Board Mountable
DC-DC Converters
IMR 6 Series
6 Watt DC-DC Converters
Input voltage range up to 72 V DC
1 output up to 30 V DC
500 V DC I/O electric strengh test voltage
•
Input voltage range up to 3 :1
•
Input filter
•
Outputs short-circuit proof
•
No derating
•
2
×
2" plastic case
•
Low cost
IMR 6-Series
51
2.0"
12
0.47"
51
2.0"
Summary
The IMR 6 series of DC-DC converters have been devel-
oped for powering commercial type of electronic circuits,
e.g. telephone systems components, industrial controllers
and small appliances. They are suitable for applications
with standard battery voltages. The IMR 6 converters fea-
ture good efficiency and good dynamic response to load
changes and at start-up. The IMR 6 modules are short-cir-
cuit and no-load proof.
Type Survey and Key Data
Table 1: Type survey
Output
U
o nom
I
o nom
[V]
[mA]
3.3
5
12
15
±5
±12
±15
1500
1000
500
400
±500
±250
±200
Output power Efficiency
1
T
A
= 71°C
h
min
P
o nom
[W]
[%]
5
5
6
6
5
6
6
63
63
68
68
67
70
70
Input voltage range
U
i min
...U
i max
U
i min
...U
i max
18...36 V DC
20...60 V DC
24 IMR 6-03-2
24 IMR 6-05-2
24 IMR 6-12-2
24 IMR 6-15-2
24 IMR 6-0505-2
24 IMR 6-1212-2
24 IMR 6-1515-2
40 IMR 6-03-2
40 IMR 6-05-2
40 IMR 6-12-2
40 IMR 6-15-2
40 IMR 6-0505-2
40 IMR 6-1212-2
40 IMR 6-1515-2
Option
U
i min
...U
i max
9...18 V DC
12 IMR 6-03-2
12 IMR 6-05-2
12 IMR 6-12-2
12 IMR 6-15-2
12 IMR 6-0505-2
12 IMR 6-1212-2
12 IMR 6-1515-2
U
i min
...U
i max
36...72 V DC
48 IMR 6-03-2
48 IMR 6-05-2
48 IMR 6-12-2
48 IMR 6-15-2
48 IMR 6-0505-2
48 IMR 6-1212-2
48 IMR 6-1515-2
-7
1 Effiency at
U
i nom
and
I
o nom
Table of Contents
Page
Page
Electrical Output Data ...................................................... 3
Electromagnetic Compatibility (EMC) .............................. 4
Immunity to Environmental Conditions ............................. 4
Mechanical Data .............................................................. 4
Safety and Installation Instructions .................................. 5
1/6
Summary .......................................................................... 1
Type Survey and Key Data .............................................. 1
Type Key .......................................................................... 2
Functional Description ...................................................... 2
Electrical Input Data ......................................................... 2
Edition 4/04.2001
Board Mountable
Type Key
Type Key
DC-DC Converters
IMR 6 Series
24 IMR 6 - 12 12 -2
Nominal input voltage in volt ................................... 12...48
Series .......................................................................... IMR
Nominal output power in watt ........................................... 6
Nominal output voltage for output 1 in volt .............. 05...15
Nominal output voltage for output 2 in volt .............. 05...15
Operational ambient temperature range
T
A
–10...50°C .................................................. -2
–25...71°C .................................................. -7
Functional Description
03034
03035
Vi+
Shunt diode,
Filter
Shunt diode,
Filter
Vo+
Vi+
Ref.
Control
Vo+
COM
Control
Ref.
Vo–
Vi–
Vi–
Vo–
Fig. 1:
Single output converter block diagram
Fig. 2:
Dual output converter block diagram
Electrical Input Data
General condition:
T
A
= 25°C unless otherwise specified
Table 2a: Input data
Input
Characteristics
Conditions
min
9
12
0
22
22
1.25
P
i nom
shunt diode
use external fuse
0
26
1.25
P
i nom
shunt diode
use external fuse
12 IMR 6
typ
max
18
min
18
24
40
mA
W
24 IMR 6
typ
max
36
Unit
V DC
U
i
U
i nom
U
i
I
i 0
I
i L
U
i rev
Input voltage range
Nominal input voltage
Input voltage without
damage
No load input current
Input current limitation
response
Reverse input voltage
protection
T
A min
...T
A max
I
o
= 0...I
o nom
U
i nom
,
I
o
= 0
U
i nom
, full load
U
i
= negative or
reverse polarity
Table 2b: Input data
Input
Characteristics
Conditions
min
20
36
0
75
26
1.25
P
i nom
shunt diode
use external fuse
0
26
1.25
P
i nom
shunt diode
use external fuse
40 IMR 6
typ
max
60
min
36
48
75
mA
W
48 IMR 6
typ
max
72
Unit
V DC
U
i
U
i nom
U
i
I
i 0
I
i L
U
i rev
Input voltage range
Nominal input voltage
Input voltage without
damage
No load input current
Input current limitation
response
Reverse input voltage
protection
T
A min
...T
A max
I
o
= 0...I
o nom
U
i nom
,
I
o
= 0
U
i nom
, full load
U
i
= negative or
reverse polarity
Edition 4/04.2001
2/6
Board Mountable
Electrical Output Data
DC-DC Converters
IMR 6 Series
General condition:
T
A
= 25°C unless otherwise specified
Table 3a: Output data for single output types
Output
Characteristics
Conditions
.. IMR 6-03
min typ max
3.24
1500
100 150
3.36
.. IMR 6-05
min typ
4.90
1000
100 150
max
5.10
.. IMR 6-12
min typ max
11.76
500
100 150
12.24
.. IMR 6-15
min typ max
14.70
400
100 150
15.30
Unit
V
mA
mV
pp
U
o
I
o nom
u
o
Output voltage
Nominal output current
Output voltage noise
U
i nom
,
I
o nom
U
i min
...U
i max
U
i nom
(0...1)
I
o nom
(BW = 20 MHz)
U
i min
...U
i max
I
o nom
U
i nom
(0.2...1)
I
o nom
U
i nom
I
o nom
D
U
o U
D
U
o I
a
Uo
Static line regulation
Static load regulation
Temperature coefficient
Switching frequency
±1
±2
±0.02
50
50
±2
±1
±2
±0.02
50
±1
±2
±0.02
50
±1
%
±0.02
%/K
kHz
f
s
Table 3b: Output data for dual output types
Output
Characteristics
Conditions
.. IMR 6-0505
min
±4.90
±500
100
150
typ
max
±5.10
.. IMR 6-1212
min
±11.76
±250
100
150
typ
max
±12.24
.. IMR 6-1515
min
±14.70
±200
100
150
typ
max
±15.30
Unit
V
mA
mV
pp
U
o
I
o nom
u
o
Output voltage
Nominal output current
Output voltage noise
U
i nom
,
I
o nom
U
i min
...U
i max
U
i nom
(0.2...1)
I
o nom
(BW = 20 MHz)
U
i min
...U
i max
I
o nom
U
i nom
(0.2...1)
I
o nom
U
i nom
I
o nom
D
U
o U
D
U
o I
a
Uo
Static line regulation
Static load regulation
Temperature coefficient
Switching frequency
±1
±5
±0.02
50
50
±5
±1
±5
±0.02
50
±1
%
±0.02
%/K
kHz
f
s
Thermal Considerations
If a converter is operated, the relationship between the am-
bient temperature
T
A
and the case temperature
T
C
depends
heavily on the conditions of operation and integration into a
system. The thermal conditions are influenced by input volt-
age, output current, airflow, temperature of surrounding
components and surfaces and the properties of the printed
circuit board. The specified maximum ambient temperature
T
A max
is therefore only an indicative value and under practi-
cal operating conditions, the ambient temperature
T
A
may
be higher or lower than this value.
Caution:
The case temperature
T
C
measured at the
Measuring point of case temperature T
C
(see:
Mechani-
cal Data)
may under no circumstances exceed the speci-
fied maximum value. The installer must ensure that un-
der all operating conditions
T
C
remains within the limits
stated in the table:
Temperature specifications.
Connection in Series
The outputs of one or more units can be connected in se-
ries. No suppressor diodes are required. Power-One how-
ever recommends to protect each individual output with a
Zener diode or preferably a suppressor diode, to avoid re-
verse polarity that may occur if the output voltages do not
rise simultaneously.
Edition 4/04.2001
Connection in Parallel
Connecting the outputs of two or more converters in paral-
lel is not recommended due to uneven power distribution
among the outputs.
Protection Scheme
The IMR series is continuously short circuit protected by
means of input power limitation. The unit will not be dam-
aged if started up into a short circuit. After removal of the
short circuit, it will resume normal operation.
The IMR series is also no-load proof, meaning that the
regulation is still effective with no load and the output volt-
age does not rise. However, due to component tolerances,
oscillation could occur and ripple and noise can be outside
of specified values. If the converter is used in senitive elec-
tronic circuits with no-load conditions, it is recommended to
pre-load the outputs with at least 20% of the specified nomi-
nal load.
3/6
Board Mountable
DC-DC Converters
IMR 6 Series
Electromagnetic Compatibility (EMC)
Filter recommendations for compliance with
CISPR 22/EN 55022, class B
Electromagnetic emission requirements according to EN
55022, class B can be easely achieved by adding an exter-
nal input filter consisting of additional capacitors and a
choke.
The filter components should be placed as close as possi-
ble to the input of the converter.
C
1
C
2
L
1
C
i
Vi–
07028
Vi+
Fig. 3
Input filter arrangement for 12, 24 and 40 V DC types
Table 4: Input filter components
Input voltage
12, 24, 40, 48 V DC
C
1
2.2
µF
100 V
C
2
2.2
µF
100 V
Type
Siemens
B 32522-
C1225-K
L
1
2.2 mH
Type
Siemens
B 82722-
A2202-N1
C
i
2.2
µF
100 V
Type
Siemens
B 32522-
C1225-K
Immunity to Environmental Conditions
Table 5: Temperature specifications, valid for air pressure of 800...1200 hPa (800...1200 mbar)
Temperature
Characteristics
Conditions
Standard -2
min
–10
–10
–25
max
50
80
85
min
–25
–25
–40
Option -7
max
71
80
100
Unit
°C
T
A
T
C
T
S
Ambient temperature
Case temperature
Storage temperature
U
i nom
I
o
= 0...I
o nom
Non operational
Table 6: MTBF
MTBF
MTBF according to MIL-HDBK-217F, N2
Ground Benign
40°C
3'332'000 h
Ground Fixed
40°C
647'200 h
Ground Mobile
50°C
244'600 h
Mechanical Data
Dimensions in mm. Tolerances
±0.3
mm unless otherwise specified.
50.8
09035
European
Projection
min. 5
12
22.86
5.08
ø1
Vi–
Vi+
20.32
Vo+
COM
Vo–
15.24 10.2 10.2
Fig. 5
Case 2"
×
2"
Weight: 50 g
Measuring point of case temperature
T
C
Edition 4/04.2001
15.24
50.8
4/6
Board Mountable
DC-DC Converters
IMR 6 Series
Safety and Installation Instructions
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.
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.
Standards and approvals
The units have been evaluated for:
• Building in
• Operational insulation input to output
• 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.
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.
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 F3.15A for
12 IMR 6 types, F1.6A for 24 IMR 6, F0.8A for 40 IMR 6 and
48 IMR 6 types.
Cleaning Agents
In order to avoid possible damage, any penetration of
cleaning fluids is to be prevented, since the power supplies
are not hermetically sealed.
Protection Degree
The protection degree of the DC-DC converters is IP 40.
Table 7: Electric strength test voltages, clearance and
creepage distances
Characteristic
Electric strength
test voltage 1 s
Coupling capacitance
Isulation resistance
at 500 V DC
Input to output
350
500
≈320
>1000
Unit
V
rms
V DC
pF
MΩ
Edition 4/04.2001
5/6
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