110IMY15-05-8RGZ - Power-One

BCD20008-G Rev AC, 26-Nov-2012 Page 1 of 19 www.power-one.com

IMX15, IMS15, IMY15 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

• 1200 to 3000 VAC I/O electric strength test

• Emissions EN 55022 level A

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

• High efficiency (typ. 86%)

• 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

Description

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 telecommu-

nications, where variable input voltages or high transient

voltages are prevalent.

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.

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

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.

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.

Table of Contents Page Page

2.0"

40.6

1.6"

10.5

0.42"

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

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

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

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

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

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

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

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

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

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

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

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

2nd Edition

1 110IMY15

models

BCD20008-G Rev AC, 26-Nov-2012 Page 2 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Model Selection

Table 1: Model Selection

Output 1 Output 2 Output Input voltage Efficiency Model Options 2

Vo nom Io nom 1 Vo nom Io nom 1 power Vi min to Vi max ηη

ηη

ηmin

6 ηη

ηη

ηtyp 6

[VDC] [A] [VDC] [A] Po nom [W] [VDC] [%] [%]

3.3 4.5 - - 14.9 8.4 to 36 580 82 20IMX15-03-8RG SR -9, i, Z, -G

3.3 4.0 - - 13.2 16.8 to 75 3 78 80 40IMX15-03-8R i, Z

3.3 4.5 - - 14.9 16.8 to 75 3 81 83 40IMX15-03-8RG SR -9, i, Z, -G

3.3 4.5 - - 14.9 50 to 150 4 80 82 110IMY15-03-8RG SR i, Z, -G

5.1 3.5 - - 17.5 8.4 to 36 583 86 20IMX15-05-8RG SR i, Z, -G

5.1 3.5 - - 17.5 16.8 to 75 3 85 87 40IMX15-05-8RG SR i, Z, -G

5.1 3.5 - - 17.5 50 to 150 4 79.5 82 110IMY15-05-8RG SR i, Z, -G

5.1 2.3 - - 11.7 8.4 to 36 582 84 20IMX15-05-8R -9, i, Z

5.1 2.7 - - 13.8 14 to 36 81.5 84 24IMS15-05-9R i, Z

5.1 2.5 - - 12.8 16.8 to 75 3 81.5 83 40IMX15-05-8R -9, i, Z

5.1 2.7 - - 13.8 36 to 75 82 83 48IMS15-05-9R i, Z

5.1 2.5 - - 12.8 50 to 150 4 78 81 110IMY15-05-8R i, Z

5.1 1.35 3.3 1.35 11.3 8.4 to 36 582 84 20IMX15-0503-8R -9, i, Z, G

5.1 1.6 3.3 1.6 13.5 14 to 36 81 83 24IMS15-0503-9R i, Z

5.1 1.5 3.3 1.5 12.6 16.8 to 75 3 82 84 40IMX15-0503-8R -9, i, Z, G

5.1 1.6 3.3 1.6 13.5 36 to 75 79 82 48IMS15-0503-9R i, Z

5.1 1.5 3.3 1.5 12.6 50 to 150 4 79 82 110IMY15-0503-8R i, Z, G

5 1.3 5 1.3 13.0 8.4 to 36 582 85 20IMX15-05-05-8 -9, i, R, Z, G

5 1.4 5 1.4 14.0 14 to 36 81 84 24IMS15-05-05-9 i, Z

5 1.4 5 1.4 14.0 16.8 to 75 3 81 84 40IMX15-05-05-8 -9, i, R, Z, G

5 1.4 5 1.4 14.0 36 to 75 81 83 48IMS15-05-05-9 i, Z

5 1.4 5 1.4 14.0 50 to 150 4 80 82 110IMY15-05-05-8 i, Z, G

12 0.65 12 0.65 15.6 8.4 to 36 583 86 20IMX15-12-12-8 -9, i, Z, G

12 0.7 12 0.7 16.8 14 to 36 83 86 24IMS15-12-12-9 i, Z

12 0.7 12 0.7 16.8 16.8 to 75 3 84 87 40IMX15-12-12-8 -9, i, R, Z, G

12 0.7 12 0.7 16.8 36 to 75 82 86 48IMS15-12-12-9 i, Z

12 0.7 12 0.7 16.8 50 to 150 4 82 85 110IMY15-12-12-8 i, Z, G

15 0.5 15 0.5 15.0 8.4 to 36 585 88 20IMX15-15-15-8 -9, i, R, Z, G

15 0.56 15 0.56 16.8 14 to 36 83 86 24IMS15-15-15-9 i, Z

15 0.56 15 0.56 16.8 16.8 to 75 3 83 86 40IMX15-15-15-8 -9, i, R, Z, G

15 0.56 15 0.56 16.8 36 to 75 84 86 48IMS15-15-15-9 i, Z

15 0.56 15 0.56 16.8 50 to 150 4 82 85 110IMY15-15-15-8 i, Z, G

24 0.32 24 0.32 15.4 8.4 to 36 583 86 20IMX15-24-24-8 -9, i, R, Z, G

24 0.35 24 0.35 16.8 14 to 36 84 87 24IMS15-24-24-9 i, Z

24 0.35 24 0.35 16.8 16.8 to 75 3 84 86 40IMX15-24-24-8 -9, i, R, Z, G

24 0.35 24 0.35 16.8 36 to 75 83 86 48IMS15-24-24-9 i, Z

24 0.35 24 0.35 16.8 50 to 150 4 82 85 110IMY15-24-24-8 i, Z, G

1Flexible load distribution on dual and double outputs possible; up to 75% of the total output power Po 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 Po nom.

2See Description of Options.

3Short-time operation down to Vi = 14.4 V possible (Po reduced to approx. 85% of Po nom)

4Short-time operation down to Vi = 43.2 V possible (Po reduced to approx. 85% of Po nom) and up to 154 V

5Initial start-up at 9 V, main output voltage regulation down to 8.4 V

6Efficiency at TA = 25 °C, Vi nom, Io 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 20IMS15-05, 40IMS15-05, and 110IMY15 by models with with synchronos rectifier SR;

For new designs, chose the always the RoHS version.

BCD20008-G Rev AC, 26-Nov-2012 Page 3 of 19 www.power-one.com

IMX15, IMS15, IMY15 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 synchronous rectifier. This is an exception to Power-One's 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. As an example

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

– 20IMX15-05-8RG means a synchronous rectifier version which is not RoHS-compliant.

– 20IMX15-05-8RG-G means a synchronous rectifier version 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 Vi

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 TA

–40

5 to 85 °C ............................................. -8

–40

5 to 71 °C ............................................. -9 2

Options and features:

R input and magnetic feedback ................. R 3

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

Inhibit ............................................................ i 4

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

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

1Not applicable to -0503 models.

2IMS15 models are not recommended for new designs.

3Standard for single-output and -0503- models, not for new designs of other models

4Option i excludes shutdown.

5Only –25 °C for -RG models

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

Examples: 20 IM X15-05-05-8: DC-DC converter, input voltage 9 to 36 V, 2 galvanically isolated outputs each providing

5 V, 1.3 A.

110 IMY15-0503-8R: 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, Power-One patent nos., company logo, date code, and serial number.

BCD20008-G Rev AC, 26-Nov-2012 Page 4 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Functional Description

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 Vo nom, using either an external

resistor or an external voltage source.

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

synchronos rectifier to improve the efficiency.

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 Vo 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.

Current limitation is provided by the primary circuit, thus

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

shut-down input allows remote converter on/off.

Overtemperature protection will disable the converter under

excessive overload conditions with automatic restart.

Fig. 1

Block diagram of single-output models

Fig. 2

Block diagram of -0503-models

Fig. 3

Block diagram of double-output models

PWM

2 x 2200 pF

1500 V

Vi+

Vi–

Vo+

Vo–

03039

17 R

PWM

2 x 2200 pF

Vi+

Vi –

Vo1+

n.c. Vo2+

03089

PWM

2 x 2200 pF

Vi+

Vi –

Vo1+

Vo1–

Trim Vo2+

Vo2–

03090

17 n.c.

BCD20008-G Rev AC, 26-Nov-2012 Page 5 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

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

ViInput voltage range

1TA min – TA max 9 5 8 36 16.8 5 6 75 50 5 7 150 V

Vi nom Nominal input voltage Io = 0 – Io nom 20 40 110

Vi sur Repetitive surge voltage Abs. max input (3 s) 40 100 168

tstartup Converter Switch on Worst case condition at 0.25 0.5 0.25 0.5 0.5 0.7 s

start-up time 2 SD high Vi min, Io = Io nom 0.1 0.1 0.1

trise Rise time 2 Vi nom, resistive load 5 5 5 ms

Io nom, capac. load 10 20 10 20 10 20

Ii o No-load input current Io = 0, Vi min – Vi max 65 45 15 mA

Iirr Reflected ripple current Io = 0 – Io nom 30 30 20 mApp

Iinr p Inrush peak current 3 Vi = Vi nom 8910A

CiInput capacitance for surge calculation 1.5 0.75 0.35 µF

–D

–Shut-down voltage Converter disabled –10 to 0.7 –10 to 0.7 –10 to 0.7 V

Converter operating open or 2 – 20 open or 2 – 20 open or 2 – 20

–

–Shut-down input resistance approx. 10 approx. 10 approx. 10 kΩ

–D

–Input current, when Vi min – Vi max 10 3 1 mA

disabled SD connected to Vi–

fsSwitching frequency Vi min – Vi max, approx. 300 approx. 300 approx. 300 kHz

Io = 0 – Io nom

Vi RFI Input RFI level conducted EN 55022 4 AA A

1If Vo is set above Vo nom by use of the R or Trim input, Vi min will be proportionately increased.

2Measured with resistive and max. admissible capacitive load. Valid for models with rev. AI or greater.

3Source impedance according to ETS 300132-2, version 4.3.

4Measured with a ceramic capacitor Ci directly across input; output lead length 0.1 m, leads twisted. Double-output models with both

outputs in parallel. Ci is specified in table 11.

5Input undervoltage lockout at typ. 80% of Vi min.

6Short time operation down to Vi min >14.4 V possible. Po reduced to approx. 85% of Po nom.

7Short time operation down to Vi min >43.2 V possible. Po reduced to approx. 85% of Po nom.

8Initial start-up at Vi = 9 V, main output voltage regulation down to 8.4 V

Electrical Input Data

General conditions:

–T

A = 25 °C, unless TC is specified.

– Shut-down pin left open-circuit.

– Trim or R input left open-circuit.

BCD20008-G Rev AC, 26-Nov-2012 Page 6 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

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

Input 24IMS 48IMS Unit

Characteristics Conditions min typ max min typ max

ViInput voltage range

1TA min – TA max 14 36 36 75 V

Vi nom Nominal input voltage Io = 0 – Io nom 24 48

Vi sur Repetitive surge voltage Abs. max input (3 s) 50 100

tstartup Converter Switch on Worst case condition at 0.25 0.5 0.25 0.5 s

start-up time 2 SD high Vi min, Io = Io nom 0.1 0.1

trise Rise time 2 Vi nom, resistive load 5 5 ms

Io nom, capac. load 10 20 10 20

Ii o No-load input current Io = 0, Vi min – Vi max 20 40 10 20 mA

Iirr Reflected ripple current Io = 0 – Io nom 30 30 mApp

Iinr p Inrush peak current 3 Vi = Vi nom 5 4.5 A

CiInput capacitance for surge calculation 4 2 µF

–D

–Shut-down voltage Converter disabled –10 to 0.7 –10 to 0.7 V

Converter operating open or 2 – 20 open or 2 – 20

–D

–Shut-down input resistance approx. 10 approx. 10 kΩ

–D

–Input current, when Vi min – Vi max 1.2 3 1.2 3 mA

disabled SD connected to Vi–

fsSwitching frequency Vi min – Vi max, approx. 300 approx. 300 kHz

Io = 0 – Io nom

Vi RFI Input RFI level conducted EN 55022 4 AA

1If Vo is set above Vo nom by use of the R or Trim input, Vi min will be proportionately increased.

2Measured with resistive and max. admissible capacitive load.

3Source impedance according to ETS 300132-2, version 4.3.

4Measured with a ceramic capacitor Ci directly across input; output lead length 0.1 m, leads twisted. Double-output models with both

outputs in parallel. Ci is specified in table 11.

5Input undervoltage lockout at typ. 80% of Vi min.

BCD20008-G Rev AC, 26-Nov-2012 Page 7 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Input Transient Voltage Protection

A built-in suppressor diode provides effective protection

against input transients, which typically occur in many

installations.

Table 5: Built-in transient voltage suppressor

Type Breakdown Peak power Peak pulse

voltage at 1 ms current

VBr nom [V] Pp [W] Ipp [A]

20IMX15 40 1500 22

24IMS15 53 600 7.7

40IMX15 100 1500 9.7

48IMS15 100 600 4.1

110IMY15 168 600 0.5

Fuse and Reverse Polarity Protection

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.

Inrush Current

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.

Fig. 4

Typical inrush current at Vi nom, P

o nom versus time

(40IMX15). Source impedance according to

ETS 300132-2 at Vi nom.

Fig. 5

Converter start-up and rise time

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.

Fig. 6

Example for external circuitry to achieve better transient

immunity. The diode D is only necessary for 20IMX15

models.

Table 6:

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

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

Model Inductor (L) Capacitor (C) Diode (D)

20IMX15 68 µH, 2.7 A 330 µF, 63 V 1.5 k E47A

24IMS15 150 µH, 1.3 A 150 µF, 63 V -

40IMX15 220 µH, 1.3 A 2 x 100 µF, 100 V -

48IMS15 150 µH, 1 A 100 µF, 100 V -

110IMY15 330 µH, 0.4 A 2 x 100 µF, 200 V -

Table 4: Recommended external fuses

Model Fuse type

20IMX15 F 4.0 A

24IMS15 F 3.15 A

40IMX15, 48IMS15 F 2.0 A

110IMY15 F 1.0 A

o nom

startup

rise

04008b

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.

Tab. 3: Turn on and turn off voltage

Model Turn on Turn off Unit

min max min max

20IMX15 7.5 8 7 7.5 V

24IMS15 12.5 13.5 12 13

40IMX15 12.5 13.5 12 13

48IMS15 31.5 32.5 31 32

110IMY15 40 42.5 38 40.5

Vi+

Vi–

04036a

04022b

020 40 60 80 100 µs

BCD20008-G Rev AC, 26-Nov-2012 Page 8 of 19 www.power-one.com

IMX15, IMS15, IMY15 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:

– TA = 25°C, unless TC is specified

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

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

1 and 05-8RG

Output 3.3 V 5.1 V Unit

Characteristics Conditions min typ max min typ max

VoOutput voltage Vi nom 3.25 3.35 5.05 5.15 V

Io = 0.5 Io nom

Io nom Output current 20IMX Vi min to Vi max 4.5 3.5 A

40IMX /110IMY 4.5 3.5

Io L Current limit 2 Vi nom, TC = 25 °C 6.0 4.6

Vo ≤ 93% Vo nom

∆VoLine/load regulation Vi min to Vi max, ±0.5 ±0.5 %

(0.1 to 1) Io nom

VoOutput voltage noise Vi min to Vi max 4100 100 mVpp

Io = Io nom 560 60

Vo L Output overvoltage limit. 3 115 130 115 130 %

Co ext Admissible capacitive load 0 4000 0 4000 µF

Vo d Dynamic Voltage deviat. Vi nom ±250 ±250 mV

tdload Recovery time Io nom ↔ 1/2 Io nom 11ms

regulation IEC/EN 61204

αVo Temperature coefficient Vi min to Vi max ±0.02 ±0.02 %/K

∆Vo/∆TC(0.1 to 1) Io nom

1All models -RG (synchronous rectifier) have a minimum case and operating temperature of –25 °C.

2The 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).

3The overvoltage protection is via a primary side second regulation loop. It is not tracking with R control.

4BW = 20 MHz

5Measured with a probe according to EN 61204

BCD20008-G Rev AC, 26-Nov-2012 Page 9 of 19 www.power-one.com

IMX15, IMS15, IMY15 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 5.1/3.3 V Unit

Characteristics Conditions min typ max min typ max

Vo, Vo1 Output voltage Vi nom 5.05 5.15 5.0 5.12 V

Vo2 Io = 0.5 Io nom 3.13 3.46

Io nom Output current 1 20IMX Vi min – Vi max 2.3 2 × 1.35 1.6 4 A

24IMS/48IMS 2.7 2 × 1.6 2.0 4

40IMX/110IMY 2.5 2 × 1.5 1.8 4

IoL, Io1L Current limit 2 20IMX Vi nom 3.2 2.7

Io2L Vo1 ≤ 93% Vo nom 3.8

IoL, Io1L 24IMS/48IMS 3.5 3.0

Io2L 3.8

IoL/Io1L 40IMX/110IMY 3.6 2.9

Io2L 4.0

∆VoLine/load regulation 5.1 V Vi min – Vi max, ±0.5 – %

5.1 V (0.1 – 1) Io nom –+3, –5

3.3 V – ±4.5

Vo1/2 Output voltage noise Vi min – Vi max 570 80 mVpp

Io = Io nom 640 40

Vo L Output overvoltage limit 7 115 130 115 130 %

Co ext Admissible capacitive load 0 4000 0 4000 3 µF

Vo d Dynamic Voltage deviat. Vi nom ±250 ±150 mV

tdload Recovery time Io nom ↔ 1/2 Io nom 11ms

regulation IEC/EN 61204

αVo Temperature coefficient Vi min – Vi max ±0.02 ±0.02 %/K

∆Vo/∆TC(0.1 – 1) Io nom

1Flexible load distribution: Io max for one of the 2 outputs; however the total load should not exceed Po nom specified in the table Model

Selection.

2The current limit is primary-side controlled.

3For -0503-models: total capacitive load of both outputs.

4For -0503-models: Conditions for specified output. Other output loaded with constant current Io = 0.5 Io nom.

5BW = 20 MHz

6Measured with a probe according to EN 61204

7The overvoltage protection is via a primary side second regulation loop. It is not tracking with R control.

BCD20008-G Rev AC, 26-Nov-2012 Page 10 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Table 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 min typ max min typ max min typ max min typ max

Vo1 Output 1 24IMS/48IMS Vi nom 4.95 5.05 11.88 12.12 14.85 15.15 23.70 24.30 V

other models Io = 0.5 Io nom 4.95 5.05 11.90 12.10 14.88 15.12 23.80 24.20

Vo2 Output 2 24IMS/48IMS 4.94 5.06 11.84 12.16 14.80 15.20 23.64 24.36

other models 4.94 5.06 11.88 12.12 14.85 15.15 23.75 24.25

Io nom Output current 1 20IMX Vi min – Vi max 2 ××

××

× 1.3 2 ××

××

× 0.65 2

××

× 0.50 2 ××

××

× 0.32 A

other models 2 ××

××

× 1.4 2 ××

××

× 0.70 2 ××

××

× 0.56 2 ××

××

× 0.35

IoL Current limit 2, 4 20IMX Vi nom 3.0 1.6 1.3 0.85

24IMS/48IMS Vo1 ≤ 93% Vo nom 3.5 1.9 1.6 0.95

40IMX/110IMY 3.2 1.7 1.4 0.90

∆Vo1 Line/load regulation output 1 Vi min – Vi max, Io nom ±1 ±1 ±1 ±1 %

∆Vo2 output 2 Vi nom, (0.1 – 1) Io nom ±3 ±3 ±3 ±3

Vo1/2 Output voltage noise Vi min – Vi max 580 120 150 240 mVpp

Io = Io nom 640 60 70 120

Vo L Output overvoltage limit 7 Min. load 1% 115 130 115 130 115 130 115 130 %

Co ext Admissible capacitive load 3 0 4000 0 680 0 470 0 180 µF

Vo d Dynamic Voltage deviat. Vi nom ±250 ±300 ±300 ±600 mV

tdload Recovery time Io nom ↔ 1/2 Io nom 11 1 1ms

regulation

αUo Temperature coefficient Vi min – Vi max ±0.02 ±0.02 ±0.02 ±0.02 %/K

∆Vo/∆TC(0.1 – 1) Io nom

1Flexible 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 Po nom specified in the table Model Selection.

2The current limit is primary-side controlled.

3Measured with both outputs connected in parallel.

4Conditions for specified output. Other output loaded with constant current Io = 0.5 Io nom.

5BW = 20 MHz

6Measured with a probe according to EN 61204

7The overvoltage protection is via a primary side second regulation loop, not tracking with Trim or R control.

BCD20008-G Rev AC, 26-Nov-2012 Page 11 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Thermal Considerations

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

stationary air (convection cooling) at the indicated maximum

ambient temperature TA 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 TC (see Mechanical

Data) will approach the indicated value TC max after the warm-

up phase. However, the relationship between TA and TC

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. TA max is therefore only an indicative value.

Caution: The case temperature TC measured at the measuring

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

circumstances exceed the specified maximum value. The installer

must ensure that under all operating conditions TC remains within

the limits stated in the table Temperature specifications.

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.

Output Overvoltage Protection

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.

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.

Fig. 9

Vo versus Io (typ) of converters with Vo = 5.1 V

(110IMY15-05-8R)

5.5

5.0

4.5

4.0

3.5

3.0

0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4

05166a

Fig. 8

Overload switch-off (hiccup mode); typical values

100

[%]

05041b

0.3 s

overload short-circuit condition

switch-off

1.0

0.8

0.6

0.4

0.2

40 60 80

100 °C

Po/Po max

JM017

0.5 m/s

100 LFM

natural cooling

Short Circuit Behaviour

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

Fig. 7

Maximum output power versus ambient temperature

models 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.

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.

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

used, connect it in parallel to the 1st output.

Typical Performance Curves

General conditions:

– TA = 25 ºC, unless TC is specified.

– Shutdown pin left open-circuit.

– Trim or R input not connected.

BCD20008-G Rev AC, 26-Nov-2012 Page 12 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Fig. 10

Vo versus Io (typ.) of double-output models (2 x 12 V), with

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

0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 A

05020a

Fig. 12a

Efficiency versus input voltage and load. Typical values

(40IMX15-12-12-8).

Fig. 11

Cross load regulation Vo1 versus Io1 (typ.) for various Io2

(2 x 12 V).

Fig. 13

Flexible load distribution on double-outputs models with

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

Load variation from 0 to 150% of Io1 nom on output 1;

output 2 loaded with 50% of Io2 nom.

Fig. 12b

Efficiency versus input voltage and load. Typical values

(110IMY15-12-12-8)

11.5

12.5

13.5

0.2 0.3 0.4 0.5 0.6 0.7 A

0.1

05021a

= 0.35 A

= 0.035 A

0.5 0.75 1 P

o nom

0.25

05167a

i min

i nom

i max

0.5 0.75

0.25

05168a

i min

i nom

i max

1 P

o no

Fig. 12c

Efficiency versus input voltage and load. Typical values

(48IMS15-12-12-9)

05040a

0.25 0.5 0.75 1 I

o1 nom

i nom

i max

i min

o1 nom

05039-X15b

10 0 0.25 0.5 0.75 11.5

1.25

BCD20008-G Rev AC, 26-Nov-2012 Page 13 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Table 8: Vo versus Vext approximate values

Vo nom Typ. values of Rext1 Typ. values of Rext2

[V] Vo [% of Vo nom] R

ext1 [kΩΩ

ΩΩ

Ω]Vo [% of Vo nom] R

ext2 [kΩΩ

ΩΩ

Ω]

3.3 90 0.47 100 ∞

95 2.7 105 15

100 ∞110 6.8

5.1 90 3.3 100 ∞

95 8.2 105 9.1

100 ∞110 3.9

Auxiliary Functions

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.

•Converter operating: 2.0 to 20 V

•Converter disabled: –10 to +0.7 V

Adjustable Output Voltage

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

•Trim input for double-output models

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

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 Vo nom. For output voltages Vo > Vo nom, the

minimum input voltage Vi min (see Electrical Input Data)

increases proportionally to Vo/Vo nom.

Single-output models with synchronous rectifier (G):

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–.

Note: For models with synchronous rectifier the logic for Vo

adjustment differs from other models with R input.

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

an external resistor or an external voltage source Vext.

Fig. 16

Output voltage control for double-output models (without

option R) by means of the Trim input.

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.

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. 14

Output voltage control for single-output models with

synchronous rectifier.

a) Adjustment by means of an external resistor Rext.

Depending upon the value of the required output voltage,

the resistor shall be connected:

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

voltage adjustment range of Vo ≈ 80 to 100 % of Vo nom.

Rext1 ≈ 4 kΩ • –––––––––

Vo nom – Vo

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

range of Vo ≈ 100 to 105% of Vo nom.

(Vo – 2.5V)

Rext2 ≈ 4 kΩ • ––––––––––––––––––

2.5 V • (Vo/Vo nom – 1)

b) Adjustment by means of an external voltage Vext

between Vo– and R pin.

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

adjustment in the range of Vo ≈ 80 to 105% of Vo nom.

Vo • 2.5 V

Vext ≈ ––––––––

Vo nom

Attempting to adjust the output below this range will cause

the converter to shut down (hiccup mode).

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

the converter.

Vo+

Vo–

Vi+

Vi–

Rext2

Rext1

06131

Trim

Vo1+

Vo2–

Vext

–

Vi+

Vi–

Rext

Vo1–

Vo2+

06089a

Control

circuit

Vref 2.5 V

Vo+

Vo–

–

4 kΩ

ref

= 2.5 V

Control

logic R

ext1

ext2

06029e

Vi–

Vi+

BCD20008-G Rev AC, 26-Nov-2012 Page 14 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Table 9b: Vo versus Vext for Vo = 75 to 105% Vo nom;

typical values (Vi nom, Io1/2 = 0.5 Io1/2 nom)

Vo [% Vo nom]Vext [V]

≥105 0

102 1.6

95 4.5

85 9

75 13

Table 9a: Rext for Vo > Vo nom;

approximate values (Vi nom, Io1, 2 = 0.5 Io1/2 nom )

Vo [% Vo nom]Rext [kΩΩ

ΩΩ

Ω]

105 to 108 (107 typically) 0

105 1.5

104 5.6

103 12

102 27

101 68

100 ∞

a) Adjustment by means of an external resistor Rext:

Programming of the output voltage by means of an external

resistor Rext is possible within 100 to 105% of Vo nom. Rext

should be connected between the Trim pin and Vi–.

Connection of Rext to Vi+ may damage the converter. The

table below indicates suitable resistor values for typical

output voltages under nominal conditions (Vi nom, Io = 0.5

Io nom) with either parallel-connected outputs or equal-load

conditions on both outputs.

b) Adjustment by an external voltage source Vext:

For programming the output voltage in the range 75 to

105% of Vo nom, a source Vext (0 to 20 V) is required,

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

indicates values Vo versus Vext (nominal conditions Vi nom, Io

= 0.5 Io 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.

typically occur in many installations, but especially in battery-

driven mobile applications.

Electromagnetic Compatibility (EMC)

A suppressor diode together with an input filter forms an

effective protection against high input transient voltages, which

Table 10: Immunity type tests

Phenomenon Standard Class Coupling Value Waveform Source Test In Perf.

Level mode 2 applied Imped. procedure oper. crit. 3

Electrostatic IEC/EN 2 contact discharge 4000 Vp1/50 ns 330 Ω10 positive and yes B

discharge 61000-4-2 (R pin open) 10 negative

to case 3 air discharge 8000 Vpdischarges

(R pin open)

Electromagnetic IEC/EN x 5 antenna 20 V/m 5 AM 80% n.a. 80 to 1000 MHz yes A

field 61000-4-3 3 6 3 V/m 6 1 kHz

ENV 50204 3 antenna 10 V/m PM, 50% duty n.a. 900 MHz yes A

cycle, 200 Hz

repetition frequ.

Electrical fast IEC/EN 3 4 direct +i/–i 2000 Vp 4 bursts of 5/50 ns 50 Ω60 s positive yes A

transients/burst 61000-4-4 5 kHz rep. rate 60 s negative

transients with transients per

15 ms burst coupling mode

duration and a

300 ms period

Surges IEC/EN 2 +i /–i 1000 Vp1.2/50 µs 2 Ω5 pos. and 5 neg. yes B

61000-4-5 3 1 2000 Vp 1 surges

RF conducted IEC/EN 3 +i /–i 10 VAC AM modulated 150 Ω0.15 to 80 MHz yes A

immunity 61000-4-6 2 6 3 VAC 6 80%, 1 kHz

1External components required; see Fig. 6 and table 6.

2i = input, o = output.

3A = normal operation, no deviation from specs., B = temporary deviation from specs. possible.

4Corresponds to the railway standard EN 50121-3-2:2006, table 9.3.

5Corresponds to the railway standard EN 50121-3-2:2006, table 9.1.

6Valid for 24IMS15 and 48IMS15

Electromagnetic Immunity

BCD20008-G Rev AC, 26-Nov-2012 Page 15 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

20IMX15-12-12-8 Peak

PMM 8000 PLUS

Name: 20d12_1

Date: 24.04.06 Time: 16:23

20IMX15D12-con-p

EN 55022 A

dbµV

0.2 0.5 1 2 5 10 20 MHz

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.

Conducted Emissions

Fig. 17a

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

55011/022, measured at Vi nom and Io nom. Output leads 0.1 m,

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

Fig. 17c

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

55011/022, measured at Vi nom and Io nom.

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

(110IMY15-12-12-8)

Fig. 17b

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

55011/022, measured at Vi nom and Io nom. Output leads 0.1 m,

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

Table 11: External capacitors across the input to comply with

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

Model Ceramic ML Electrolytic capacitor

20IMX15, 24IMS15 0.47 µF/50 V 220 µF/50 V

40IMX15, 48IMS15 0.33 µF/100 V 220 µF/100 V

110IMY15 0.15 µF/ 200 V 4.7 µF/200 V

Fig. 18

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

55011/022, measured at Vi nom and Io nom. Output leads 0.1 m,

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

40IMX15-12-12-8-Peak

PMM 8000 PLUS

Name: 40d12_4

Date: 02.05.06 Time: 09:58

EN 55022 B

dbµV

40IMX15D12-F

0.2 0.5 1 2 5 10 20 MHz

40IMX15-12-12-8 Peak

PMM 8000 PLUS

Name: 40d12_1

Date: 24.04.06 Time: 15:2

40IMX15D12-con-p

EN 55022 A

dbµV

0.2 0.5 1 2 5 10 20 MHz

dbµV

110IMY15-12-12-9 Peak

PMM 8000 PLUS

Name: 110d12_1

Date: 25.04.06 Time: 08:07

0.2 0.5 1 2 5 10 20 MH

110IMY15-D12-con-p

EN 55022 A

40IMX15

22 µH

22 nF 47 µF 330 nF

47 µF

Vi+

Vi–

JM126

BCD20008-G Rev AC, 26-Nov-2012 Page 16 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Temperatures

Table 14: Temperature specifications

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

Temperature -9 -8 Unit

Characteristics Conditions min max min max

TAAmbient temperature Operational 1 –40 71 –40 2 3 85 °C

TCCase temperature –40 95 –40 2 3 105

TSStorage temperature Non operational –55 100 – 55 105

1See Thermal Considerations

2Start-up at –55 °C, except -RG models (synchronous rectifier)

3–25 °C for all -RG models (synchronous rectifier)

Immunity to Environmental Conditions

Table 12: Mechanical and climatic stress

Test Method Standard Test Conditions Status

Cab Damp heat IEC/EN 60068-2-78 Temperature: 40 ±2 C Converter

steady state MIL-STD-810D sect. 507.2 Relative humidity: 93 +2/-3 % not

Duration: 56 days operating

Ea 1Shock IEC/EN 60068-2-27 Acceleration amplitude: 50 gn = 490 m/s2Converter

(half-sinusoidal) MIL-STD-810D sect. 516.3 Bump duration: 11 ms operating

Number of bumps: 18 (3 each direction)

Eb Bump IEC/EN 60068-2-29 Acceleration amplitude: 25 gn = 245 m/s2Converter

(half-sinusoidal) MIL-STD-810D sect. 516.3 Bump duration: 1 ms operating

Number of bumps: 6000 (1000 each direction)

Fc Vibration IEC/EN 60068-2-6 Acceleration amplitude: 0.35 mm (10 to 60 Hz) Converter

(sinusoidal) 5 gn = 49 m/s2 (60 to 2000 Hz) operating

Frequency (1 Oct/min): 10 to 2000 Hz

Test duration: 7.5 h (2.5 h each axis)

Fda Random vibration IEC/EN 60068-2-35 Acceleration spectral density: 0.05 gn2/Hz Converter

wide band Frequency band: 20 to 500 Hz operating

reproducibility Acceleration magnitude: 4.9 gn rms

high Test duration: 3 h (1 h each axis)

Kb Salt mist, cyclic IEC/EN 60068-2-52 Concentration: 5% (30 °C) Converter

(sodium chloride Duration: 2 h per cycle not

NaCl solution) Storage: 40 °C, 93% rel. humidity operating

Storage duration: 22 h per cycle

Number of cycles: 3

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

Reliability

Table 13: MTBF

Model Standard Ground Benign Ground Fixed Ground Mobile Unit

TC = 40 °C TC = 40 °C TC = 70 °C TC = 50 °C

20IMX15-12-12-8 MIL-HDBK-217F 697 000 366 000 229 000 312 000 h

20IMX15-15-15-8 Belcore 2 345 000 1 172 000 632 000 317 000

48IMS15-05-05-9 MIL-HDBK-217F 535 000 283 000 179 000 245 000

110IMY15-05-8R MIL-HDBK-217F 485 000 255 000 167 000 223 000

Belcore 1 547 000 774 000 394 000 206 000

BCD20008-G Rev AC, 26-Nov-2012 Page 17 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Mechanical Data

Dimensions in mm (inches)

Fig. 20

Case IMX15, IMS15, IMY15

Material: Fortron 1140L6

Weight: <35 g

Fig. 21

Open frame (option Z)

European

Projection

50.9 (2")

40.8 (1.6")

10.5 ±0.3 (0.41") 45.72 (1.8")

S09011c

47 (1.85")

36.83 (1.45")

Fixing hole for

M2 or KA 22

self-tapping screws

5.08 (0.2")

Measuring point of case temperature T

bottom view

3 x 5.08 (0.2")

2.54 (0.1")

≥5 (0.19")

0.8 (0.03")

for holes with

∅ 1.4 mm

48.3 (1.9")

8.9 ±0.3 (0.35") 45.72 (1.8")

S90011c

38.8 (1.52")

3 x 5.08 (0.2")

6 x 5.08 (0.2")

bottom view

2.54 (0.1")

≥5 (0.19")

0.8 (0.03")

for holes with

∅ 1.4 mm

BCD20008-G Rev AC, 26-Nov-2012 Page 18 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Safety and Installation Instructions

Pin allocation

CSA 60950-1 2nd Edition. 110IMY models are fitted with a CE

mark.

The converters have been evaluated for:

• Building in

• Supplementary insulation input to output, based on their

maximum input voltage (IMX15, IMS15)

• Reinforced insulation input to output, based on their

maximum input voltage (IMY15 models)

• Pollution degree 2 environment (not option Z)

• Connecting the input to a secondary circuit subject to a

maximum transient rating of 1500 V (IMX15, IMS15)

• Connecting the input to a secondary circuit subject to a

maximum transient rating of 2500 V (IMY15)

The converters are subject to manufacturing surveillance in

accordance with the above mentioned UL standards and with

ISO9001:2000.

Railway Applications

To comply with railway standards, all components are coated

with a protective lacquer (except option Z).

Protection Degree and Cleaning Liquids

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

frame models (option Z).

In order to avoid possible damage, any penetration of

cleaning fluids should be prevented, since the power

supplies are not hermetical sealed.

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 agents 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.

Note: Cleaning liquids may damage the adhesive joints of the

ferrite cores.

Isolation

The electric strength test is performed in the factory as routine

test in accordance with EN 50116 and IEC/EN 60950, and

should not be repeated in the field. Power-One will not honor

any warranty claims resulting from electric strength field tests.

Fig. 22

Footprint

1000

Bottom view

Installation Instructions

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.

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.

The converter must be connected to a secondary circuit.

Do not open the converter.

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

circuit) does not result in a hazardous condition.

Input Fuse

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 .

Standards and Approvals

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

Table 15: Pin allocation

Pin Standard and Option Z

single double -0503-

1 Vi+ Vi+ Vi+

2 Vi– Vi– Vi–

3 - Trim n.c.

4SD SD SD

5- - -

6- - -

11 - Vo1+ Vo2+

12 - Vo1– Go

13 Vo+ Vo2+ Vo1+

15 Vo– Vo2– Go

17 R n.c. R

Table 16: Electric strength test voltages

Characteristic Input to output Output to Unit

IMS15 IMX15 IMY15 output

Factory test ≥1 s 1.2 1.513.0 0.1 kVAC

Equivalent DC voltage (1.7) (2.1) (4.2) 0.15 kVDC

Insulation resistance >100 >100 >100 - MΩ

at 500 VDC

Partial discharge Consult Power-One - kV

extinction voltage

11.5 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.

2The test voltage between outputs is not applied as routine test.

BCD20008-G Rev AC, 26-Nov-2012 Page 19 of 19 www.power-one.com

IMX15, IMS15, IMY15 Series Data Sheet

15 -Watt DC-DC Converters

Description of Options

Table 17: Survey of options

Option Function of option Characteristic

-9 Temperature range, NFND See table Temperatures specifications

R R-input and magnetic feedback; NFND as option Magnetic feedback for models without sychr. rectifier

i Inhibit

Z Open frame See Mechanical Data

Option -9 versus -8

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

limited temperature range. Standard models with suffix -8 are

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

Option R

Magnetic feedback from the output for closer regulation of the

output voltage Vo1 of 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.

Furthermore, the output 1 is accurately regulated like the

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

Option i: Inhibit

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

Fig. 23

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.

Vi+

Vi–

06070

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

logic, fail safe).

Voltage on pin i:

Converter operating: –10 V to 0.8 V

Converter inhibited: 2.4 V to Vi max (<75 V) or

pin i left open-circuit:

Option G or -G

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

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