Board Mountable
DC-DC Converters
IMO Series
6...12 Watt DC-DC Converters
Input voltage range up to 72 V DC
1 or 2 outputs up to 30 V DC
1500 V DC I/O electric strength test voltage
•
Input voltage range up to 4:1
•
Input filter
•
High efficiency up to 80%
•
Outputs short-circuit proof
•
No derating
•
2"
×
1" metal case
•
Low cost
IMO Series
25.4
1.0"
12
0.47"
50.8
2.0"
Summary
The IMO 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 IMO converters fea-
ture good efficiency and good dynamic response to load
changes and at start-up. The IMO modules are short-cir-
cuit and no-load proof.
Type Survey and Key Data
Table 1: Type survey
Output 1
Output 2
Output power
T
A
= 71°C
P
o nom
[W]
5
5
10
10
5
5
12
12
6
6
12
12
6
6
12
12
5
5
6
6
12
12
6
6
12
12
Input voltage
U
i min
...
U
i max
[V DC]
10...36
18...72
18...60
35...75
10...36
18...72
18...60
35...75
10...36
18...72
18...60
35...75
10...36
18...72
18...60
35...75
10...36
18...72
10...36
18...72
18...60
35...75
10...36
18...72
18...60
35...75
Efficiency
Type designation
Option
U
o nom
[V]
3.3
3.3
3.3
3.3
5
5
5
5
12
12
12
12
15
15
15
15
+5
+5
+12
+12
+12
+12
+15
+15
+15
+15
I
o nom
[mA]
1500
1500
3000
3000
1000
1000
2400
2400
500
500
1000
1000
400
400
800
800
500
500
250
250
500
500
200
200
400
400
U
o nom
[V]
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
–5
–5
–12
–12
–12
–12
–15
–15
–15
–15
I
o nom
[mA]
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
500
500
250
250
500
500
200
200
400
400
U
i nom,
I
o nom
h
min
[%]
63
63
70
70
68
70
70
70
73
75
76
76
73
76
80
80
68
70
72
75
80
80
73
76
80
80
24 IMO 6-03-2
48 IMO 6-03-2
24 IMO 12-03-2
48 IMO 12-03-2
24 IMO 6-05-2
48 IMO 6-05-2
24 IMO 12-05-2
48 IMO 12-05-2
24 IMO 6-12-2
48 IMO 6-12-2
24 IMO 12-12-2
48 IMO 12-12-2
24 IMO 6-15-2
48 IMO 6-15-2
24 IMO 12-15-2
48 IMO 12-15-2
24 IMO 6-0505-2
48 IMO 6-0505-2
24 IMO 6-1212-2
48 IMO 6-1212-2
24 IMO 12-1212-2
48 IMO 12-1212-2
24 IMO 6-1515-2
48 IMO 6-1515-2
24 IMO 12-1515-2
48 IMO 12-1515-2
-7
Table of Contents
Page
Page
Electrical Output Data ...................................................... 3
Immunity to Environmental Conditions ........................... 4
Electromagnetic Compatibility (EMC) ............................. 4
Mechanical Data .............................................................. 5
Safety and Installation Instructions ................................. 5
1/7
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
IMO Series
24 IMO 6 - 12 12 -2
Nominal input voltage in volt .................................. 24...48
Series .......................................................................... IMO
Nominal output power in watt .................................... 6, 12
Nominal output voltage for output 1 in volt ............ 03...15
Nominal output voltage for output 2 in volt ............ 05...15
Operational ambient temperature range
T
A
Standard: –10...50°C ................................ -2
Option:
–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 2: Input data
Input
Characteristics
Conditions
24 IMO 6
min typ max
10
24
0
75
25
1.5
P
i nom
0
8
1.25
P
i nom
36
24 IMO 12
min typ max
18
24
65
0
12
1.5
P
i nom
60
48 IMO 6
min
18
48
75
0
8
1.25
P
i nom
typ max
72
48 IMO 12
min typ max
35
48
80
mA
W
75
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
shunt diode use external fuse
Edition 4/04.2001
2/7
Board Mountable
Electrical Output Data
DC-DC Converters
IMO Series
General condition:
T
A
= 25°C unless otherwise specified
Table 3a: Output data for single output types
Output
Characteristics
Conditions
IMO 6-03
min
3.24
1500
100 150
typ max
3.36
IMO 6-05
min typ max
4.90
1000
100 150
IMO 6-12
min typ max
IMO 6-15
min
typ max
15.30
400
100 150
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
I
o nom
(BW = 20 MHz)
5.10 11.76
500
12.24 14.70
100 150
D
U
o U
D
U
o I
Static line regulation
Static load regulation
Transient recovery time
Temperature coefficient
Switching frequency
U
i min
...
U
i max
I
o nom
U
i nom
I
o nom
...0
I
o nom
↔
1
/
2
U
i nom
I
o nom
±2
500
±1
±2
500
±0.02
200
200
±1
±2
500
±0.02
200
±1
±2
500
±0.02
200
±1
%
t
r
a
Uo
µs
±0.02
%/K
kHz
f
s
Table 3b: Output data for single output types
Output
Characteristics
Conditions
IMO 12-03
min
3.24
3000
150
typ max
3.36
IMO 12-05
min
4.90
2400
150
typ max
IMO 12-12
min typ max
IMO 12-15
min
typ max
15.30
800
240
300
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
I
o nom
(BW = 20 MHz)
5.10 11.76
1000
12.24 14.70
D
U
o U
D
U
o I
Static line regulation
Static load regulation
Transient recovery time
Temperature coefficient
Switching frequency
U
i min
...
U
i max
I
o nom
U
i nom
I
o nom
...0
I
o nom
↔
1
/
2
U
i nom
I
o nom
±2
500
±1
±2
500
±0.02
200
200
±1
±2
500
±0.02
200
±1
±2
500
±0.02
200
±1
%
t
r
a
Uo
µs
±0.02
%/K
kHz
f
s
Table 3c: Output data for dual output types
Output
Characteristics
Conditions
IMO 6-0505
min
±4.90
±500
100
150
typ
max
±5.10
IMO 6-1212
min
±11.76
±250
100
150
typ
max
±12.24
IMO 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
I
o nom
(BW = 20 MHz)
D
U
o U
D
U
o I
Static line regulation
Static load regulation
Transient recovery time
Temperature coefficient
Switching frequency
U
i min
...
U
i max
I
o nom
U
i nom
I
o nom
...0
I
o nom
↔
1
/
2
U
i nom
I
o nom
±5
500
±1
±5
500
±0.02
200
200
±1
±5
500
±0.02
200
±1
%
t
r
a
Uo
µs
±0.02
%/K
kHz
f
s
Edition 4/04.2001
3/7
Board Mountable
Table 3d: Output data for dual output types
Output
Characteristics
Conditions
DC-DC Converters
IMO 12-1212
min
±11.76
±500
240
typ
max
±12.24
IMO 6-1515
min
±14.70
±400
300
typ
max
±15.30
Unit
V
mA
mV
pp
IMO Series
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
I
o nom
(BW = 20 MHz)
D
U
o U
D
U
o I
Static line regulation
Static load regulation
Transient recovery time
Temperature coefficient
Switching frequency
U
i min
...
U
i max
I
o nom
U
i nom
I
o nom
...0
I
o nom
↔
1
/
2
U
i nom
I
o nom
±5
500
±1
±5
500
±0.02
200
200
±1
%
t
r
a
Uo
µs
±0.02
%/K
kHz
f
s
Thermal Considerations
If a converter is operated, the relationship between the
ambient temperature
T
A
and the case temperature
T
C
de-
pends heavily on the conditions of operation and integra-
tion into a system. The thermal conditions are influenced
by input voltage, output current, airflow, temperature of
surrounding components and surfaces and the properties
of the printed circuit board. The specified maximum ambi-
ent temperature
T
A max
is therefore only an indicative value
and under practical operating conditions, the ambient tem-
perature
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
specified maximum value. The installer must ensure
that under all operating conditions
T
C
remains within
the limits stated in the table:
Temperature specifica-
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.
05090
Unit 1
Vo+
+U
o
COM
Vo–
tions.
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.
Vo+
Unit 2
COM
Vo–
–
U
o
Fig. 3
Outputs connected in series
Edition 4/04.2001
4/7
Board Mountable
DC-DC Converters
IMO 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 ex-
ternal input filter consisting of additional capacitors and a
choke.
07028
The filter components should be placed as close as possi-
ble to the input of the converter.
07029
Vi+
C
1
C
2
L
1
C
i
Vi–
C
1
C
2
L
1
Vi+
Vi–
Fig. 4
Input filter arrangement for 24 and 40 V DC types
Table 4: Input filter components
Types
24 IMO 6
Fig. 5
Input filter arrangement for 48 V DC types
C
1
2.2
µF
100 V
1
µF
1
100 V
3.3
µF
50 V
2.2
µF
1
100 V
C
2
2.2
µF
100 V
1
µF
1
100 V
3.3
µF
50 V
2.2
µF
1
100 V
Type
Siemens
B 32522-
C1225-K
Siemens
B 32522-
C1105-K
Siemens
B 32529-
C5335-K
Siemens
B 32522-
C1225-K
L
1
2.2 mH
Type
Siemens
B 82722-
A2202-N1
Ticomel
SO 17-0.63
–500
Siemens
B 82723
A2202-N1
Siemens
B 82722
A2202-N1
C
i
2.2
µF
100 V
–
Type
Siemens
B 32522-
C1225-K
48 IMO 6
0.5 mH
24 IMO 12
5.6 mH
3.3
µF
50 V
1
µF
100 V
Siemens
B 32529-
C5335-K
Siemens
B 32522-
C1105-K
48 IMO 12
2.2 mH
1
Only valid for input voltages up to 60 V DC.
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
–25
–25
max
50
80
80
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
Edition 4/04.2001
5/7
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