric strength test voltage
•
Electrical isolation, single and double output units
•
Immunity to IEC/EN 61000-4-2, -3, -4, -5 and -6
•
High efficiency (typ. 84%)
• Flex power: flexible load distribution
•
No load and short-circuit proof
•
High reliability and no derating
•
Operating ambient temperature range –40...60°C
•
2"
×
1" case with 10.5 mm profile
• Supplementary insulation
Safety according to IEC/EN 60950, UL 1950
LGA
IML 10 Series
25.4
1.0"
10.5
0.42"
50.8
2.0"
Summary
The IML10 series of board mountable 10 Watt DC-DC con-
verters has been designed according to the latest industry
requirements and standards. The converters are particu-
larly suitable for use in controlled environments, in battery
supported applications in industry or telecommunications
where high power densitiy and outstanding reliability are
required.
Providing 2 input voltage ranges, 18...36 and 36...75 V DC,
the units are available with single and electrically isolated
double outputs allowing the configuration of output voltages
from 5 up to 30 V DC, with flexible load distribution on dou-
ble output units. Features include efficient input and output
filtering with transient and surge protection, low output rip-
ple and noise, consistently high efficiency over the entire
input voltage range, high reliability as well as excellent dy-
namic response to load and line changes.
The converters provide supplementary insulation with
SELV outputs as e.g. required in battery supported systems
where the bus voltage may exceed the SELV limit of
60 V DC. They are designed and built according to the inter-
national safety standards IEC/EN 60950, UL 1950, CAN/
CSA C22.2 No.950-95 and are LGA and UL marked. Ap-
provals pending.
A special feature is their small case size, 2"
×
1" with
10.5 mm profile. The circuit comprises of integrated planar
magnetics and all components are automatically assem-
bled and solidly soldered onto a single PCB without any
wire connections. Magnetic feedback ensures maximum
reliability and repeatability in the control loop over all oper-
ating conditions. High efficiency, low heat dissipation and
careful considerations of possible thermal stresses ensure
the absence of hot spots providing high reliability. The ther-
mal design allows operation at full load up to an ambient
temperature of 60°C in free air without using any potting
material. Optionally the IML 10 series is available as an
open frame unit or with the industrial C pinout.
Table of Contents
Page
Page
Safety and Installation Instructions .................................. 4
Description of Options ...................................................... 5
Accessories ...................................................................... 5
Summary .......................................................................... 1
Type Survey and Key Data .............................................. 2
Type Key .......................................................................... 2
Mechanical Data .............................................................. 3
Edition 6/10.2001 R1
1/5
Board Mountable
Type Survey and Key Data
Table 1: Type survey
Output 1
U
o nom
I
o nom 1
[V DC]
[A]
3.3
3.3
5
5
12
12
15
15
5.1
12
12
15
15
1
DC-DC Converters
IML 10 Series
Output 2
U
o nom
I
o nom 1
[V DC]
[A]
-
-
-
-
-
-
-
-
3.3
12
12
15
15
-
-
-
-
-
-
-
-
1
0.45
0.45
0.35
0.35
Output
power
P
o nom
[W]
6.6
6.6
9.5
9.5
10.8
10.8
10.5
10.5
8.8
10.8
10.8
10.5
10.5
Input voltage
U
i min
...U
i max
[V DC]
18...36
36...75
18...36
36...75
18...36
36...75
18...36
36...75
36...75
18...36
36...75
18...36
36...75
Efficiency
h
typ
[%]
81
82
81
82
84
84
84
84
80
84
84
84
84
Type
designation
2
24 IML 10-03-0
48 IML 10-03-0
24 IML 10-05-0
48 IML 10-05-0
24 IML 10-12-0C
48 IML 10-12-0C
24 IML 10-15-0C
48 IML 10-15-0C
48 IML 10-0503-0
24 IML 10-12-12-0
48 IML 10-12-12-0
24 IML 10-15-15-0
48 IML 10-15-15-0
Options
2
2
1.9
1.9
0.9
0.9
0.7
0.7
1
0.45
0.45
0.35
0.35
C, Z
C, Z
C, Z
C, Z
C, Z
C, Z
C, Z
C, Z
C, Z
Flexible load distribution on double outputs possible up to 75% of the total output power
P
o nom
on one of the 2 outputs. The other
output should not exceed the difference to the total output power
P
o nom
.
2
For availability contact Power-One.
Type Key
24 IML 10 - 12 - 12 -0 C Z
Input voltage range
U
i
14...36 V DC .............................................. 24
36...75 V DC .............................................. 48
Series ...................................................................... IML 10
Output voltage for output 1 ................................ 05, 12, 15
Dash: Designates double output unit with two indepen-
dent electrically isolated outputs ................... -
Output voltage for output 2 ....................................... 12, 15
Operating ambient temperature range
T
A
–40...60°C .................................................. -0
Options:
C-pinout ...................................................... C
Open frame .................................................. Z
1
1 Not applicable for -0503 models and option C.
For delivery lead times contact factory. Some types require a minimum order quantity.
Examples:
48 IML 10-15-15-3: DC-DC converter, input voltage range 36...75 V, 2 electrically isolated outputs each pro-
viding 15 V, 0.33 A, surface mount version.
24 IML 10-1212-3C: DC-DC converter, input voltage range 18...36 V, C-pinout with outputs
±12
V,
±0.45
A.
Edition 6/10.2001 R1
2/5
Board Mountable
Mechanical Data
DC-DC Converters
IML 10 Series
European
Projection
Dimensions in mm. Tolerances
±0.3
mm unless otherwise indicated.
S09030
50.8 (2")
3.4 (0.13")
3.81(0.15")
0.8
×
1.2 (0.03 x 0.05") Pins
∅
1.6 (0.06) PCB holes
3 x 5.08 (0.2")
3.81(0.15")
4
3.81(0.15")
10
4.6 (0.18")
Measuring point
of case temperature
T
C
45.7 (1.8")
PT 2.2
self tapping screws
0.8 (0.3")
Fig. 1
Case IML 10 with standard soldering pins
Weight: <20 g
09032
50.8 (2")
35.5 (1.4")
0.5(0.02")
15.2 (0.6")
∅
1 (0.04") Pins
∅
1.2 (0.05") PCB holes
∅
1(0.04")
1
2
4
5
20.3 (0.8")
25.4 (1")
5.8 (0.2")
3
Fig. 2
Case IML 10 with C pinout (option C) for double output units, pins 6 and 7 are not fitted.
With single output units pins 4, 6 and 7 are not fitted.
Weight: <24 g
1.27 (0.05")
S90002
48 (1.9")
1
0.8
×
1.2 (0.03 x 0.05") Pins
∅
1.6 (0.06) PCB holes
23 (0.9")
3 x 5.08
(0.2")
4
3.5 (0.14")
43.2 (1.7")
10
Fig. 3
Open frame
Weight: <20 g
0.8 (0.3")
Edition 6/10.2001 R1
8.25
(0.32")
5 x 3.81
(0.15")
14
12.5
(0.49")
Measuring point of
case temperature
T
C
3.4 (0.13")
25.4 (1")
1
20.3 (0.8")
5 x 3.81
(0.15")
14
3/5
Board Mountable
DC-DC Converters
IML 10 Series
Safety and Installation Instructions
Table 2: Pin allocation IML
Pin
1
2
3
4
10
11
12
13
14
Single output
Vi+
Vi–
n.c.
n.c.
Vo–
Vo+
Vo–
n.c.
n.c.
0503 types
Vi+
Vi–
n.c.
n.c.
Go
Vo1+
Go
Vo2+
n.c.
Double outputs
Vi+
Vi–
n.c.
n.c.
Vo1–
Vo1+
Vo2–
Vo2+
n.c.
The units have been evaluated for:
• Building in
• Supplementary insulation input to output, based on their
maximum input voltage
• The use in a pollution degree 2 environment
• Connecting the input to a secondary circuit which is sub-
ject to a maximum transient rating of 1500 V
The DC-DC converters are subject to manufacturing sur-
veillance in accordance with the above mentioned UL,
CSA, EN and ISO 9001 standards.
Isolation
The electric strength test is performed as factory test in ac-
cordance with IEC/EN 60950 and UL 1950 and should not
be repeated in the field. Power-One will not honour any
guarantee claims resulting from electric strength field tests.
Table 4: Electric strength test voltages, clearance and
creepage distances
Table 3: C pinout (option C)
Pin
1
2
3
4
5
Single output
Vi+
Vi–
Vo+
no pin
Vo–
Dual output
Vi+
Vi–
Vo+
Go
Vo–
Characteristic
Electric strength
test voltage 1 s
Coupling capacitance
Isulation resistance
at 500 V DC
Partial discharge
extinction voltage
I/O
1.2
1.5
≈1.2
>100
Consult
factory
O/O
0.1
0.15
-
-
-
Unit
kV
rms
kV DC
nF
MΩ
kV
Installation Instruction
Installation of the DC-DC converters must strictly follow the
national safety regulations in compliance with the enclo-
sure, 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 according to:
Mechanical Data.
The units should be connected to a secondary circuit.
Check for hazardous voltages before altering any connec-
tions.
Do not open the module.
Ensure that a unit failure (e.g. by an internal short-circuit)
does not result in a hazardous condition. See also:
Safety
of operator accessible output circuit.
Input Fuse
To prevent excessive current flowing through the input sup-
ply line in case of a short-circuit across the converter input
an external fuse should be installed in a non earthed input
supply line. We recommend a fast acting fuse F2A for
24 IML 10 types and F1A for 48 IML 10 types.
Cleaning Agents
In order to avoid possible damage, any penetration of
cleaning fluids has to be prevented, since the power sup-
plies are not hermetically sealed.
Standards and approvals
All DC-DC converters are pending to be UL recognized ac-
cording to UL 1950, UL recognized for Canada to CAN/
CSA C22.2 No. 950-95 and LGA approved to IEC/EN
60950 standards.
Protection Degree
The protection degree of the DC-DC converters is IP 30.
Safety of operator accessible output circuit
If the output circuit of a DC-DC converter is operator acces-
sible, it shall be an SELV circuit according to IEC/EN 60950
related safety standards
The insulation concept table below shows some possible
installation configurations, compliance with which causes
the output circuit of the DC-DC converter to be an SELV cir-
cuit according to IEC/EN 60950 up to a configured output
voltage (sum of nominal voltages if in series or +/– configu-
ration) of 30 V.
However, it is the sole responsibility of the installer to en-
sure the compliance with the relevant and applicable safety
regulations. More information is given in:
Technical Infor-
mation: Safety.
Edition 6/10.2001 R1
4/5
Board Mountable
Conditions Front end
Supply
voltage
Minimum required grade
of isolation, to be provided
by the AC-DC front end,
including mains supplied
battery charger
Maximum
DC output
voltage
from the
front end
1
≤60
V
DC-DC Converters
DC-DC converter
Minimum required safety
status of the front end
output circuit
Measures to achieve the
specified safety status of the
output circuit
IML 10 Series
Result
Safety status of
the DC-DC
converter output
circuit
SELV circuit
Earthed SELV
circuit
Table 5: Insulation concept leading to an SELV output circuit
Mains
Basic
≤250
V AC
Earthed SELV circuit
2
ELV circuit
Operational insulation, pro-
vided by the DC-DC converter
Input fuse
3
output suppressor
diode(s)
4
, and earthed
output circuit(s)
2
Operational insulation, pro-
vided by the DC-DC converter
>60 V
Double or reinforced
≤60
V
>60 V
Hazardous voltage
secondary circuit
SELV circuit
TNV-2 circuit
SELV circuit
Supplementary insulation,
based on the maximum input
Double or reinforced insu-
voltage, provided by the
lated unearthed hazardous
DC-DC converter
voltage secondary circuit
5
1
2
3
4
5
The front end output voltage should match the specified input voltage range of the DC-DC converter.
The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950.
The installer shall provide an approved fuse (type with the lowest rating suitable for the application) in the non-earthed input line di-
rectly at the input of the DC-DC converter (see fig.:
Schematic safety concept).
For UL’s purpose, the fuse needs to be UL-listed. See
also:
Input Fuse.
Each suppressor diode should be dimensioned in such a way, that in the case of an insulation fault the diode is able to limit the output
voltage to SELV (<60 V) until the input fuse blows (see fig.:
Schematic safety concept).
Has to be insulated from earth by basic insulation according to the relevant safety standard, based on the maximum output voltage
from the front end.
Fuse
AC-DC
front
end
Battery
DC-DC
con-
verter
10004
~
Mains
Suppressor
diode
SELV
+
~
–
Earth
connection
Earth
connection
Fig. 4
Schematic safety concept. Use fuse, suppressor diode
and earth connection as per table:
Safety concept leading
to an SELV output circuit.
Description of Options
Table 6: Survey of options
Option
C
Z
Function of option
C-pinout
Open frame
Option C
The C-pinout configures the electrically isolated double out-
puts to the "industrial pinout" Vo1+, Vo2– with common
ground Go. With the C-pinout the converter height is in-
creased by the adapter PCB (see also:
Mechanical Data).
Accessories
Mounting supports for chassis and DIN-rail mounting.
Edition 6/10.2001 R1
5/5
FPGA/CPLD
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