®
IMX7/IMS7 DC-DC Series Data Sheet
7-Watt DC-DC Converters
Features
•
RoHS lead-free-solder and lead-solder-exempted
products are available.
•
Input voltage ranges up to 150 VDC
•
1 or 2 isolated outputs up to 48 V
•
1200 to 2000 VAC I/O electric strength test
•
Extremely wide input voltage ranges
•
Immunity according to IEC/EN 61000-4-2, -3, -4, -5, -6
•
High efficiency (typ. 84%)
• Input undervoltage lockout
• Inhibit input, adjustable output voltages
• Flex power: flexible load distribution on outputs
•
Outputs no-load, overload, and short-circuit proof
•
High reliability and no derating
•
Operating ambient temperature – 40 to +85 °C
•
Thermal protection
• Supplementary insulation
25.4
1.0"
10.5
0.42"
50.8
2.0"
•
2” × 1” case with 10.5 mm profile
Safety according to IEC/EN 60950 and UL 60950
1
Description
The IMX7/IMS7 Series of board-mountable 7 Watt DC-DC
converters have been designed according to the latest industry
requirements and standards. The converters are particularly
suitable for use in mobile or stationary applications in
transport, railways, industry, or telecom, where variable input
voltages or high transient voltages are prevailent.
Covering a total input voltage range from 8.4 V to 150 V with
six different models, the converters are available with single
and electrically-isolated double outputs from 3.3 up to 48 V
with flexible load distribution on double outputs. A shutdown
input allows remote on/off.
Features include efficient input and output filtering with good
transient and surge protection, low output ripple and noise,
consistently high efficiency over the entire input voltage range,
and high reliability as well as excellent dynamic response to
load and line changes.
The converters provide supplementary insulation with SELV
outputs as for instances required in battery-supported
systems, where the bus voltage may exceed the SELV limit of
1
70/110IMX7 models
60 V. The converters have been approved by UL. In addition,
70IMX7 and 110IMX7 models are CE-marked.
The circuitry is comprised of integral planar magnetics. All
components are automatically assembled and securely
soldered onto a single PCB without any wire connections.
Magnetic feedback ensures maximum reliability and
repeatability in the control loop over all operating conditions.
Careful considerations of possible thermal stresses ensure the
absence of hot spots, providing long life in environments,
where temperature cycles are a reality. The thermal design
allows operation at full load up to an ambient temperature of
85 °C in free air without using any potting material. For
extremely high vibration environments the case has holes for
screw mounting.
Several options, such as open-frame, provide a high level of
application-specific engineering and design-in flexibility.
Table of Contents
Page
Page
Electromagnetic Compatibility (EMC) .................................. 11
Immunity to Environmental Conditions ................................ 12
Mechanical Data .................................................................. 13
Safety and Installation Instructions ...................................... 13
Description of Options ......................................................... 14
EC Declaration of Conformity .............................................. 15
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Description ............................................................................. 1
Model Selection ..................................................................... 2
Functional Description ........................................................... 3
Electrical Input Data ............................................................... 4
Electrical Output Data ............................................................ 7
Auxiliary Functions ................................................................. 9
BCD20007-G Rev AD, 4-Nov-09
Page 1 of 15
®
IMX7/IMS7 DC-DC Series Data Sheet
7-Watt DC-DC Converters
Model Selection
Table 1: Model Selection
Output 1
V
o1 nom
I
o1 nom
[ V]
[A]
1
3.3
3.3
3.3
3.3
3.3
3.3
5.1
5.1
5.1
5.1
5.1
5.1
12
12
15
15
5
5
5
5
5
5
12
12
12
12
12
12
15
15
15
15
15
15
24
24
24
24
24
24
1
2
3
4
Output 2
V
o2 nom
I
o2 nom
[ V]
[A]
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
5
5
5
5
5
5
12
12
12
12
12
12
15
15
15
15
15
15
24
24
24
24
24
24
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.6
0.7
0.7
0.7
0.7
0.7
0.25
0.3
0.3
0.3
0.3
0.3
0.2
0.24
0.24
0.24
0.24
0.24
0.13
0.15
0.15
0.15
0.15
0.15
Output power
P
o nom
[W ]
5
5
5
5
5
5
6.1
6.1
6.1
6.1
6.1
6.1
7.2
7.2
7.2
7.2
6
7
7
7
7
7
6
7.2
7.2
7.2
7.2
7.2
6
7.2
7.2
7.2
7.2
7.2
6.2
7.2
7.2
7.2
7.2
7.2
Input voltage
range
[ V]
8.4 – 36
14 – 36
16.8 – 75
3
36 – 75
40 – 121
60 – 150
8.4 – 36
14 – 36
16.8 – 75
3
36 – 75
40 – 121
60 – 150
14 – 36
36 – 75
14 – 36
36 – 75
8.4 – 36
14 – 36
16.8 – 75
3
36 – 75
40 – 121
36 – 75
8.4 – 36
14 – 36
16.8 – 75
3
36 – 75
40 – 121
60 – 150
8.4 – 36
14 – 36
16.8 – 75
3
36 – 75
40 – 121
60 – 150
8.4 – 36
14 – 36
16.8 – 75
3
36 – 75
40 – 121
60 – 150
Efficiency
η
typ
[%]
79
79
81
79
79
79
80
81
81
82
80
80
84
84
84
84
82
83
83
83
82
82
84
84
84
84
83
84
84
84
84
84
83
84
84
84
84
84
83
84
Model
Options
2
1.5
1.5
1.5
1.5
1.5
1.5
1.2
1.2
1.2
1.2
1.2
1.2
0.6
0.6
0.48
0.48
0.6
0.7
0.7
0.7
0.7
0.7
0.25
0.3
0.3
0.3
0.3
0.3
0.2
0.24
0.24
0.24
0.24
0.24
0.13
0.15
0.15
0.15
0.15
0.15
20IMX7-03-8
24IMS7-03-9
4
40IMX7-03-8
48IMS7-03-9
4
70IMX7-03-8
110IMX7-03-8
20IMX7-05-8
24IMS7-05-9
40IMX7-05-8
48IMS7-05-9
70IMX7-05-8
110IMX7-05-8
24IMS7-12-9C
4
48IMS7-12-9C
4
24IMS7-15-9C
4
48IMS7-15-9C
4
20IMX7-05-05-8
24IMS7-05-05-9
40IMX7-05-05-8
48IMS7-05-05-9
70IMX7-05-05-8
110IMX7-05-05-8
20IMX7-12-12-8
24IMS7-12-12-9
40IMX7-12-12-8
48IMS7-12-12-9
70IMX7-12-12-8
110IMX7-12-12-8
20IMX7-15-15-8
24IMS7-15-15-9
40IMX7-15-15-8
48IMS7-15-15-9
70IMX7-15-15-8
110IMX7-15-15-8
20IMX7-24-24-8
24IMS7-24-24-9
40IMX7-24-24-8
48IMS7-24-24-9
70IMX7-24-24-8
110IMX7-24-24-8
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Z, G
Flexible load distribution on double outputs possible.
If only one output voltage is required, connect both outputs of double-output models in parallel.
Operation at low input voltage possible, if
P
o
is reduced to approx. 80% of
P
o
nom at
V
i min
= 14.1 V.
Not for new designs
BCD20007-G Rev AD, 4-Nov-09
Page 2 of 15
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®
IMX7/IMS7 DC-DC Series Data Sheet
7-Watt DC-DC Converters
Part Number Description
Input voltage range
V
i
8.4 – 36 V .............................................. 20
14 – 36 V ............................................... 24
16.8 – 75 V ............................................ 40
36 – 75 V ............................................... 48
40 – 121 V ............................................. 70
60 – 150 V ........................................... 110
Series .............................................................. IMX7, IMS7
Output voltage of output 1 ...................... 03, 05, 12, 15, 24
Output voltage of output 2 ............................ 05, 12, 15, 24
Operating ambient temperature
T
A
–40 to 85 °C ............................................... -8
–40 to 71 °C ............................................... -9
Options:
Example:
Open frame .................................................. Z
RoHS compliant for all six substances ......... G
40IMX7-05-05-8ZG: DC-DC converter, input voltage range 16.8 – 75 V, 2 outputs providing each 5 V, 700 mA,
temperature range – 40 to 85 °C, open frame, RoHS compliant for all six substances.
40 IMX7 - 05 - 05 -8 Z G
Obsolete
options:
Surface mount version ............................... M
C-pinout ...................................................... C
Functional Description
The IMX7/IMS7 Series DC-DC converters are feedback-
controlled flyback converters using current mode PWM (Pulse
Width Modulation).
In the case of single-output models, the output is directly
sensed and fed back to the primary control circuit via a pulse
transformer, resulting in tight regulation of the output voltage.
The R input is referenced to the secondary side and allows for
programming the output voltages in the range 75 to 105% of
V
o nom
, using either an external resistor or an external voltage
source.
For double-output models, the output voltage is sensed by a
separate transformer winding close to the secondary and fed
03025
03042a
Vi+
1
11
Vo1+
Trim (R)
4
PWM
i
3
10
Vo1–
13
Vo2+
Vi –
2
2
×
2200 pF
12
Vo2–
14
n.c.
Vi+
1
11
Vo+
Fig. 2
Block diagram for dual-output models with standard pinout.
back to the primary control circuit. Close magnetic coupling is
provided by the planar construction, ensuring very good
regulation, and allowing for flexible load distribution. The Trim
input of double-output models is referenced to the primary
side, and allows for programming the output voltages in the
range of 100 to 105%
of V
o nom
by means of an external
resistor, or within 75 to 100% of
V
o nom
, using an external
voltage source.
Current limitation is provided by the primary circuit, thus
limiting the total output current (I
o nom
for the single- and the
sum
I
o1 nom
+
I
o2 nom
for double-output models).
The inhibit input i allows remote control of the outputs; pin i
must be connected to Vi– to activate the converter.
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PWM
i
3
10
Vo–
2
×
2200 pF
1500 V
Vi–
2
13
R
12
n.c.
4
14
n.c.
Fig. 1
Block diagram for single-output models with standard pinout.
BCD20007-G Rev AD, 4-Nov-09
Page 3 of 15
®
IMX7/IMS7 DC-DC Series Data Sheet
7-Watt DC-DC Converters
Electrical Input Data
General conditions:
– T
A
= 25 °C, unless
T
C
is specified.
– Connector pin i connected with Vi–.
– Trim or R input not connected.
Table 2a: Input data of IMX7
Input
Characteristics
V
i
V
i nom
V
i sur
t
start up
Input voltage range
1
Nominal input voltage
Repetitive surge voltage
Converter
2
start-up time
Rise time
2
switch on
inh. release
Conditions
T
C min
–
T
C max
I
o
= 0 –
I
o nom
abs. max input (3 s)
Worst case condition at
V
i min
and full load
V
i nom
I
o nom
resistive load
capacitive load
0.25
min
8.4
20
50
5
0.5
0.1
5
12
15
4.7
–10
2.4
+0.8
–10
30
5
12
8
0.5
+0.8
–10
2.4
15
20IMX7
typ
max min
36
16.8
6
40
100
0.25 0.5
0.1
5
12
8
0.2
+0.8 –10
15
40IMX7
typ max min
75
40
70
150
0.25 0.5
0.1
5
12
8
0.2
+0.8
15
mA
μF
V
0.25 0.5
0.1
ms
s
70IMX7
110IMX7
typ max Unit
150
110
V
typ max min
121 60
t
rise
I
i o
C
i
V
inh
No load input current
Input capacitance
Inhibit voltage
I
o
= 0,
V
i min
–
V
i max
(for surge calculation)
converter operating
converter inhibited
V
i max
2.4
V
i max
or open
or open
–0.5
1
3
3.8
3.7
approx. 400
30
B
–0.5
1
3
V
i max
2.4
V
i max
or open
or open
–0.5
1
3
4.2
5.6
approx. 300
10
B
– 0.5
1
3
A
kHz
mA
pp
mA
I
inh
I
i inh
I
inr p
f
s
I
i rr
V
i RFI
1
Inhibit current
converter operating
converter inhibited
Input current when the
converter is inhibited
Inrush peak current
Switching frequency
Reflected ripple current
Input RFI level conducted
V
i min
–
V
i max
V
i
=
V
i nom 4
V
i min
–
V
i max
,
I
o
= 0 –
I
o nom
I
o
= 0 –
I
o nom
EN 55022
3
B
approx. 400
50
approx. 400
20
B
2
3
4
5
6
V
i min
will not be as stated, if
V
o
is increased above
V
o nom
by use of the R or Trim input. If the output voltage is set to a higher value,
V
i min
will be proportionally increased.
Measured with a resistive and the max. admissible capacitive load.
Measured with a lead length of 0.1 m, leads twisted. Double-output models with both outputs in parallel. 70/110 IMX7 models need an
external capacitor at the input, e.g., 1
μF
film or ceramic.
Source impedance according to ETS 300132-2, version 4.3, at
V
i nom
.
The DC-DC converter shuts down automatically at approx. 38 V.
Operation at lower input voltage possible:
P
o
approx. 80% of
P
o nom
at
V
i min
= 14.4 V.
V
o
V
o nom
t
rise
04008a
t
start up
t
Fig. 3
Converter start-up and rise time
BCD20007-G Rev AD, 4-Nov-09
Page 4 of 15
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®
IMX7/IMS7 DC-DC Series Data Sheet
7-Watt DC-DC Converters
Table 2b: Input data of IMS7; general conditions as in table 2a
Input
Characteristics
V
i
V
i nom
V
i sur
t
start up
Input voltage range
1
Nominal input voltage
Repetitive surge voltage
Converter
2
start-up time
Rise time
2
switch on
inh. release
Conditions
T
C min
–
T
C max
I
o
= 0 –
I
o nom
abs. max input (3 s)
Worst case condition at
V
i min
and full load
V
i nom
I
o nom
resistive load
capacitive load
0.25
min
14
24
50
0.5
0.1
5
12
12
0.8
–10
2.4
or open
I
inh
I
i inh
I
inr p
f
s
I
i rr
V
i RFI
1
24IMS7
typ
max
36
min
36
48IMS7
typ
max
75
48
100
0.25
0.5
0.1
5
12
24
6
0.5
+0.8
V
i max
–10
2.4
or open
–0.5
1
3
3
3.9
approx. 330
40
30
B
A
kHz
mA
pp
mA
+0.8
V
i max
12
mA
μF
V
ms
s
Unit
V
t
rise
I
i o
C
i
V
inh
No load input current
Input capacitance
Inhibit voltage
I
o
= 0,
V
i min
–
V
i max
(for surge calculation)
converter operating
converter inhibited
Inhibit current
converter operating
converter inhibited
–0.5
1
Input current when the
converter is inhibited
Inrush peak current
Switching frequency
Reflected ripple current
Input RFI level conducted
V
i min
–
V
i max
V
i
=
V
i nom 4
V
i min
–
V
i max
,
I
o
= 0 –
I
o nom
I
o
= 0 –
I
o nom
EN 55022
3
B
4.0
approx. 330
2
3
4
V
i min
will not be as stated, if
V
o
is increased above
V
o nom
by use of the R or Trim input. If the output voltage is set to a higher value,
V
i min
will be proportionally increased.
Measured with a resistive and the max. admissible capacitive load.
Measured with a lead length of 0.1 m, leads twisted. Double-output models with both outputs in parallel. 70/110 IMX7 models need an
external capacitor at the input, e.g., 1
μF
film or ceramic.
Source impedance according to ETS 300132-2, version 4.3, at
V
i nom
BCD20007-G Rev AD, 4-Nov-09
Page 5 of 15
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