40IMX4-1212-8G_技术文档

IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Features

• RoHS lead-free-solder and lead-solder-exempted

products are available.

• Wide input voltage ranges up to 150 VDC

• 1 or 2 isolated outputs up to 48 V

• 1500 to 3000 VAC I/O voltage withstand test

• Emissions EN 55022 level A

• Immunity to IEC/EN 61000-4-2,-3,-4,-5, and -6

• High efficiency (typ. 86%)

10.5

0.42"

40.6

1.6"

51

2.0"

• Input undervoltage lockout

• Shutdown input, adjustable output voltages

• Flex power: Flexible load distribution on outputs

• Outputs no-load, overload, and short-circuit proof

• Operating ambient temperature –40 to 85 °C

• Thermal protection

• 2" x 1.6" case with 10.5 mm profile

• Supplementary insulation: 20/40IMX15 models

• Double or reinforced insulation: 110IMY15 models

Safety-approved to IEC 60950-1 and UL/CSA 60950-1

2^ndEdition

1

Description

¹110IMY15

models

The IMX15, IMS15, and IMY15 Series of board mountable

15 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

telecommunication, where variable input voltages or high

transient voltages are prevalent.

provide SELV outputs, even if the bus voltage at the converter

input exceeds the SELV-limit of 60 VDC. The 110IMY15

models provide double insulation and are CE marked. They

may be connected to a rectified 110 VAC source without any

further isolation barrier.

Covering a total input voltage range from 8.4 up to 150 V with

different models, the converters are available with single and

electrically-isolated double outputs from 3.3 up to 48 V,

externally adjustable, with flexible load distribution on double-

output models. A shutdown input allows for remote on/off.

The circuitry is comprised of integrated planar magnetics. All

components are automatically assembled and solidly soldered

onto a single PCB without any wire connection. Magnetic

feedback ensures maximum reliability and repeatability in the

control loop over all operating conditions. Careful con-

sideration of possible thermal stress ensures the absence of

hot spots providing long life in environments, where

temperature cycles are frequent. The thermal design allows

operation at full load up to an ambient temperature of 71 °C in

free air without using any potting material. For extremely high

vibration environments the case has holes for screw mounting.

Features include efficient input and output filtering and

consistently high efficiency over the entire input voltage range,

high reliability, and excellent dynamic response to load and

line changes.

The converters have been approved by CSA. 20IMS/20IMX15

and 40IMS/40IMX15 models provide supplementary in-

sulation. Connected to a secondary circuit, these models

Table of Contents

Page

Electromagnetic Compatibility (EMC) .................................14

Immunity to Environmental Conditions...............................16

Mechanical Data ..................................................................17

Safety and Installation Instructions .....................................18

Description of Options ........................................................19

Accessories.........................................................................19

Description ............................................................................ 1

Model Selection ..................................................................... 2

Functional Description .......................................................... 4

Electrical Input Data ..............................................................5

Electrical Output Data ............................................................8

Auxiliary Functions ...............................................................13

MELCHER

The Power Partners.

BCD20008-G Rev AD, 10-Aug-2015

Page 1 of 19

IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Model Selection

Table 1: Model Selection

Output 1

Output 2

Output

power

P_{o nom}[W]

Input voltage

V_{i min}to V_{i max}

[VDC]

Efficiency

Model

Options ²

1

6

V_onom

I_{o nom}

V_onom

I_{o nom}

η_min

η _typ

[VDC]

[A]

[VDC]

[A]

[%]

3.3

4.5

4.0

4.5

-

14.9

13.2

14.9

8.4 to 36 ⁵

16.8 to 75 ³

50 to 150 ⁴

80

78

81

78

82

80

83

79

20IMX15-03-8RG ^SR

40IMX15-03-8R

40IMX15-03-8RG ^SR

110IMY15-03-8RG ^SR

-9, i, Z, -G

i, Z

-9, i, Z, -G

i, Z, -G

5.1

3.5

-

17.5

8.4 to 36 ⁵

16.8 to 75 ³

50 to 150 ⁴

83

85

79.5

86

87

82

20IMX15-05-8RG ^SR

40IMX15-05-8RG ^SR

110IMY15-05-8RG ^SR

i, Z, -G

5.1

2.3

2.7

2.5

2.7

2.5

-

11.7

13.8

12.8

13.8

12.8

8.4 to 36 ⁵

14 to 36

82

81.5

82

84

83

81

20IMX15-05-8R

24IMS15-05-9R

40IMX15-05-8R

48IMS15-05-9R

110IMY15-05-8R

-9, i, Z

i, Z

-9, i, Z

i, Z

16.8 to 75 ³

36 to 75

50 to 150 ⁴

78

i, Z

5.1

1.35

1.6

1.5

1.6

1.5

3.3

1.35

1.6

1.5

1.6

1.5

11.3

13.5

12.6

13.5

12.6

8.4 to 36 ⁵

14 to 36

82

81

82

79

84

83

84

82

20IMX15-0503-8R

24IMS15-0503-9R

40IMX15-0503-8R

48IMS15-0503-9R

110IMY15-0503-8R

-9, i, Z, G

i, Z

-9, i, Z, G

i, Z

16.8 to 75 ³

36 to 75

50 to 150 ⁴

i, Z, G

5

1.3

1.4

5

1.3

1.4

13.0

14.0

8.4 to 36 ⁵

14 to 36

82

81

80

85

84

83

82

20IMX15-05-05-8

24IMS15-05-05-9

40IMX15-05-05-8

48IMS15-05-05-9

110IMY15-05-05-8

-9, i, R, Z, G

i, Z

-9, i, R, Z, G

i, Z

16.8 to 75 ³

36 to 75

50 to 150 ⁴

i, Z, G

12

0.65

0.7

12

0.65

0.7

15.6

16.8

8.4 to 36 ⁵

14 to 36

83

84

82

86

87

86

85

20IMX15-12-12-8

24IMS15-12-12-9

40IMX15-12-12-8

48IMS15-12-12-9

110IMY15-12-12-8

-9, i, Z, G

i, Z

-9, i, R, Z, G

i, Z

16.8 to 75 ³

36 to 75

50 to 150 ⁴

i, Z, G

15

0.5

15

0.5

15.0

16.8

8.4 to 36 ⁵

14 to 36

85

83

84

82

88

86

85

20IMX15-15-15-8

24IMS15-15-15-9

40IMX15-15-15-8

48IMS15-15-15-9

110IMY15-15-15-8

-9, i, R, Z, G

i, Z

-9, i, R, Z, G

i, Z

0.56

16.8 to 75 ³

36 to 75

50 to 150 ⁴

i, Z, G

24

0.32

0.35

24

0.32

0.35

15.4

16.8

8.4 to 36 ⁵

14 to 36

83

84

83

82

86

87

86

85

20IMX15-24-24-8

24IMS15-24-24-9

40IMX15-24-24-8

48IMS15-24-24-9

110IMY15-24-24-8

-9, i, R, Z, G

i, Z

-9, i, R, Z, G

i, Z

16.8 to 75 ³

36 to 75

50 to 150 ⁴

i, Z, G

1

Flexible load distribution on dual and double outputs possible; up to 75% of the total output power P_{o nom}on one of the 2 outputs.

IMX/IMY15-0503 models have reduced load distribution flexibility; 1.8 A max. on one of the 2 outputs. The other output should not

exceed the difference to the total output power P_{o nom}

See Description of Options.

Short-time operation down to V_i= 14.4 V possible (P_oreduced to approx. 85% of P_{o nom}

Short-time operation down to V_i= 43.2 V possible (P_oreduced to approx. 85% of P_{o nom}) and up to 154 V

Initial start-up at 9 V, main output voltage regulation down to 8.4 V

.

2

3

)

4

5

6

Efficiency at T_A= 25 °C, V_{i nom,}I_{o nom}

.

SR

Models with synchronos rectifier. For the RoHS version of such models, add -G !

Preferred for new designs

NFND Not for new designs.

Replace 24IMS15 models by 20IMX15 and 48IMS15 by 40IMX15;

Replace 20IMX15-05, 40IMX15-05, and 110IMY15-05 by models with synchronos rectifier^SR

For new designs, chose always the RoHS version !

;

MELCHER

The Power Partners.

BCD20008-G Rev AD, 10-Aug-2015

Page 2 of 19

IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

RoHS-Compliant Models

The type designation of RoHS-compliant models (compliant for the restriction of all six substances) for the IMX/IMY15 Series

ends with "G".

However, in single-output models with 3.3 V or 5.1 V output an extra hyphen (-) is added after the existing "G", which already

signifies a synchronos rectifier^SR. This is an exception to our normal nomenclature to identify this type of product, since G is

already used to designate products for higher output current fitted with a synchronous rectifier. Some examples

– 20IMX15-05-8R-G means a standard version with RoHS compliance for all six substances.

– 20IMX15-05-8RG means a synchronos rectifier^SRversion which is not RoHS-compliant.

– 20IMX15-05-8RG-G means a synchronos rectifier^SRversion and with RoHS compliance for all six substances.

– 20IMX15-05-05-8RG means a double-output model with RoHS compliance for all six substances

– 110IMY15-24-24-8RG means a double-output model with RoHS compliance for all six substances.

Part Number Description

40 IMX15 -05 - 05 -8 R G i Z -G

xxix

Input voltage range V_i

8.4 to 36 V ......................................................20

14 to 36 V .......................................................24

16.8 to 75 V ....................................................40

36 to 75 V .......................................................48

50 to 150 V ................................................... 110

Series

IMX15, IMS15, IMY15

Output voltage of output 1 ............................03, 05, 12, 15, 24

Hyphen designating double-output models with two

electrically isolated outputs ..............................-

1

Output voltage of output 2 ............................03, 05, 12, 15, 24

Operating ambient temperature range T_A

6

2

–40⁶to 85 °C ................................................. -8

–40 to 71°C ................................................... -9

Options and features:

3

4

5

R input and magnetic feedback...................... R

Synchronous rectification ............................... G

Inhibit................................................................. i

Open frame ......................................................Z

RoHS-compliant for all 6 substances ..... G or -G

1

Not applicable to -0503 models. They have a common ground.

IMS15 models are not recommended for new designs.

Standard for single-output and -0503- models, options for other models (but not for new designs)

Option i replaces the standard shutdown function; see Description of Options.

RoHS models with synchronos rectifier end as an exception with -G.

Only –25 °C for older -8RG^SRmodels (Rev. <BA); see table 7a.

2

3

4

5

6

Note: The sequence of options must follow the order above !

Examples: 20IMX15-05-05-8: DC-DC converter, input voltage 9 to 36 V, 2 galvanically isolated outputs each providing

5 V, 1.3 A.

110IMY15-0503-8R: DC-DC converter, input voltage 50 to 150 V, 2 outputs with common return providing +5.1 V,

1.5 A and +3.3 V, 1.5 A. Converter fitted with magnetic feedback for tight output voltage regulation.

Product Marking

The converters without option Z are marked with basic type designation, input and output voltages and currents, applicable

safety approval and recognition marks, patent nos., company logo, date code, and serial number.

MELCHER

The Power Partners.

BCD20008-G Rev AD, 10-Aug-2015

Page 3 of 19

IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

03089a

Functional Description

Vi+

1

13

Vo1+

The IMX15/IMS15/IMY15 Series of DC-DC converters are

magnetic feedback-controlled flyback converters using

current mode PWM (Pulse Width Modulation). The -05- and

-0503-output voltage models, as well as all double-output

models fitted with option R, exhibit an active magnetic

feedback loop via a pulse transformer, resulting in very tight

regulation of the output voltage (see the block diagrams). The

output voltages of these models can be adjusted via the

R-input. The R-input is referenced to the secondary side and

allows for programming the output voltages in the range of

approximately 80 to 105% of V_{o nom}, using either an external

resistor or an external voltage source.

4

3

SD

15

11

Go

PWM

Vo2+

n.c.

Vi–

2

12

17

Go

2 x 2200 pF

Several single-output models with 3.3 or 5.1 V output exhibit a

synchronos rectifier to improve the efficiency.

R

The voltage regulation on the double-output models without

option R is achieved with a passive transformer feedback

from the main transformer (see fig. 3). The output voltages can

be adjusted via the Trim input. The Trim input is referenced to

the primary side and allows for programming the output

voltage in the range 100 to 105% of V_{o nom}via an external

resistor or within 75 to 105% using an external voltage source.

The load regulation output characteristic allows for paralleling

of one or more double-output models with equal output

voltage.

Fig. 2

Block diagram of -0503-models

03090a

Vi+

1

11

Vo1+

Current limitation is provided by the primary circuit, thus

limiting the total output power of double-output models. The

shutdown input allows remote converter on/off.

4

3

SD

12

13

Vo1–

Vo2+

PWM

Trim

Overtemperature protection will disable the converter under

excessive overload conditions with automatic restart.

Vi–

2

15

17

Vo2–

n.c.

03039

2 x 2200 pF

1

4

13

15

Vi+

SD

Vo+

Vo–

Fig. 3

Block diagram of double-output models

PWM

2 x 2200 pF

1500 V

2

Vi–

R

17

Fig. 1

Block diagram of single-output models

MELCHER

The Power Partners.

BCD20008-G Rev AD, 10-Aug-2015

Page 4 of 19

IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Electrical Input Data

General conditions:

– T_A= 25 °C, unless T_Cis specified.

– Shut-down pin left open-circuit.

– Trim or R input left open-circuit.

Table 2a: Input data of IMX15 and IMY15 models

Input

20IMX

40IMX

110IMY

Unit

Characteristics

Conditions

min

typ max min

typ max min typ max

V_i

Input voltage range¹

T_{A min}– T_{A max}

I_o= 0 – I_{o nom}

9 ^{5, 7}

36 16.8^{5, 6}

75 50 ⁵

150 ⁸

V

V_{i nom}

V_{i sur}

t_startup

Nominal input voltage

20

40

110

0.5

Repetitive surge voltage

Abs. max input (3 s)

40

100

0.5

0.1

168

0.8

0.1

Converter

start-up time ²

Switch on

SD high

Worst case condition at

V_{i min}, I_o= I_{o nom}

0.25 0.5

0.25

s

0.1

t_rise

Rise time²

V_{i nom}, resistive load

I_{o nom}, capac. load

I_o= 0, V_{i min}– V_{i max}

I_o= 0 – I_{o nom}

5

ms

10

20

65

30

8

10

20

45

30

9

10

20

15

20

10

I_{i o}

No-load input current

Reflected ripple current

Inrush peak current ³

Input capacitance

mA

mA_pp

A

I_irr

I_{inr p}

C_i

V_i= V_{i nom}

for surge calculation

Converter disabled

Converter operating

1.5

0.75

0.35

µF

––

V_SD

Shut-down voltage

–10 to 0.7

open or 2 – 20

approx. 10

1

V

open or 2 – 20

approx. 10

open or 2 – 20

approx. 10

––

R_SD

Shut-down input resistance

kΩ

––

I_SD

Input current, when

disabled

V_{i min}– V_{i max}

SD connected to Vi–

10

3

mA

f_s

Switching frequency

V_{i min}– V_{i max}

I_o= 0 – I_{o nom}

,

approx. 300

A

approx. 300

A

approx. 300

A

kHz

V_{i RFI}

Input RFI level conducted

EN 55022⁴

1

If V_ois set above V_{o nom}by use of the R or Trim input, V_{i min}will be proportionately increased.

Measured with resistive and max. admissible capacitive load. Valid for models with rev. AI or greater.

Source impedance according to ETS 300132-2, version 4.3.

Measured with a ceramic capacitor C_idirectly across input; output lead length 0.1 m, leads twisted. Double-output models with both

outputs in parallel. C_iis specified in table 11.

2

3

4

5

6

7

8

Input undervoltage lockout at typ. 80% of V_{i min}

.

Short time operation down to V_{i min}>14.4 V possible. P_oreduced to approx. 85% of P_{o nom}

Initial start-up at V_i= 9 V, main output voltage regulation down to 8.4 V

Short time operation up to 154 V possible for 2 s.

.

MELCHER

The Power Partners.

BCD20008-G Rev AD, 10-Aug-2015

Page 5 of 19

IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Table 2b: Input Data of IMS15 models; general conditions as in table 2a

Input

24IMS

typ

48IMS

typ

Unit

Characteristics

Conditions

min

max

min

max

V_i

Input voltage range¹

T_{A min}– T_{A max}

I_o= 0 – I_{o nom}

14

36

75

V

V_{i nom}

V_{i sur}

t_startup

Nominal input voltage

24

48

Repetitive surge voltage

Abs. max input (3 s)

50

0.5

0.1

100

0.5

0.1

Converter

start-up time ²

Switch on

SD high

Worst case condition at

V_{i min}, I_o= I_{o nom}

0.25

s

t_rise

Rise time²

V_{i nom}, resistive load

_{o nom}, capac. load

5

ms

I

10

20

30

20

40

10

30

20

I_{i o}

I_irr

No-load input current

Reflected ripple current

Inrush peak current ³

Input capacitance

I_o= 0, V_{i min}– V_{i max}

I_o= 0 – I_{o nom}

mA

mA_pp

A

I_{inr p}

V_i= V_{i nom}

5

3

4.5

C_i

for surge calculation

Converter disabled

Converter operating

4

2

µF

––

V_SD

Shut-down voltage

–10 to 0.7

open or 2 – 20

approx. 10

1.2

–10 to 0.7

open or 2 – 20

approx. 10

1.2

V

––

R_SD

Shut-down input resistance

kΩ

––

I_SD

Input current, when

disabled

V_{i min}– V_{i max}

SD connected to Vi–

3

mA

f_s

Switching frequency

V_{i min}– V_{i max}

I_o= 0 – I_{o nom}

,

approx. 300

A

approx. 300

A

kHz

V_{i RFI}

Input RFI level conducted

EN 55022⁴

1

If V_ois set above V_{o nom}by use of the R or Trim input, V_{i min}will be proportionately increased.

Measured with resistive and max. admissible capacitive load.

Source impedance according to ETS 300132-2, version 4.3.

Measured with a ceramic capacitor C_idirectly across input; output lead length 0.1 m, leads twisted. Double-output models with both

outputs in parallel. C_iis specified in table 11.

2

3

4

5

Input undervoltage lockout at typ. 80% of V_{i min}

.

MELCHER

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BCD20008-G Rev AD, 10-Aug-2015

Page 6 of 19

IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Inrush Current

Table 4: Recommended external fuses

The inrush current has been made as low as possible by

choosing a very small input capacitance. A series resistor may

be installed in the input line to further reduce this current.

Model

Fuse type

F 4.0 A

20IMX15

24IMS15

F 3.15 A

F 2.0 A

40IMX15, 48IMS15

110IMY15

A

04022b

F 1.0 A

4

3

2

Input Transient Voltage Protection

A built-in suppressor diode provides effective protection

against input transients, which typically occur in many

installations.

1

t

100 µs

0

20

60

80

40

Table 5: Built-in transient voltage suppressor

Type

Breakdown

voltage

Peak power

at 1 ms

Peak pulse

current

Fig. 4

V_{Br nom}[V]

P_p[W]

I_pp[A]

Typical inrush current at V_{i nom}, P_{o nom}versus time

(40IMX15). Source impedance according to

20IMX15

24IMS15

40IMX15

48IMS15

110IMY15

40

1500

600

22

7.7

9.7

4.1

0.5

53

ETS 300132-2 at V_{i nom}

.

100

1500

600

100

V_o

t_rise

04008b

V_{o nom}

168

600

For very high energy transients as for example to achieve

compliance to IEC/EN 61000-4-5 or ETR 283 (see table

Electromagnetic Immunity), an external inductor and a

capacitor are required, see Fig. 6. The components should

have similar characteristics as listed in table 6.

t

t_startup

Fig. 5

Converter start-up and rise time

04036a

L

Vi+

Input Undervoltage Lockout

+

A special feature of these converters is the accurate

undervoltage lockout protection, which protects against large

currents caused by operation at low voltages. This ensures

easier start-up in distributed power systems.

C

D

Vi–

Tab. 3: Turn on and turn off voltage

Fig. 6

Example for external circuitry to achieve better transient

immunity. The diode D is only necessary for 20IMX15

models.

Model

Turn on

min

Turn off

min

Unit

max

8

max

7.5

13

20IMX15

24IMS15

40IMX15

48IMS15

110IMY15

7.5

12.5

31.5

40

7

V

13.5

32.5

42.5

12

31

38

Table 6:

Components for external circuitry for IEC/EN 61000-4-5,

level 3, or ETR 283 (19Pfl1) compliance.

13

32

Model

Inductor (L)

68 µH, 2.7 A

150 µH, 1.3 A

220 µH, 1.3 A

150 µH, 1 A

Capacitor (C)

330 µF, 63 V

Diode (D)

40.5

20IMX15

24IMS15

40IMX15

48IMS15

110IMY15

1.5 k E47A

150 µF, 63 V

-

Fuse and Reverse Polarity Protection

2 x 100 µF, 100 V

100 µF, 100 V

2 x 100 µF, 200 V

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.

330 µH, 0.4 A

MELCHER

The Power Partners.

BCD20008-G Rev AD, 10-Aug-2015

Page 7 of 19

IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Electrical Output Data

We recommend connecting an external 1 µF ceramic capacitor across the output pins.

General conditions:

– T_A= 25°C, unless T_Cis specified

– Shutdown pin and Trim or R pin left open-circuit (not connected)

Table 7a: Output data for single-output models -03-8RG ¹and 05-8RG ¹

Output

3.3 V

typ

5.1 V

typ

Unit

Characteristics

Conditions

min

max

min

max

V_o

Output voltage

V_{i nom}

I_o= 0.5 I_{o nom}

3.25

3.35

5.05

5.15

V

A

I_{o nom}

Output current

20IMX V_{i min}to V_{i max}

4.5

6.0

3.5

4.6

40IMX/110IMY

I_{o L}

∆V_o

V_o

Current limit²

V_{i nom}, T_C= 25 °C

V_o≤ 93% V_{o nom}

Line/load regulation

Output voltage noise

V_{i min}to V_{i max}

(0.1 to 1) I_{o nom}

,

±0.5

%

4

5

V_{i min}to V_{i max}

I_o= I_{o nom}

100

60

100

60

mV_pp

V_{o L}

C_{o ext}

V_{o d}

t_{o d}

Output overvoltagelimit. ³

Admissible capacitive load

115

0

130

4000

115

0

130

4000

%

µF

mV

ms

Dynamic

load

Voltage deviat. V_{i nom}

±250

1

I

_{o nom}↔ /

2

I_{o nom}

Recovery time

1

regulation

IEC/EN 61204

α_Vo

Temperature coefficient

V_{i min}to V_{i max}

±0.02

%/K

∆V_o/∆T_C

(0.1 to 1) I_{o nom}

1

^SRModels -8RG (synchr. rectifier) have a minimum case and operating temperature of –25 °C. If the revision is BA (or later), it is –40°C.

The current limit is primary side controlled. In the event of a sustained overload condition the thermal protection may cause the

converter to shut down (restart after cooling down).

The overvoltage protection is via a primary side second regulation loop. It is not tracking with R control.

BW = 20 MHz

2

3

4

5

Measured with a probe according to EN 61204

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IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Table 7b: Output data for -05-8R and -0503-8R models; general conditions as in table 7a

Output

5.1 V

typ

5.1/3.3 V

typ

Unit

Characteristics

Conditions

min

max

min

max

V_o,V_o1Output voltage

V_o2

V_{i nom}

I_o= 0.5 I_{o nom}

5.05

5.15

5.0

3.13

5.12

3.46

V

A

I_{o nom}Output current ¹

20IMX V_{i min}– V_{i max}

2.3

2.7

2.5

2 × 1.35

2 × 1.6

2 × 1.5

1.6 ⁴

2.0 ⁴

1.8 ⁴

24IMS/48IMS

40IMX/110IMY

I_oL,I_o1LCurrent limit²20IMX

V_{i nom}

3.2

2.7

I_o2L

V_o1≤ 93% V_{o nom}

3.8

I_oL,I_o1L

I_o2L

24IMS/48IMS

3.5

3.6

3.0

3.8

I_oL/I_o1L

I_o2L

40IMX/110IMY

2.9

4.0

∆V_o

Line/load regulation

5.1 V V_{i min}– V_{i max}

,

±0.5

–

%

(0.1 – 1) I_{o nom}

5.1 V

3.3 V

+3, –5

±4.5

80

–

5

6

V_o1/2

Output voltage noise

V_{i min}– V_{i max}

I_o= I_{o nom}

70

mV_pp

40

V_{o L}

Output overvoltagelimit ⁷

115

0

130

4000

±250

1

115

0

130

4000 ³

±150

1

%

µF

C_{o ext}Admissible capacitive load

V_{o d}

t_{o d}

Dynamic

load

Voltage deviat. V_{i nom}

I_{o nom}↔ ¹/

mV

ms

2

I_{o nom}

Recovery time

regulation

IEC/EN 61204

α_Vo

Temperature coefficient

V_{i min}– V_{i max}

±0.02

%/K

∆V_o/∆T_C

(0.1 – 1) I_{o nom}

1

Flexible load distribution: I_omax for one of the 2 outputs; however the total load should not exceed P_{o nom}specified in the table Model

Selection.

2

3

4

5

6

7

The current limit is primary-side controlled.

For -0503-models: total capacitive load of both outputs.

For -0503-models: Conditions for specified output. Other output loaded with constant current I_o= 0.5 I_{o nom}

BW = 20 MHz

Measured with a probe according to EN 61204

The overvoltage protection is via a primary side second regulation loop. It is not tracking with R control.

.

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IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

able 7c: Output data for double-output models; general conditions as in table 7a

Output

2 × 5 V

2 × 12 V

2 × 15 V

2 × 24 V

Unit

Characteristics

Conditions

24IMS/48IMS V_{i nom}

min typ max min typ max min typ max min typ max

V_o1

V_o2

I_{o nom}

I_oL

Output 1

4.95

4.94

5.05 11.88

5.05 11.90

5.06 11.84

5.06 11.88

12.12 14.85

12.10 14.88

12.16 14.80

12.12 14.85

15.15 23.70

15.12 23.80

15.20 23.64

15.15 23.75

24.30

24.20

24.36

24.25

V

I_o= 0.5 I_{o nom}

other models

24IMS/48IMS

other models

Output 2

Output current ¹

Current limit^{2, 4}

20IMX V_{i min}– V_{i max}

other models

20IMX V_{i nom}

2 × 1.3

2 × 1.4

3.0

2 × 0.65

2 × 0.50

2 × 0.32

A

2 × 0.70

1.6

2 × 0.56

1.3

2 × 0.35

0.85

0.95

0.90

±1

V_o1≤ 93% V_{o nom}

24IMS/48IMS

3.5

1.9

1.6

40IMX/110IMY

3.2

1.7

1.4

∆V_o1

∆V_o2

V_o1/2

Line/load regulation output 1 V_{i min}– V_{i max}, I_{o nom}

±1

%

output 2 V_{i nom}, (0.1 – 1) I_{o nom}

±3

5

Output voltage noise

V_{i min}– V_{i max}

I_o= I_{o nom}

80

120

150

70

240 mV_pp

120

6

40

60

V_{o L}

C_{o ext}

V_{o d}

t_{o d}

Output overvoltage limit⁷

Admissible capacitive load ³

Min. load 1%

115

0

130 115

130

180

%

4000

1

0

680

1

0

470

0

µF

mV

ms

Dynamic

load

regulation

Voltage deviat. V_{i nom}

I_{o nom}↔ ¹/

±250

±300

±600

2

I_{o nom}

Recovery time

1

α_Vo

Temperature coefficient

V_{i min}– V_{i max}

±0.02

±0.02 %/K

∆V_o/∆T_C

(0.1 – 1) I_{o nom}

1

Flexible load distribution: Each output of double-output models is capable of delivering 75% of the total output power; however the

total load should not exceed P_{o nom}specified in the table Model Selection.

The current limit is primary-side controlled.

2

3

4

5

6

7

Measured with both outputs connected in parallel.

Conditions for specified output. Other output loaded with constant current I_o= 0.5 I_{o nom}

BW = 20 MHz

.

Measured with a probe according to EN 61204

The overvoltage protection is via a primary side second regulation loop, not tracking with Trim or R control.

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IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Thermal Considerations

Short Circuit Behaviour

If a converter, mounted on a PCB, is located in free, quasi-

stationary air (convection cooling) at the indicated maximum

ambient temperature T_{A max}(see table Temperature

specifications) and is operated at its nominal input voltage and

output power, the case temperature measured at the

measuring point of case temperature T_C(see Mechanical

Data) will approach the indicated value T_{C max}after the warm-

up phase. However, the relationship between T_Aand T_C

depends heavily on the conditions of operation and integration

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. T_{A max}is therefore only an indicative value.

The current limit characteristic shuts down the converter,

whenever a short circuit is applied to its output. It acts self-

protecting, and automatically recovers after removal of the

overload condition (hiccup mode).

Parallel and Series Connection

The outputs of one or several single- or double-output models

V_o[%]

overload condition

100

switch-off

05041c

70

Caution: The case temperature T_Cmeasured at the measuring

point of case temperature T_C(see Mechanical Data) may under no

circumstances exceed the specified maximum value. The installer

must ensure that under all operating conditions T_Cremains within

the limits stated in the table Temperature specifications.

t

0

0.3 s

Fig. 8

P_o/P_{o max}

Overload switch-off (hiccup mode); typical values

JM017

1.0

0.8

can be connected in series without any precautions, taking

into consideration that the highest output voltage should

remain below 42 V to ensure that the output remains SELV.

0.5 m/s

= 100 LFM

0.6

Both outputs of the same converter with equal voltage (e.g. 5 V

/ 5 V) can be connected in parallel and will share their output

currents equally. Parallel operation of single or double outputs

of two or more converters with the same output voltage may

cause start-up problems at initial start-up. This is only

advisable in applications, where one converter is able to

deliver the full load current as, for example, required in true

redundant systems.

natural cooling

0.4

0.2

0

T_A

20

40

60

80

100

°C

Fig. 7

Maximum output power versus ambient temperature

Note: If the 2^ndoutput of double-output models (except 0503) is not

used, connect it in parallel to the 1^stoutput.

Overtemperature Protection

The converters are protected from 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 in short intervals. This feature

helps protect against excessive internal temperatures, which

could occur during heavy overload conditions.

Typical Performance Curves

General conditions:

º

– T_A= 25 C, unless T_Cis specified.

– Shutdown pin left open-circuit.

– Trim or R input not connected.

V

Output Overvoltage Protection

05166a

5.5

The output of single-output models as well as -0503- and -05-

05-models are protected against overvoltage by a second

control loop. In the event of an overvoltage on one of the

outputs, the converter will shut down and attempt to restart in

short intervals.

5.0

4.5

4.0

3.5

3.0

Doublel-output models (except -0503- and -05-05-models) are

protected against overvoltage by a Zener diode across the

second output. Under worst case conditions the Zener diode

will become a short circuit. Since with double-output models

both outputs track each other, the protection diode is only

provided in one of the outputs. The main purpose of this

feature is to protect against possible overvoltage, which could

occur due to a failure in the control logic. This protection circuit

is not designed to withstand externally applied overvoltages.

0

0.4

1.2 1.6 2.0 2.4 2.8 3.2 3.6 4 A

0.8

Fig. 9

V_oversus I_o(typ) of converters with V_o= 5.1 V

(110IMY15-05-8R)

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IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

%

V

05168a

05020a

90

13

V_{i min}

12

11

10

9

80

V_{i nom}

V_{i max}

70

8

60

7

I_o

0.25

0.5

0.75

1 P_o/P_{o nom}

0

0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 A

Fig. 12b

Fig. 10

Efficiency versus input voltage and load. Typical values

(110IMY15-12-12-8)

V_oversus I_o(typ.) of double-output models (2 x 12 V), with

both outputs in parallel (110IMY15-12-12-8)

%

V

05021a

05040a

13.5

90

V_{i nom}

V_{i max}

V_{i min}

13

80

I_o2= 0.035 A

12.5

70

12

I_o2= 0.35 A

60

50

11.5

11

I_o1

0.5

0.6 0.7 A

0.1

0.2

0.3

0.4

1

I_o1/I_{o1 nom}

0.5

0.25

0.75

Fig. 11

Cross load regulation V_o1versus I_o1(typ.) for various I_o2

(2 x 12 V).

Fig. 12c

Efficiency versus input voltage and load. Typical values

(48IMS15-12-12-9)

%

V

05167a

05039-X15b

90

V_{i min}

V_{i nom}

14

13

80

V_{i max}

12

11

10

V_o2

V_o1

70

60

I_o1/I_{o1 nom}

0.5

0.75

1

1.25

1.5

0

0.25

1 P_o/P_{o nom}

0.25

0.5

0.75

Fig. 13

Fig. 12a

Flexible load distribution on double-outputs models with

option R (110IMY15-12-12-8R):

Load variation from 0 to 150% of I_{o1 nom}on output 1;

Efficiency versus input voltage and load. Typical values

(40IMX15-12-12-8).

output 2 loaded with 50% of I_{o2 nom}

.

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IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

a) Adjustment by means of an external resistor R_ext

.

Auxiliary Functions

Depending upon the value of the required output voltage,

the resistor shall be connected:

Shutdown Function

The outputs of the converters may be enabled or disabled by

means of a logic signal (TTL, CMOS, etc.) applied to the shut-

down pin. If this function is not required, the shut-down pin

should be left open-circuit.

either: Between the R pin and Vo– to achieve an output

voltage adjustment range of V_o≈ 80 to 100% of V_{o nom}

.

V_o

R

_ext1≈ 4 kΩ • –––––––––

V

_{o nom}– V_o

or: Between the R pin and Vo+ to achieve an output voltage

range of V_o≈ 100 to 105% of V_{o nom}

• Converter operating:

• Converter disabled:

2.0 to 20 V

.

–10 to +0.7 V

(V_o– 2.5V)

_ext2≈ 4 kΩ • ––––––––––––––––––

2.5 V • (V_o/V_{o nom}– 1)

Adjustable Output Voltage

R

• R input for single-output models and -0503-models

• Trim input for double-output models

b) Adjustment by means of an external voltage V_ext

between Vo– and R pin.

• R input as option R for most double-output models.

The control voltage range is 1.96 to 2.62 V and allows for

adjustment in the range of V_o≈ 80 to 105% of V_{o nom}

As a standard feature, the single- and double-output models

offer adjustable output voltage(s) by using the control input R

or Trim. If the control input is left open-circuit, the output

voltage is set to V_{o nom}. For output voltages V_o> V_{o nom}, the

.

V_o• 2.5 V

V_{o nom}

V

_ext≈ ––––––––

minimum input voltage V_i

increases proportionally to V_o/V_{o nom}

(see Electrical Input Data)

min

Attempting to adjust the output below this range will cause

the converter to shut down (hiccup mode).

.

Single-output models with synchronous rectifier (G):

Note: Applying an external control voltage >2.75 V may damage

the converter.

The R input is referenced to the secondary side of the

converter. Adjustment of the output voltage is possible by

means of an external resistor connected between the R pin

and either Vo+ or Vo–.

06029e

Vi+

Vo+

Note: For models with synchronous rectifier the logic for V_o

adjustment differs from other models with R input.

R_ext2

4 kΩ

V_ref= 2.5 V

R

06131

+

–

Vo+

Vi+

Control

logic

V_ext

R_ext1

Vo–

Vi–

R

R_ext2

Vi–

Fig. 15

Output voltage control for single-output models, -0503-

models, and double-output models fitted with option R by

means of the R input.

Vo–

Fig. 14

Output voltage control for single-output models with

synchronous rectifier.

Double-output models with Trim input:

The Trim input is referenced to the primary side. The figure

below shows the topology. Adjustment is possible trough either

Table 8: V_oversus V_extapproximate values

an external resistor or an external voltage source V_ext

.

V_onom

Typ. values of R_ext1

Typ. values of R_ext2

[V]

V_o[% of V_{o nom}

]

R_ext1[kΩ] V_o[% of V_{o nom}R_ext2[kΩ]

]

06089a

3.3

90

95

100

0.47

2.7

∞

100

105

110

∞

15

6.8

Vi+

Vo1+

Vo1–

Vo2+

Trim

+

5.1

90

95

100

3.3

8.2

∞

100

105

110

∞

9.1

3.9

Control

circuit

V_ref2.5 V

V_ext

R_ext

Vi–

–

Vo2–

All other models fitted with R-input:

The R input is referenced to the secondary side of the

converter. Adjustment of the output voltage is possible by

means of either an external resistor or a voltage source.

Fig. 16

Output voltage control for double-output models (without

option R) by means of the Trim input.

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IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

b) Adjustment by an external voltage source V_ext

:

a) Adjustment by means of an external resistor R_ext

:

For programming the output voltage in the range 75 to

105% of V_{o nom}, a source V_ext(0 to 20 V) is required,

connected between the Trim pin and Vi–. The table below

indicates values V_oversus V_ext(nominal conditions V_{i nom}, I_o

= 0.5 I_{o nom}), with either parallel-connected outputs or equal

load conditions on both outputs. Applying a control voltage

>20 V will set the converter into a hiccup mode. Direct

paralleling of the Trim pins of parallel connected converters

is possible.

Programming of the output voltage by means of an external

resistor R_extis possible within 100 to 105% of V_{o nom}. R_ext

should be connected between the Trim pin and Vi–.

Connection of R_extto Vi+ may damage the converter. The

table below indicates suitable resistor values for typical

output voltages under nominal conditions (V_{i nom}, I_o= 0.5

I_{o nom}) with either parallel-connected outputs or equal-load

conditions on both outputs.

Table 9a: R_extfor V_o> V_{o nom}

;

approximate values (V_{i nom}, I_{o1, 2}= 0.5 I_{o1/2 nom}

)

Table 9b: V_oversus V_extfor V_o= 75 to 105% V_{o nom}

typical values (V_{i nom}, I_o1/2= 0.5 I_{o1/2 nom}

;

V_o[%V_{o nom}

]

R_ext[kΩ]

)

105 to 108 (107 typically)

0

V_o[%V_{o nom}

]

V_ext[V]

105

104

103

102

101

100

1.5

5.6

12

27

68

∞

≥105

102

95

85

75

0

1.6

4.5

9

13

Electromagnetic Compatibility (EMC)

A suppressor diode together with an input filter forms 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

Phenomenon

Standard

Class

Level

Coupling

mode

Value

applied

Waveform

Source

Imped.

Test

procedure

In

Perf.

2

oper. crit. ³

Electrostatic

discharge

to case

IEC/EN

61000-4-2

2

contact discharge

(R pin open)

4000 V_p

1/50 ns

330 Ω

10 positive and

10 negative

discharges

yes

B

3

air discharge

(R pin open)

8000 V_p

Electromagnetic

field

IEC/EN

61000-4-3

x ⁵

3⁶

antenna

20 V/m ⁵

3 V/m ⁶

AM 80%

1 kHz

n.a.

80 to 1000 MHz

900 MHz

yes

A

ENV 50204

3

antenna

10 V/m

PM, 50% duty

cycle, 200 Hz

repetition frequ.

4

Electrical fast

transients/burst 61000-4-4

IEC/EN

3⁴

direct +i/–i

2000 V_pbursts of 5/50 ns 50 Ω

5 kHz rep. rate

60 s positive

60 s negative

transients per

coupling mode

yes

A

transients with

15 ms burst

duration and a

300 ms period

Surges

IEC/EN

61000-4-5

2

+i/–i

1000 V_p

2000 V_p

1.2/50 µs

2 Ω

5 pos. and 5 neg.

surges

yes

B

A

1

3 ¹

RF conducted

immunity

IEC/EN

61000-4-6

3

2⁶

10 VAC

3 VAC ⁶

AM modulated

80%, 1 kHz

150 Ω

0.15 to 80 MHz

1

External components required; see Fig. 6 and table 6.

i = input, o = output.

A = normal operation, no deviation from specs., B = temporary deviation from specs. possible.

Corresponds to the railway standard EN 50121-3-2:2006, table 9.3.

Corresponds to the railway standard EN 50121-3-2:2006, table 9.1.

Valid for 24IMS15 and 48IMS15

2

3

4

5

6

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IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Table 11: External capacitors across the input to comply with

EN 55011/EN 55022, Class A, conducted; see fig. 17a, b, c

Conducted Emissions

PMM 8000 PLUS

Date: 24.04.06

Time: 16:23

Name: 20d12_1

20IMX15-12-12-8 Peak

dbµV

Model

Ceramic ML Electrolytic capacitor

80

60

40

20

0

20IMX15, 24IMS15

40IMX15, 48IMS15

110IMY15

0.47 µF/50 V

0.33 µF/100 V

0.15 µF/200 V

220 µF/50 V

220 µF/100 V

4.7 µF/200 V

EN 55022 A

PMM 8000 PLUS

Name: 40d12_4

Date: 02.05.06

40IMX15-12-12-8-Peak

Time: 09:58

dbµV

60

EN 55022 B

0.2

0.5

1

2

5

10

20 MHz

Fig. 17a

40

20

Typ. disturbance voltage (peak) at pos. input according to EN

55011/022, measured at V_{i nom}and I_{o nom}. Output leads 0.1 m,

twisted, input capacitors see table 11 (20IMX15-12-12-8)

0

Date: 24.04.06

40IMX15-12-12-8 Peak

Time: 15:2

PMM 8000 PLUS

Name: 40d12_1

0.2

0.5

1

2

5

10

20 MHz

dbµV

80

EN 55022 A

Fig. 18

Typ. disturbance voltage (peak) at input according to EN

55011/022, measured at V_{i nom}and I_{o nom}. Output leads 0.1 m,

twisted, input filter as in fig. 19 (40IMX15-12-12-8)

60

40

20

0

JM126

Vi+

Vi–

22 µH

0.2

0.5

1

2

5

10

20 MHz

40IMX15

22 nF

47 µF

330 nF

47 µF

Fig. 17b

Typ. disturbance voltage (peak) at pos. input according to EN

55011/022, measured at V_{i nom}and I_{o nom}. Output leads 0.1 m,

twisted, input capacitors see table 11 (40IMX15-12-12-8)

Fig. 19

Example for external circuitry to comply with EN 55011/ EN

55022, Class B, conducted.

This filter was designed for a 40IMX15-12-12-8. All

capacitors are rated to 100 V, the chokes to 1.5 A.

Date: 25.04.06

110IMY15-12-12-9

Time: 08:07

Peak

PMM 8000 PLUS

Name: 110d12_1

dbµV

80

EN 55022 A

60

40

20

0

0.2

0.5

1

2

5

10

20 MHz

Fig. 17c

Typ. disturbance voltage (peak) at pos. input according to EN

55011/022, measured at V_{i nom}and I_{o nom}

.

Output leads 0.1 m, twisted, input capacitors see table 11

(110IMY15-12-12-8)

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IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Immunity to Environmental Conditions

Table 12: Mechanical and climatic stress

Test Method

Standard

Test Conditions

Temperature:

Status

Cab

Ea¹

Eb

Damp heat

steady state

IEC/EN 60068-2-78

MIL-STD-810D sect. 507.2 Relative humidity:

Duration:

40^±2ꢀC

93 ^+2/-3

%

56 days

Converter

not

operating

Shock

(half-sinusoidal)

IEC/EN 60068-2-27

MIL-STD-810D sect. 516.3 Bump duration:

Number of bumps:

Acceleration amplitude:

50 g_n= 490 m/s²

11 ms

18 (3 each direction)

Converter

operating

Bump

IEC/EN 60068-2-29

MIL-STD-810D sect. 516.3 Bump duration:

Number of bumps:

Acceleration amplitude:

25 g_n= 245 m/s²

1 ms

6000 (1000 each direction)

Converter

operating

(half-sinusoidal)

Fc

Vibration

(sinusoidal)

IEC/EN 60068-2-6

Acceleration amplitude:

0.35 mm (10 to 60 Hz)

5 g_n= 49 m/s²(60 to 2000 Hz)

10 to 2000 Hz

Converter

operating

Frequency (1 Oct/min):

Test duration:

7.5 h (2.5 h each axis)

Fda

Random vibration IEC/EN 60068-2-35

Acceleration spectral density:0.05 g_n²/Hz

Converter

operating

wide band

reproducibility

high

Frequency band:

Acceleration magnitude:

Test duration:

20 to 500 Hz

4.9 g_{n rms}

3 h (1 h each axis)

--

1

Salt mist test

sodium chloride

(NaCl) solution

EN 50155:2007,

clause 12.2.10

class ST2

Temperature:

Duration:

35^±2°C

16 h

Converter

not

operating

Covers also EN 50155 /61373 category 1, class B, body mount (= chassis of a coach)

Temperatures

Table 14: Temperature specifications

Valid for air pressure of 800 to 1200 hPa (800 to 1200 mbar)

Temperature

-9

-8

Unit

Characteristics

Conditions

Operational¹

min

–40

–55

max

71

min

–40 ^{2, 3}

–55

max

85

T_A

T_C

T_S

Ambient temperature

°C

Case temperature

95

105

Storage temperature

Non operational

100

1

2

3

See Thermal Considerations

Start-up at –55 °C, except models with synchronos rectifier

–25 °C for all models with synchronous rectifier ^SRwith Revision < BA.

SR

Reliability

Table 13: MTBF

Model

Standard

Ground Benign

T_C= 40 °C

697 000

Ground Fixed

Ground Mobile

T_C= 50 °C

312 000

Unit

T_C= 40 °C

T_C= 70 °C

229 000

632 000

179 000

167 000

394 000

20IMX15-12-12-8

20IMX15-15-15-8

48IMS15-05-05-9

110IMY15-05-8R

MIL-HDBK-217F

Belcore

366 000

1 172 000

283 000

255 000

774 000

h

2 345 000

535 000

317 000

MIL-HDBK-217F

Belcore

245 000

485 000

223 000

1 547 000

206 000

MELCHER

The Power Partners.

BCD20008-G Rev AD, 10-Aug-2015

Page 16 of 19

IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Mechanical Data

Dimensions in mm (inches). Tolerances ±0.3 mm, unless otherwise noted.

European

Projection

Measuring point of case temperature T_C

0.8 (0.03")

for holes with

1.4 mm

10.5 0.3 (0.41")

45.72 (1.8")

S09011c

11

12

13

1

2

3

4

15

17

bottom view

≥5 (0.19")

Fixing hole for

M2 or KA 22

self-tapping screws

47 (1.85")

50.9 (2")

Fig. 20

Case IMX15, IMS15, IMY15

Material: Fortron 1140L6

Weight: <35 g

0.8 (0.03")

for holes with

1.4 mm

8.9 0.3 (0.35")

45.72 (1.8")

S90011c

11

12

13

1

2

3

4

15

17

bottom view

≥5 (0.19")

48.3 (1.9")

Fig. 21

Open frame (option Z)

MELCHER

The Power Partners.

BCD20008-G Rev AD, 10-Aug-2015

Page 17 of 19

IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

CSA 60950-1 2^ndEdition. 110IMY models are fitted with a CE

mark.

Safety and Installation Instructions

Pin allocation

The converters have been evaluated for:

• Building in

Table 15: Pin allocation

• Supplementary insulation input to output, based on their

maximum input voltage (IMX15, IMS15)

Standard and Option Z

single

double

Vi+

-0503-

• Reinforced insulation input to output, based on their

maximum input voltage (IMY15 models)

1

2

Vi+

Vi–

n.c.

SD

-

Vi–

• Pollution degree 2 environment (not option Z)

3

-

Trim

SD

• Connecting the input to a secondary circuit subject to a

maximum transient rating of 1500 V (IMX15, IMS15)

4

SD

• Connecting the input to a secondary circuit subject to a

maximum transient rating of 2500 V (IMY15)

5

-

6

-

The converters are subject to manufacturing surveillance in

accordance with the above mentioned UL standards and with

ISO9001:2008.

11

12

13

15

17

Vo1+

Vo1–

Vo2+

Vo2–

n.c.

Vo2+

Go

Vo1+

Go

R

-

Vo+

Vo–

R

Railway Applications

To comply with railway standards, all components are coated

with a protective lacquer (except option Z).

Protection Degree and Cleaning Liquids

10005

The protection degree of the converters is IP 40, except open-

frame models (option Z).

11

12

13

In order to avoid possible damage, any penetration of

cleaning fluids should be prevented, since the power

supplies are not hermetical sealed.

1

2

3

4

Bottom view

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. If necessary, the mother board must be

cleaned, before fitting the open-frame converter.

15

17

Fig. 22

Footprint

Note: Cleaning liquids may damage the adhesive joints of the ferrite

cores.

Installation Instructions

Isolation

Installation must strictly follow the national safety regulations

in compliance with the enclosure, mounting, creepage,

clearance, casualty, markings and segregation requirements

of the end-use application.

The electric strength test is performed in the factory as routine

test in accordance with EN 50514 and IEC/EN 60950. The

Company will not honor any warranty claims resulting from

incorrectly executed electric strength field tests.

Connection to the system shall be made via a printed circuit

board with hole diameters of 1.4 mm ±0.1 mm for the pins.

Table 16: Electric strength test voltages

The converter must be connected to a secondary circuit.

Do not open the converter.

Characteristic

Input to output

IMS15 IMX15 IMY15

Output to Unit

output

Ensure that a converter failure (e.g., by an internal short-

circuit) does not result in a hazardous condition.

Factory test ≥1 s

1.2

1.5¹

3.0

0.1

0.15

-

kVAC

kVDC

MΩ

EquivalentDCvoltage (1.7) (2.1)

(4.2)

Input Fuse

Insulation resistance >100 >100 >100

at 500 VDC

To prevent excessive current flowing through the input supply

lines in case of a malfunction an external fuse should be

installed in a non-earthed input supply line; see table 4.

Partial discharge

extinction voltage

Consult the Company

-

kV

1

1.5 kVAC according to IEC 60950, sect. 6.2, Telecom equipment;

type test with 1.5 kVAC / 60 s (IEE 802.3). IMX15 units produced

before 2013 were tested only with 1.2 kVAC.

Standards and Approvals

The converters are approved according to IEC 60950-1 and UL/

2

The test voltage between outputs is not applied as routine test.

MELCHER

The Power Partners.

BCD20008-G Rev AD, 10-Aug-2015

Page 18 of 19

IMX15, IMY15, IMS15 Series Data Sheet

15 Watt DC-DC Converters

Description of Options

Table 17: Survey of options

Option

Function of option

Characteristic

-9

R

i

Temperature range, NFND

See table Temperatures specifications

Magnetic feedback for models without sychr. rectifier

Replaces the shutdown function

R-input and magnetic feedback; NFND as option R

Inhibit

Z

Open frame

See Mechanical Data

Option -9 versus -8

should be connected to Vi– to enable the output (active low

logic, fail safe).

IMX15 and IMY15 models with -9 (not for new designs) have a

limited temperature range. Standard models with suffix -8 are

rated up to T_A= 85 °C; see table Temperature specifications.

Voltage on pin i:

Converter operating:

Converter inhibited:

–10 V to 0.8 V

2.4 V to V_{i max}(<75 V) or

Option R

pin i left open-circuit:

Magnetic feedback from the output for closer regulation of the

output voltage V_o1of double output units (standard for single

output units and -0503- models). It enables the adjustment of

the output voltages via the R-input (pin 17) on the secondary

side by an external resistor or an external voltage source. This

function is described in Auxiliary Functions.

06070

Vi+

i

Furthermore, the output 1 is accurately regulated like the

single output models. The Trim input (pin 3) is not connected.

Vi–

Fig. 23

Option i: Inhibit

If the inhibit function is not used, the inhibit pin should be

connected to Vi–.

Excludes the shut-down function.

The output(s) of the converter may be enabled or disabled by

means of a logic signal (TTL, CMOS, etc.) applied to the inhibit

pin. No output voltage overshoot will occur, when the converter

is turned on. If the inhibit function is not required, the inhibit pin

Option G or -G

Products RoHS-compliant for all 6 substances. See sect.

RoHS-Compliant Models (page 3) for the correct denotation.

Accessories

Supports are available for chassis mounting (CMBIMX15,

HZZ00626) and DIN-rail mounting (DMBIMX15, HZZ00625).

They exhibit the connectors and allow for placing different

external components. For details see our Mounting Supports

Data Sheet BCD20007 on our website.

Fig. 24

DIN-rail mounting

support HZZ00625.

NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems,

equipment used in hazardous environments, or nuclear control systems.

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.

www.belpowersolutions.com/power

MELCHER

The Power Partners.

BCD20008-G Rev AD, 10-Aug-2015

Page 19 of 19


型号：	40IMX4-1212-8G
厂家：	BEL FUSE INC.
描述：	DC-DC Regulated Power Supply Module, 2 Output, 4.1W, Hybrid, 8.5 MM, DIP-24 输出元件
文件：	总19页 (文件大小：541K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

40IMX4-1212-8G [BEL]

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