110IMY70-12-0ITG [BEL]
DC-DC Regulated Power Supply Module,;
| 型号： | 110IMY70-12-0ITG |
| 厂家： | 
BEL FUSE INC. |
| 描述： | DC-DC Regulated Power Supply Module, |
| 文件： | 总15页 (文件大小：858K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Features
• RoHS compliant for all six substances
• Extremely wide input voltage ranges up to 154 VDC
• 1 or 2 outputs up to 48 V
• Basic insulation: IMX models
• Class I equipment with reinforced insulation:IMYmodels
• 1200 to 3000 VAC i/o electric strength test voltage
• Electrical isolation between outputs
12.5
0.49"
63.5
2.5"
76.2
3"
• Programmable input undervoltage lockout
• Shutdown/inhibit input
• Adjustable output voltages with flexible load distribution
• Sense lines and current share option
• External frequency synchronization
• Output(s) no-load, overload, and short-circuit proof
• Operating ambient temperature from –40 to 95 °C
• Thermal protection
• Planar technology for best stability
• Metallic case with 12.5 mm profile or open frame with
9.75 mm
9.75
0.38"
47.8
1.88"
72.7
2.86"
Safety-approved to IEC/EN 60950-1 and UL/CSA 60950-1
2nd Edition. CE mark for 110IMY70.
Description
safety standards IEC/EN/UL 60950-1 2nd Edition. The con-
verters 24IMX70 and 40IMX70 exhibit basic insulation for the
specified input voltage, whereas the converters 110IMY70
have reinforced insulation.
The IMX/IMY70 Series of board-mountable 70 Watt DC-DC
converters has 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 telecommunication, where
variable input voltages or high transient voltages are
prevalent.
The circuit is comprised of 2 planar magnetic devices. The
components are automatically assembled and securely
soldered onto a single PCB without any wire connection.
Magnetic feedback ensures maximum repeatability in the
control loop over all operating conditions and best reliability.
Careful consideration of possible thermal stress ensure the
absence of hot spots, such providing long life in environments,
where temperature cycles are present. The thermal design
without using any potting material allows operation up to an
ambient temperature of 70 °C in free air and up to 100 °C with
forced cooling. For extremely high vibration environments the
case has holes for screw mounting.
Covering a total input voltage range from 14.4 V up to 154 V
with 3 different models, the converters are available with one
or two electrically isolated outputs from 5 V to 48 V, externally
adjustable and with flexible load distribution. A shutdown input
allows remote converter on/off. Features include consistently
high efficiency over the entire input voltage range, high
reliability, and excellent dynamic response to load and line
changes.
The converters are designed according to the international
Table of Contents
Page
Page
Description ............................................................................. 1
Model Selection ..................................................................... 2
Functional Description ........................................................... 3
Electrical Input Data ............................................................... 4
Electrical Output Data ............................................................ 6
Auxiliary Functions ............................................................... 10
Electromagnetic Compatibility (EMC) .................................. 11
Immunity to Environmental Conditions ................................ 12
Mechanical Data .................................................................. 13
Safety and Installation Instructions ...................................... 14
Options................................................................................. 15
MELCHER
The Power Partners.
BCD.00002 Rev AF, 18-Dec-2013
Page 1 of 15
IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Model Selection
Table 1: Model Selection
Output 1
Output 2
Input voltage
Effic. η1
Model
Opt.
2
2
Vo nom
[V]
Ionom
[A]
Vo nom
[V]
Ionom
[A]
Vi min
[V]
Vi cont
[V]
Vi max
[V]
min.
[%]
typ.
[%]
5.1
5.1
5.1
12
12
12
-
-
-
-
-
-
12
21.6
43.2
15 to 33.6
25 to 72
50 to 137.5
40.1
75
154
24IMX70-05-0TG 3
40IMX70-05-0TG 3
110IMY70-05-0TG
i, Z
i, Z
i, Z
i, Z
87
90
89
93
12
12
12
7.0
7.5
7.5
-
-
-
-
-
-
12
21.6
43.2
15 to 33.6
25 to 72
50 to 137.5
40.1
75
154
24IMX70-12-0TG
40IMX70-12-0TG 3
110IMY70-12-0TG
90
90
93
92
15
15
15
5.7
6.0
6.0
-
-
-
-
-
-
12
21.6
43.2
15 to 33.6
25 to 72
50 to 137.5
40.1
75
154
24IMX70-15-0TG
40IMX70-15-0TG 3
110IMY70-15--0TG
90
87
93
90
24
24
24
1.3
1.3
1.3
24
24
24
1.3
1.3
1.3
12
21.6
43.2
15 to 33.6
25 to 72
50 to 137.5
40.1
75
154
24IMX70-24-24-0G
40IMX70-24-24-0G 3
110IMY70-24-24-0G
89
91
1
2
3
Efficiency at TA = 25 °C, Vi nom, Io nom
Short time; see table 2 for details
Contact Power-One for lead times and availability.
Note: The sequence of options/features must follow the order above.
Part Number Description
110 IMY70 - 24 -24 -0 i Z G
Input voltage Vi
24 V battery ................................................ 24
36 V and 48 V battery ................................. 40
72 V, 96 V, 110 V battery .......................... 110
Series .......................................................... IMX70, IMY70
Output voltage of output 1............................ 05, 12, 15, 24
Output voltage of output 2............................ 05, 12, 15, 24
Operating ambient temperature range
TA = –40 to 95 °C ....................................... -0
Options:
Inhibit ........................................................... -i
Current sharing function ............................ T 1
Open frame .................................................. Z
Feature:
RoHS-compliant for all 6 substances ....... G 2
1
Standard feature for single-output models, not available for dual-output models
G is standard and is placed at the end of the part number
2
Note: The sequence of options/features must follow the order above.
Product Marking
Converters without option Z are marked with the type
designation, input and output voltages and currents,
applicable safety approval and recognition marks, company
logo, date code, and serial no.
MELCHER
The Power Partners.
BCD.00002 Rev AF, 18-Dec-2013
Page 2 of 15
IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
The output voltage is transferred to the primary side by
magnetic feedback via a pulse transformer. The 2nd output is
tracking. The close magnetic coupling of the main transformer
and the main choke guarantee minor deviation of both output
voltages. Both outputs can be simultaneously adjusted by the
R input located on the secondary side.
Functional Description
The IMX/IMY70 Series converters are comprised of a
feedback-controlled forward converter using current-mode
pulse width modulation (PWM). The switching frequency is
fixed; it can by externally synchronized for double-ouput
models. The main transformer and the output choke are
designed in planar technology, which guarantees excellent
mechanical features and reproducibility of electric properties.
No optocouplers are used.
A current limitation circuits limits the possible output power.
The topology allows for single-output models an unlimited
output capacity and for double-output models a high output
capacity; see Electrical Output Data.
Single-output converters exhibit at the output a synchronous
rectifier and sense lines to ensure accurate output voltage
regulation. An auxiliary input R allows adjustment of the output
voltage. Proper parallel operation is possible using the current
sharing feature.
An incorporated protection disables the converter in an
overtemperature condition. The converter automatically
recovers, after the temperature has dropped below the limit.
The input voltage is monitored, shutting down the converter in
an overvoltage condition. The minimum input voltage for start-
up can be externally adjusted, which helps to limit the input
current at low input voltage.
Double-output converters exhibit Schottky diodes at both
outputs. The first output voltage is sensed and accurately
regulated by influencing the PWM via the magnetic feedback.
PUL
1
n.c.1
6
JM027c
1 kΩ
7
8
Ref
SD
T
11
Primary
Secondary
control circuit
19
R
control circuit
Synchr. rect.
drive
13 S+
Opt. i
Vi+ 2
Vi+
5
4
16
NTC
Vo+
17
Input
filter
14
Vi–
2
3
Vo–
15
Auxiliary
converter
350 kHz
Vi– 2
18
S–
Cy
Cy
12
n.c.1
1
2
Not connected
Connected for 24IMX models only
Fig. 1
Block diagram of single-output models
PUL
1
W
6
JM026c
1 kΩ
11 n.c.1
7
Ref
Primary
control circuit
Secondary
control circuit
8
SD
R
19
Opt. i
PTC
13 Vo2+
14 Vo2–
Vi+ 2
Vi+
5
4
Input
filter
Vo1+
16
Vi–
2
3
Vi– 2
15 Vo1–
n.c.1
18
Cy
Cy
17
12
n.c.1
n.c.1
1
2
Not connected
Connected for 24IMX models only
Fig. 2
Block diagram of double-output models
MELCHER
The Power Partners.
BCD.00002 Rev AF, 18-Dec-2013
Page 3 of 15
IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Electrical Input Data
General conditions:
TA = 25°C, shutdown and R pin left open-circuit, unless specified.
Table 2: Input data
Input
24IMX70
typ
40IMX70
typ
Unit
Characteristics
Conditions
min
max
min
max
Vi
Operating input voltage
TA min to TA max, Io = 0 – Io nom
15 1
33.6
25 1
72
VDC
Vi nom
Vi 2s
Vi sur
tstart up
Nominal input voltage
Temporary input voltage
Repetitive surge voltage
24
(36) 48
for 2 s, no shutdown
shutdown, no damage
12 1
40.1
50
21.6 1
75
100
Converter
Switch on Worst case condition at
500
1000
1000
ms
––
start-up time
Vi min and full load
SD high
trise
Ii o
Rise time
Vi = 0 → Vi nom, Io nom
Io = 0, Vi min – Vi max
Io = 0 – Io nom
25
No-load input current
Reflected ripple current
Inrush peak current
Input capacitance
200
mA
mApp
A
Iirr
30
Iinr p
Ci
Vi = Vi max
25
24
for surge calculation
Converter disabled
Converter operating
µF
––
VSD
Shutdown voltage
–0.7 to +0.7
– 0.7 to +0.7
V
2 to 20 (or open-circuit)
2 to 20 (or open-circuit)
––
I SD
Shutdown pin current
Input current at shutdown
Switching frequency
– 0.2
mA
––
Ii SD
Vi min – Vi max
2
fs
Vi min – Vi max, Io = 0 – Io nom
200 2
210 2
200
kHz
Input
110IMY70
typ
Unit
Characteristics
Conditions
min
max
Vi
Operating input voltage
TA min to TA max, Io = 0 – Io nom
50
137.5
VDC
Vi nom
Vi 2s
Vi sur
tstart up
Nominal input voltage
Temporary input voltage
Repetitive surge voltage
(72, 96,) 110
250
for 2 s, no shutdown
shutdown, no damage
43.2 1
154
168
500
500
50
Converter
Switch on
Worst case condition at
Vi min and full load
ms
––
start-up time
SD high
trise
Rise time
single-outp. Vi = 0 → Vi nom, Io nom
double-outp.
10
25
20
Ii o
No-load input current
Reflected ripple current
Inrush peak current
Input capacitance
Io = 0, Vi min – Vi max
Io = 0 – Io nom
50
mA
mApp
A
Iirr
200
Iinr p
Ci
Vi = Vi max
35
7.7
for surge calculation
Converter disabled
Converter operating
µF
––
VSD
Shutdown voltage
–0.7 to +0.7
V
2 to 20 (or open-circuit)
––
I SD
Shutdown pin current
–0.2
mA
––
Ii SD
Input current at shutdown Vi min – Vi max
Switching frequency Vi min – Vi max, Io = 0 – Io nom
2
210 2
fs
200 2
kHz
1
Vi min will not be as stated, if Vo is increased above Vo nom by use of R-input. If the output voltage is set to a higher value, Vi min will be
proportionately increased.
typ. 240 kHz for single-output models, typ. 300 kHz for models with 5 V output
2
MELCHER
The Power Partners.
BCD.00002 Rev AF, 18-Dec-2013
Page 4 of 15
IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Inrush Current
Input Transients Protection
The inrush current has been kept as low as possible by
choosing a very small input capacitance. A series resistor may
be installed in the input line, in order to further reduce this
current.
When Vi exceeds 154 V, the converter is temporarily disabled.
Furthermore, a built-in suppressor diode provides effective
protection against higher input transients, which may be
generated for example by short-circuits across the input lines.
Table 4: Built-in transient voltage suppressor
A
JM028
Model
Breakdown
voltage
Peak power
at 1 ms
Peak pulse
current
40
VBr nom [V]
Pp [kW]
Ipp [A]
30
20
24IMX70
40IMX70
110IMY70
56
1.5
0.6
19.4
2.5
10
176
t
µs
60
0
20
40
For very high energy transients as for example to achieve
IEC/EN 61000-4-5 compliance (as per table Electromagnetic
Immunity) an external inductor and capacitor are required. The
components should have similar characteristics as listed in
table below.
Fig. 3
Inrush current at Vi nom, Po nom versus time (110IMY70-24-24-
8). Source impedance according to ETS 300132-2: L = 10
µH, R = 1.5 Ω.
Table 5: Components for external circuitry to comply with
IEC/EN 61000-4-5; see table 10
Vo
trise
04008b
Vo nom
Model
Inductor (L)
Capacitor (C)
24IMX70
40IMX70
110IMY70
--
330 µF / 100 V
t
--
150 µF / 200 V
tstartup
Fig. 4
Converter start-up and rise time
JM029
L
Vi+
Vi–
+
C
Reverse Polarity Protection and Fuse
The built-in suppressor diode also provides for reverse
polarity protection at the input by conducting current in the
reverse direction. An external fuse is required to limit this
current.
Fig. 5
Example for external circuitry to comply with IEC/EN 61000-
4-5; see table 10
Table 3: Recommended external fuses in the non-earthed
input line
Converter model
Fuse type
Rating
24IMX70 single-output
24IMX70 double-output
40IMX70 single-output
40IMX70 double-output
Littlefuse 166
Littlefuse 166
10 A, 80 V
10 A, 80 V
110IMY70 single-output Littlefuse 372
110IMY70 double-output Littlefuse 372
3.15 A, 250 V
3.15 A, 250 V
MELCHER
The Power Partners.
BCD.00002 Rev AF, 18-Dec-2013
Page 5 of 15
IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Electrical Output Data
General conditions:
– TA = 25 °C, unless TC is specified
– Shutdown pin not connected
– R-pin not connected
Table 6: Output data for single-output models
Output
5.1 V
12 V
typ
Unit
Characteristics
Conditions
min
typ
5.1
12
max
min
max
Vo
Output voltage
Vi nom, 0.5 Io nom
Vi min – Vi max
5.07
5.13
11.94
12.0
7.0
7.5
7.5
8.0
12.06
V
A
Io nom
Output current
24IMX
40IMX
12
110IMY
24IMX
12
IoL
Current limit1
Vi nom, TC = 25 °C
Vo = 93% Vo nom
7.5
8.5
8.5
40IMX
110IMY
13.6
13.9
14.4
±0.5
8.8
9.2
∆Vo
Line/load regulation
Vi min – Vi max
,
±0.5
%
(0.1 – 1) Io nom
2
3
Vo noise Output voltage noise
Vi min – Vi max
Io = Io nom
100
50
150
80
mVpp
Vo OS
Vo L
Co ext
Vo d
td
Output overshot at turn-on
Output overvoltage limit
Capacitive load
Vi min – Vi max
0.1
7.0
0.24
15
V
Min. load 1%
6.0
13
unlimited
unlimited
±1800
µF
mV
ms
Dynamic
load
Voltage deviat. Vi nom
o nom ↔ 1/
Io nom
I
2
Recovery time
regulation
α Vo
Temperature coefficient
∆Vo/∆TC
Vi min – Vi max
Io = (0.1 to 1) Io nom
±0.02
±0.02
%/K
1
Rectangular characteristic Vo/Io
BW = 20 MHz, measured with an external capacitor of 1 µF across each pair of output pins.
Measured with a probe according to EN 61204
2
3
MELCHER
The Power Partners.
BCD.00002 Rev AF, 18-Dec-2013
Page 6 of 15
IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Table 7: Output data for single- and double-output models; general condition as per table 6.
Output
15 V
typ
2 × 24 V
Unit
Characteristics
Conditions
min
max
min
typ
max
Vo
Output voltage
Vi nom, 0.5 Io nom
14.93
15.0
5.7
15.08
23.88
24.0
24.12
V
A
Io nom
Output current
24IMX Vi min – Vi max
2 × 1.3
40IMX
6.0
6.0
2 × 1.3
2 × 1.3
3.15
110IMY
IoL
Current limit 1
24IMX Vi nom, TC = 25 °C
6.2
6.6
7.0
3.0
3.0
3.0
3.3
3.3
Vo = 93% Vo nom
40IMX
3.15
110IMY
7.5
3.15
3.3
∆Vo
Line/load regulation
Vi min – Vi max
,
±0.5
±0.5
%
(0.1 – 1) Io nom
2
3
Vo noise Output voltage noise
Vi min – Vi max
Io = Io nom
150
100
0.3
18
200
150
mVpp
Vo OS
Vo L
Co ext
Vo d
td
Output overshot at turn-on
Output overvoltage limit4
Admissible capacitive load 5
Vi min – Vi max
0.48
V
Min. load 1%
16.8
unlimited
0
1500 6
±0.02
µF
Dynamic
load
Voltage deviat. Vi nom
o nom ↔ 1/
Io nom
±1500
1
mV
I
2
Recovery time
ms
regulation
α Vo
Temperature coefficient
Vi min – Vi max
±0.02
%/K
∆Vo/∆TC
Io = (0.1 to 1) Io nom
1
The current limit is primary side controlled. In an overload condition the thermal protection may cause the converter to shut down
(automatic restart on cool-down).
2
3
4
5
6
BW = 20 MHz, measured with an external capacitor of 1 µF across each output pins.
Measured with a probe according to EN 61204
Both outputs of double-output models are protected by a suppressor diode.
Both outputs of double-output models connected in parallel. For series connection, only 1/4 of the capacitance is possible.
1000 µF for 110IMY70-24-24 produced before 2012
MELCHER
The Power Partners.
BCD.00002 Rev AF, 18-Dec-2013
Page 7 of 15
IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Io / Io nom
Thermal Considerations
JM118
1.0
0.8
0.6
Fig. 6a and 6b specify the admissible output power of a
converter, mounted on a printed circuit board, located in free
environment, exposed to an airflow with the ambient
temperature TA. This applies to continuous operation in the
input voltage range Vi min to Vi max; see table 2, Input data. The
case temperature TC (TC Z for option Z) measured at the
measuring point of case temperature (see Mechanical Data)
will approach the indicated value TC max after the warm-up
phase.
natural cooling
0.4
0.2
0
TA
20
40
60
80
100
°C
Fig. 6c
However, the reached temperature TC depends heavily on the
conditions of operation, the distance and temperature of
surrounding components, the orientation of the converter and
the airflow, and the surfaces, thickness, and properties of the
printed circuit board.
Max.allowed output power versus ambient temperature for
converters 110IMY70-12 without opt. Z in vertical position.
Io / Io nom
JM099b
1.0
Caution: The case temperature TC (TC Z for option Z), measured
at the temperature measuring point (see Mechanical Data) may
under no circumstances exceed the specified maximum value.
The installer must ensure that under all operating conditions TC
(TC Z) remain within the limits stated in the table Temperature
specifications.
0.8
0.6
natural cooling
0.4
0.2
0
TA
Io / Io nom
20
40
60
80
100
°C
JM036b
Fig. 6d
1.0
Max. allowed output power versus ambient temperature for
converters 110IMY70-12-0Z in vertical position.
1 m/s
0.5 m/s
natural cooling
=
200 LFM
0.8
0.6
=
100 LFM
Overtemperature Protection
0.4
0.2
0
The converter is protected against possible overheating by
means of an internal temperature monitoring circuit. It shuts
down the converter above the internal temperature limit and
attempts to automatically restart. This feature prevents
excessive internal temperature building up, which could occur
under heavy overload conditions.
TA
20
40
60
80
100
°C
Fig. 6a
Maximum allowed output power versus ambient temperature
for cased models 24IMX70-24-24-0 and 110IMY70-24-24-0
(with rev. AB or greater).
Short Circuit Behavior
The current limiting circuit decreases the output voltage, when
an overcurrent occurs. It protects against a short circuit and
automatically recovers after removal of the overload condition.
If one output of double-output models is overloaded, the
current limiting circuit decreases the output voltage of output 1
and simultaneously of the tracking output 2.
Io / Io nom
JM039b
1.0
Vo
Vo nom
1 m/s
0.5 m/s
natural cooling
=
200 LFM
0.8
0.6
=
100 LFM
0.98
0.4
0.2
0
0.5
TA
20
40
60
80
100
°C
Fig. 6b
JM097
Maximum allowed output power versus ambient temperature
for 24IMX70-24-24-0Z and 110IMY70-24-24-0Z (with rev. AB
or greater).
Io
Io nom
0
Fig. 7
IoL
0.5
1.0
Rectangular current limitation of single-output models
MELCHER
The Power Partners.
BCD.00002 Rev AF, 18-Dec-2013
Page 8 of 15
IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Vo [%]
Cross Regulation of Double-Output Models
overload condition
switch-off
See fig. 9. General conditions:
100
70
– TA = 25°C, unless TC is specified.
– Shutdown and R pin left open-circuit.
05041c
Efficiency
η [%]
t
JM096
100
0
0.3 s
Fig. 8
V = 15 V
i
90
Current limitation of double-output models with both outputs
connected in parallel
V = 24 V
i
80
V = 33.6 V
i
Connection in Series
70
60
The outputs of all models may be connected in series without
any precaution.
0
0.2
0.4
0.6
0.8
Io / Io nom
Connection in Parallel
Fig. 10a
If single-output converters are to be operated in parallel, we
recommend ordering option T.
Efficiency versus input voltage and load. Typical values
(24IMX70-24-24)
Both outputs of a double-output converter can be connected in
parallel without precaution and will share their currents evenly.
η [%]
Note: If output 2 of a double-output converter is not used, connect
JM098
it parallel to output 1.
100
V = 50 V
i
Single-output converters without option T or double-output
converters with the same nominal output voltage should only
be operated in parallel with some precautions. The output
lines to the load should have the same length and section. To
improve the current repartition, small resistors should be
present in the output lines. If ORing diodes are used, double
Schottky diodes should be chosen to keep both diodes at the
same temperature level. If single diodes are chosen, they
should be mounted on the same heat sink. If the total load
exceeds 150% of the nominal load of one converter, start-up
problems are possible.
90
V = 110 V
i
80
V = 137 V
i
70
60
Io / Io nom
0
2
4
6
8
Fig. 10b
Efficiency versus input voltage and load. Typical values
(110IMY70-12)
Note: Instead of connecting two 24 V models in parallel, we
recommend connecting of two 12 V models in series.
η [%]
Vo / Vo nom
JM040a
100
JM030a
1.1
V = 50 V
i
Vo2
90
1.05
V = 110 V
i
1.0
80
Vo1
V = 150 V
i
0.95
70
60
0.9
0.85
0
0.2
0.4
0.6
0.8
Io / Io nom
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 Io / Io nom
Fig. 10c
Fig. 9
Efficiency versus input voltage and load. Typical values
(110IMY70-24-24)
Cross regulation of double-output models (typ.)
Vo2 versus Io2, Io1 = 0.5 Io1 nom
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IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Note: This feature allows connecting the outputs together through
ORing diodes to achieve redundancy. We recommend Schottky
diodes mounted onto the same heat sink (for thermal balancing).
Auxiliary Functions
Adjustable Output Voltage
Sense Lines
As a standard feature, the converters offer adjustable output
voltages by using the control input R. Fig. 10 shows the
schematic diagram of the circuitry. If the control input is left
The sense inputs of single-output models allow for compen-
sating a voltage drop up to 1V (0.6V for models withVonom = 5.1V).
open-circuit, the output voltage is set to Vo nom
.
Synchronization (W)
Note: For output voltages Vo > Vo nom, the minimum input voltage
V
i min (see Electr. Input Data) increases proportionally to Vo /Vo nom.
Double-output models can be synchronized to an external
TTL signal (220 ±10 kHz, duty cycle 10 – 15%). Due to the
higher switching frequency, the efficiency will slightly drop.
06029e
Vi+
Vo+
Rext2
4 kΩ
Vref = 2.5 V
Note: If this feature is not used, W (pin 6) can be connected to Vi–
(pin 2) or left open-circuit.
R
+
+
–
Control
logic
Vext
Rext1
__
Vo–
Vi–
Shutdown (SD)
Fig. 11
The outputs of the converters may be enabled or disabled by
a logic signal (TTL, CMOS, etc.) applied between the
shutdown pin 8 and Vi–. If the shutdown function is not
required, pin 8 should be left open-circuit. Voltage on pin 8:
Output voltage control by means of the R input
The R-input is referenced to the secondary side of the
converter. Adjustment of Vo (or Vo1) is possible by means of
either an external resistor or a voltage source.
Converter operating:
Converter disabled:
2.0 to 20 V
–0.7 to +0.7 V
a) Adjustment by means of an external resistor Rext
Depending upon the value of the required output voltage,
the resistor shall be connected:
.
Progr. Input Voltage Lockout PUL
A special feature of these converters is the adjustable under-
voltage lockout function, protecting the converter (and system)
from high currents caused by operation at too low input volt-
age. This ensures easier start-up in distributed power systems.
either: Between the R-pin and Vo– (or Vo1) to achieve an
output voltage adjustment range of Vo ≈ 80 to 100% of
Vo nom. Single-output models can be trimmed to Vo ≈ 0 V.
Vo
R
ext1 ≈ 4 kΩ • –––––––––
The undervoltage lockout level can be programmed by an
external resistor RPUL (between PUL and Vi–) to increase the
preset levels, as indicated in the table below (with hysteresis).
The overvoltage lockout (OVL) cannot cannot be varied.
V
o nom – Vo
or: Between the R-pin and Vo+ (or Vo1+) to achieve an
output voltage range of Vo ≈ 100 to 105% of Vo nom
.
(Vo – 2.5 V)
2.5 V • (Vo/Vo nom – 1)
R
ext2 ≈ 4 kΩ • ––––––––––––––––––
Table 8: Turn-on and shutdown voltage (pin 1 left open)
Model
Turn-on level
13.5 – 14.5
22 – 23.5
Hysteresis
OVL
Unit
b) Adjustment by means of an external voltage Vext between
Vo– (or Vo1–) and the R-pin.
The control voltage range is 1.96 to 2.62 V and allows for
24IMX70
40IMX70
110IMY70
typ. 2.5
41 – 43
V
adjustment in the range of Vo ≈ 80 to 105% of Vo nom
.
44.5 – 47.5
typ. 6
160 – 175
Single-output models can be trimmed to Vo ≈ 0 V.
Vo • 2.5 V
Vo nom
Table 9: Typical values for RPUL and the respective turn-on
input voltage Vi LO
V
ext ≈ ––––––––
.
Note: Single-output models can be trimmed up to 110% of Vo nom
.
24IMX70
RPUL [kΩ]
40IMX70
Note: Applying a higher external control voltage as needed for the
max. trim range may damage the converter.
Vi LO [V]
Vi LO [V]
RPUL [kΩ]
14
16
18
20
∞
120
62
24
∞
Reference Output (Ref)
The converter provides a stable 5 V (±0.25 V) reference signal
on pin 7 (Ref). The output is protected by a 1 kΩ resistor.
41
Note: It is recommended to connect a filter capacitor (0.1 µF)
110IMY70
single-output double-output
between Ref and Vi–, if Ref is used.
Vi LO [V]
RPUL [kΩ]
R PUL [kΩ]
Current Sharing (T)
46
50
57
61
∞
68
∞
270
110
82
This feature is available for single-output models. Several
parallel connected converters will share their current evenly
by interconnecting the T pins (pin 11).
25.5
18
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IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Electromagnetic Compatibility (EMC)
A suppressor diode together with an input filter form an
effective protection against high input transient voltages which
typically occur in many installations, but especially in battery-
driven mobile applications.
Electromagnetic Immunity
Table 10: Immunity type tests
2
Phenomenon
Standard
Class
Level
Coupling
mode 1
Value
applied
Waveform
Source
imped.
Test
procedure
In
Perf-
oper. crit.
Electrostatic
discharge
to case
IEC/EN
61000-4-2 3
contact discharge ±6000 Vp
(R pin open)
1/50 ns
330 Ω
10 positive and
10 negative
discharges
yes
B
3
air discharge
(R pin open)
±8000 Vp
Electromagnetic
field
IEC/EN
61000-4-3
x 4
antenna
antenna
20 V/m
20 V/m
10 V/m
5 V/m
80% AM, 1 kHz
80% AM, 1 kHz
n.a.
n.a.
80 – 1000 MHz
800 – 1000 MHz
1400 – 2100 MHz
2100 – 2500 MHz
yes
yes
A
A
5
6
Electrical fast
transients/burst
IEC/EN
61000-4-4:
2004
36
4
direct coupl.(fig. 9) ±2000 Vp bursts of 5/50 ns 50 Ω
60 s positive
60 s negative
transients per
coupling mode
yes
yes
A
B
+i/c,
–i/c,+i/–i
5 kHz over 15 ms
burst period: 300
ms
±4000 Vp
capacit. (fig.10),o/c ±2000 Vp
3
yes
yes
B
B
3
Surges
IEC/EN
61000-4-5
37
+i/c, –i/c
±2000 Vp
1.2/50 µs
12 Ω
5 pos. and 5 neg.
surges per
coupling mode
3
2 7
38
+i/–i
±1000 Vp
2 Ω
Conducted
disturbances
IEC/EN
61000-4-6
i, o, signal wires
10 VAC
AM 80%
1 kHz
150 Ω
0.15 – 80 MHz
yes
A
(140 dBµV)
1
i = input, o = output, c = case (not for option Z)
2
3
4
5
6
7
8
A = normal operation, no deviation from specification, B = temporary deviation from specs. possible.
Corresponds to EN 50121-3-2:2006, table 9.3
Corresponds to EN 50121-3-2:2006 table 9.1 and exceeds EN 50121-4:2006 table 1.1.
Corresponds to EN 50121-3-2:2006 table 9.2 and EN 50121-4:2006 table 1.2 (compliance with digital mobile phones).
Corresponds to EN 50121-3-2:2006 table 7.2 and EN 50121-4:2006 table 2.2.
Measured with an external input capacitor specified in table 5
Corresponds to EN 50121-3-2:2006 table 7.1 and EN 50121-4:2006 table 2.2.
Electromagnetic Emissions
The EMC requirements must be observed at the end product
system level. However, Power-One tests the converters to
EMC standards. An effective integrated input filter significantly
reduces the reflected input current and improves EMC
features. Further improvements are possible by adding simple
external filters.
dbµV
80
JM037
EN 55022 A qp
EN 55022 A avr
60
40
20
0
0.2
0.5
1
2
5
10
20 MHz
Fig. 12
Typical disturbance voltage at the input (green = peak, x =
quasi-peak, pink = average) according to EN 55011/22,
measured at Vi nom and Io nom. Output leads = 0.1 m, twisted
(110IMY70-24-24).
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IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Immunity to Environmental Conditions
Table 11: Mechanical and climatic stress
Test method
Standard
Test conditions
Status
Cb
Damp heat
steady state
IEC/EN 60068-2-56
Temperature:
Relative humidity:
Duration:
25°C
95 %
8 h
Converter
operating
Cab
Db
Damp heat
steady state
IEC/EN 60068-2-78
MIL-STD-810D section 507.2
Temperature:
Relative humidity:
Duration:
40±2 °C
Converter
not
operating
93+2/-3
%
56 days
Damp heat test,
cyclic
EN 50155:2007, clause 12.2.5
IEC/EN 60068-2-30
Temperature:
Cycles (respiration effect):
Duration:
55 °C and 25 °C
2
2× 24 h
Converter
not
operating
Bd
Ad
--
Dry heat test
steady state
EN 50155:2007, clause 12.2.4
IEC/EN 60068-2-2
Temperature:
Duration:
70°C
6 h
Converter
operating
Cooling test
steady state
EN 50155:2007, clause 12.2.3
IEC/EN 60068-2-1
Temperature, duration
Performance test
–40 °C, 2 h
+25 °C
Conv. not
operating
Salt mist test
sodium chloride
(NaCl) solution 2
EN 50155:2007
clause 12.2.10
class ST2 2
Temperature:
Duration:
35±2 °C
16 h
Converter
not
operating
Fc
Fh
Vibration
(sinusoidal)
IEC/EN 60068-2-6
MIL-STD-810D section 514.3
Acceleration amplitude:
0.35 mm (10 – 60 Hz)
5 gn = 49 m/s2 (60 - 2000 Hz)
10 – 2000 Hz
Converter
operating
Frequency (1 Oct/min):
Test duration:
7.5 h (2.5 h in each axis)
Random vibration
broad-band
(digital control) and
guidance
IEC/EN 60068-2-64
Acceleration spectral density: 0.05 gn2/Hz
Converter
operating
Frequency band:
Acceleration magnitude:
Test duration:
8 – 500 Hz
4.9 grms
1.5 h (0.5 h in each axis)
Eb
Ea
--
Bump
(half-sinusoidal)
IEC/EN 60068-2-29
MIL-STD-810D section 516.3
Acceleration amplitude:
Bump duration:
Number of bumps:
25 gn = 245 m/s2
6 ms
6000 (1000 in each direction)
Converter
operating
Shock
(half-sinusoidal)
IEC/EN 60068-2-27
MIL-STD-810D section 516.3
Acceleration amplitude:
Bump duration:
Number of bumps:
50 gn = 490 m/s2
11 ms
18 (3 in each direction)
Converter
operating
Shock
EN 50155:2007 clause 12.2.11, Acceleration amplitude:
EN 61373 sect. 10,
class B, body mounted1
5.1 gn
30 ms
18 (3 in each direction)
Converter
operating
Bump duration:
Number of bumps:
--
Simulated long life
testing at
increased random
vibration levels
EN 50155:2007 clause 12.2.11, Acceleration spectral density: 0.02 gn2 / Hz
Converter
operating
EN 61373 sect. 8 and 9,
class B, body mounted1
Frequency band:
Acceleration magnitude:
Test duration:
5 – 150 Hz
0.8 gn rms
15 h (5 h in each axis)
1
Body mounted = chassis of a railway coach
Models with option Z have been covered by lacquer (Peters SL1301) to simulate the end-use situation.
2
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IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Temperatures
Table 12: Temperature specifications, valid for air pressure of 800 to 1200 hPa (800 to 1200 mbar)
Temperature
-0
Unit
Characteristics
Conditions
In operation1
min
–40
–40
–40
–55
max
100 1
105 2
115 2
105
TA
TC
Ambient temperature
Case temperature (without opt. Z) 2
°C
TC Z Component temp. with opt. Z 2
TS
Storage temperature
Not operational
1
2
See Thermal Considerations
Temperature measurment point; see Mechanical Data
Reliability
Table 13: Calculated MTBF at nominal load
Model
Ground benign
Ground fixed
Ground mobile Device hours
50 °C
Unit
40 °C
40 °C
70 °C 1
162 500
163 000
182 000
24IMX70-24-24 (Bellcore Telc. SR-332)
110IMY70-24-24 (BellcoreTelc.SR-332)
110IMY70-12 (BellcoreTelc.SR-332)
1 022 000
1 000 000
825 000
510 000
632 000
413 000
118 500
117 400
106 000
h
1
with an air flow of 0.5 m/s
Mechanical Data
European
Projection
Dimensions in mm.
4 threads M3
JM032a
JM031
TC Z
1
0.8 x 0.8
0.8 x 0.8
1
Bottom
view
Bottom
view
TC
19
19
63.5
72.8
63.5
69.6
76.2
TC
TC Z
Core
Components
Core
Fig. 13
Fig. 14
Case IMX70/IMY70 (without opt. Z)
Material Zinc
IMX70/IMY70 open frame (option Z)
Weight: approx. 70 g
Weight: approx. 140 g
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IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Ensure that a converter failure (e.g. by an internal short-circuit)
does not result in a hazardous condition.
Safety and Installation Instructions
Pin allocation
earthed copper area
JM043
Table 14: Pin allocation
case
Pin no.
Single-output
Double-output
1
2
PUL
Vi–
PUL
Vi–
PCB
screw M3
lock washer
3
n.c. / Vi– 1
Vi+
n.c. / Vi– 1
Vi+
Fig. 16
4
Reliable connection of the metallic case to protection earth
(110IMY70 models). Use at least 2 screws !
5
n.c. / Vi+ 1
W (Sync.)
Ref
n.c. / Vi+ 1
W (Sync.)
Ref
6
Standards and Approvals
7
8
SD / i 2
T
SD / i 2
n.c.
The converters are safety agency approved to the standards
IEC/EN 60950 and UL/CSA 60950-1 2nd Edition.
11
12
13
14
15
16
17
18
19
The converters have been evaluated for:
• Building-in
n.c.
n.c.
S+
Vo2+
• Basic insulation input to output for 24IMX70 and 40IMX70
models, based on the maximum input voltage;
• Reinforced insulation input to output for 110IMY70
models, basic insulation to the case, based on the input
voltage of 150 V. The case can be reliably connected to PE
(protective earth) – except option Z; see fig. 15.
• Pollution degree 2
Vo–
Vo2–
Vo–
Vo1–
Vo+
Vo1+
Vo+
n.c.
S–
n.c.
• Connecting the input to a secondary circuit, which is
subject to a maximum transient rating of 1500 V.
R (adjust)
R (adjust)
1
2
Only connected at 24IMX models, n.c. for 40IMX and 110IMY
i if option i (inhibit) is fitted
The converters are subject to manufacturing surveillance in
accordance with the above mentioned standards.
CB scheme is available.
09122b
Input Fuse
11
1
2
3
4
5
6
7
8
12
13
14
15
16
17
18
19
To prevent excessive current flowing through the input supply
lines in case of a short-circuit in the converter, an external fuse
should be installed in the non-earthed input line; see table 3.
Bottom
view
Railway Applications
To comply with Railway standards, all components are
coated with a protective lacquer (except option Z).
4 treads M3
Protection Degree
Fig. 15
The protection degree is IP 40 (except option Z).
Footprint. The holes in the PCB should have a diameter of
1.5 mm.
Cleaning Liquids
Installation Instructions
In order to avoid possible damage, any penetration of
cleaning fluids should be prevented, since the converters are
not hermetically sealed.
Installation of the converters must strictly follow the national
safety regulations in compliance with the enclosure, mounting,
creapage, clearance, casualty, markings, and segregation
requirements of the end-use application.
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 liquids are
not permitted – except washing at room temperature with
isopropyl alcohol and de-inonized/destilled water (1 : 1).
Connection to the system shall be made via a printed circuit
board with hole diameters of 1.5 mm for the pins. Connect both
input pins for 24IMX70 models.
The mother board can also be cleaned, before fitting the open-
frame converter.
The converters should be connected to a secondary circuit.
Do not open the converter.
MELCHER
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BCD.00002 Rev AF, 18-Dec-2013
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IMX70, IMY70 Series Data Sheet
70 to 90 Watt DC-DC Converters
Note: Other cleaning liquids may damage the adhesive joints of the
ferrite cores.
The electric strength test is performed in the factory as a
routine test in accordance with EN 50116, IEC/EN 60950-1,
and UL/CSA 60950-1, and should not be repeated in the field.
Power-One will not honor any warranty claims resulting from
electric strength field tests.
Isolation
Table 15: Electric strength test voltages
Characteristic
Input to
(outputs+case)
20/40IMX70 1
Input to
(outputs+case)
110IMY701
Outputs to
case
all models 1
Between
outputs
all models
Unit
Factory test >1 s
1.5 2
2.1
3
0.5
0.7
–
0.153
0.213
–
kVAC
kVDC
MΩ
Equivalent DC voltage
4.2
Insulation resistance
at 500 VDC
>100
>100
1
For open-frame models (option Z), only the insulation input to outputs is tested.
1.5 kVAC according to IEC 60950, sect. 6.2, Telecom equipment; type test with 1.5 kVAC / 60 s (IEE 802.3).
The test voltage between outputs is not applied as routine test.
2
3
Options
pin 8. No output voltage overshoot will occur, when the
converter is turned on. If the inhibit function is not required the
inhibit pin 8 should be connected to Vi– to enable the output
(active low logic, fail safe). Voltage on pin 8:
Option i: Inhibit (Negative Shutdown Logic)
The output of the converter may be enabled or disabled by
means of a logic signal (TTL, CMOS, etc.) applied to the inhibit
Converter operating:
Converter disabled:
–10 V to +0.8 V
2.4 V to 20 V
06138a
Option Z
4
8
2
Vi+
If the converters are mounted onto a mother board, in many
cases, a converter case is not required. Only converters with
option Z are not varnished, and this allows dipping of the
populated board including the converter into a protection
lacquer.
i
Vi–
Note: The converters shall not be exposed to cleaning processes,
as this will damage the glue of the ferrite cores.
Fig. 17
If the inhibit function is not used, the inhibit pin should be
connected to Vi–.
NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical
components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written
consent of the respective divisional president of Power-One, Inc.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on
the date manufactured. Specifications are subject to change without notice.
MELCHER
The Power Partners.
BCD.00002 Rev AF, 18-Dec-2013
Page 15 of 15
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