PC1601ARU-AWA-A-Q - POWERTIP TECHNOLOGY

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 1 of 15

Description

The IMX35 Series of board-mountable, 35 Watt DC-DC

converters has been designed according to the latest industry

requirements and standards. The converters are particularly

suitable for use in mobile or stationary applications in

transport, railways, industry, or telecommunication, where

variable input voltages or high transient voltages are

prevalent.

Covering a total input voltage range from 9 V up to 150 V with

4 different models, the converters are available with up to four

electrically isolated outputs from 5 V to 60 V, externally

adjustable and with flexible load distribution. A shutdown input

allows remote converter on/off. Features include consistently

high efficiency over the entire input voltage range, high

reliability, and excellent dynamic response to load and line

changes.

The converters are designed and built according to the

international safety standards IEC/EN/UL 60950, and

approved by TÜV and CSA. The converters provide basic

insulation.

The circuit is comprised of 2 planar magnetics devices, and all

components are automatically assembled and securly

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 considerations of possible thermal stresses ensure

the absence of hot spots providing long life in environments,

where temperature cycles are present. The thermal design

without using any potting material allows operation at full load

up to an ambient temperature of 71 °C in free air and operation

up to 105 °C with airflow. For extremely high vibration

environments the case has holes for screw mounting.

Features

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

products are available.

• Extremely wide input voltage ranges up to 150 VDC

• 4 outputs up to 60 V

• 1200 to 1800 VAC i/o electric strength test

• Electrical isolation between outputs

• Programmable input undervoltage lockout

• Shutdown/inhibit input

• Adjustable output voltages with flexible load distribution

• Frequency synchronization

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

• Operating ambient temperature from –40 to 85 °C

• Thermal protection

• Low profile: 10.5 mm or 8.9 mm with open frame

• Basic insulation

• Flexible output possibilities between 5 V and 60 V

Table of Contents Page Page

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

60950-1 2nd Ed.

72.8

2.87"

47.8

1.88"

8.9

0.35"

76.2

63.5

2.5"

10.5

0.41"

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

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

Functional Description ........................................................... 3

Electrical Input Data ............................................................... 4

Electrical Output Data ............................................................ 6

Auxiliary Functions ................................................................. 9

Electromagnetic Compatibility (EMC) .................................. 11

Immunity to Environmental Conditions ................................ 12

Mechanical Data .................................................................. 13

Safety and Installation Instructions ...................................... 14

Options ................................................................................. 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 2 of 15

Model Selection

Table 1: Model Selection

Output 1 Output 2 Output 3 Output 4 Input voltage Efficiency 1Model Opt.

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

ηη

ηmin ηη

ηη

ηtyp

[V] [A] [V] [A] [V] [A] [V] [A] [V] [%] [%]

5 1.35 5 1.35 5 1.35 5 1.35 9 to 36 82.5 86 20IMX35D05D05-8 i

5 1.4 5 1.4 5 1.4 5 1.4 18 to 75 82 87 40IMX35D05D05-8 Z

5 1.4 5 1.4 5 1.4 5 1.4 40 to 121 83 86 70IMX35D05D05-8 G

5 1.4 5 1.4 5 1.4 5 1.4 60 to 150

282 86 110IMX35D05D05-8

12 0.65 12 0.65 12 0.65 12 0.65 9 to 36 83.7 86 20IMX35D12D12-8

12 0.7 12 0.7 12 0.7 12 0.7 18 to 75 83.7 88 40IMX35D12D12-8

12 0.7 12 0.7 12 0.7 12 0.7 40 to 121 85 88 70IMX35D12D12-8

12 0.7 12 0.7 12 0.7 12 0.7 60 to 150

284 88 110IMX35D12D12-8

15 0.55 15 0.55 15 0.55 15 0.55 9 to 36 85 88 20IMX35D15D15-8

15 0.6 15 0.6 15 0.6 15 0.6 18 to 75 83.6 89 40IMX35D15D15-8

15 0.6 15 0.6 15 0.6 15 0.6 40 to 121 84.5 88 70IMX35D15D15-8

15 0.6 15 0.6 15 0.6 15 0.6 60 to 150

283 88 110IMX35D15D15-8

5 1.35 12 0.65 12 0.65 5 1.35 9 to 36 84 88 20IMX35D05D12-8

5 1.4 12 0.7 12 0.7 5 1.4 18 to 75 84 89 40IMX35D05D12-8

5 1.4 12 0.7 12 0.7 5 1.4 40 to 121 84 88 70IMX35D05D12-8

5 1.4 12 0.7 12 0.7 5 1.4 60 to 150

283.6 88 110IMX35D05D12-8

5 1.35 15 0.55 15 0.55 5 1.35 9 to 36 83.5 88 20IMX35D05D15-8

5 1.4 15 0.6 15 0.6 5 1.4 18 to 75 83.5 89 40IMX35D05D15-8

5 1.4 15 0.6 15 0.6 5 1.4 40 to 121 84 88 70IMX35D05D15-8

5 1.4 15 0.6 15 0.6 5 1.4 60 to 150

284 88 110IMX35D05D15-8

1Efficiency at TA = 25 °C, Vo nom, Io nom

2154 V for 2 s.

Part Number Description

Preferred for new designs

Input voltage range Vi

9 to 36 VDC ........................................... 20

18 to 75 VDC ........................................... 40

40 to 121 VDC ........................................... 70

60 to 150 VDC ......................................... 110

Series ....................................................................... IMX35

Outputs 1 and 4 (1st power train)............... D05, D12, D15

Outputs 2 and 3 (2nd power train) .............. D05, D12, D15

Operating ambient temperature range

TA = – 40 to 85 °C ...................................... - 8

Options: Inhibit ........................................................... -i

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

RoHS compliant for all six substances ........ G1

1G is always placed at the end of the part number.

40 IMX35 D05 D05 -8 i Z G

Product Marking

Converters without option Z are marked with type designation,

input and output voltages and currents, applicable safety

approval and recognition marks, company logo, production

date, and serial no.

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 3 of 15

Functional Description

The IMX35 converters are comprised of 2 feedback-controlled

interleaved-switching flyback power trains using current mode

PWM (pulse width modulation).

Each converter consists of 4 electrically isolated outputs

deriving from 2 power trains. Vo1, Vo4 derive from the first

power train and Vo2, Vo3 from the second one. Thus each pair

of outputs is independent from the other one.

Voltage regulation for each pair of outputs is achieved with

passive transformer feedback from the main transformer of the

power train. Each pair of outputs has the same output voltage

(i.e. D05, D12, etc.). If both power trains have the same output

Fig. 1

Block diagram of quad-output models

voltage (e.g. D12D12), all outputs may be simultaneously

adjusted by the Trim input (pin 5). In case of different output

voltages (e.g. D05D15), the Trim1 input influences only Vo1

and Vo4.

Current limitation is provided by the primary circuit for each

power train and limits the possible output power for each pair

of outputs. In the case of an overload on either of the power

trains, which causes the output voltage to fall less than

typically 60% of V

o nom, the entire converter will shut down and

automatically restart in short intervals (hiccup mode).

The incorporated overtemperature protection shuts down the

converter in excessive overload conditions with automatic

restart.

PWM

Vi+

PUL

Trim/Trim1

Ref

Vi–

Vo4

–

Vo1+

Vo1–

Vo4+

Vo2+

Vo2

–

Vo3+

Vo3

–

03098a

n.c.

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 4 of 15

Electrical Input Data

General conditions:

TA = 25 °C, unless specified

Pins 8 (shutdown or i), 6 (W), 5 (Trim or Trim1), and 1 (PUL) left open-circuit (not connected), unless specified.

Table 2: Input Data

Input 20IMX35 40 IMX35 Unit

Characteristics Conditions min typ max min typ max

ViInput voltage range 1TA min to TA max 9 2 36 18 2 75 VDC

Vi nom Nominal input voltage Io = 0 to Io nom 20 40

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

tstart-up Converter Switch on Worst case condition at 0.25 0.5 0.25 0.5 s

start-up time 2 S¯¯D high Vi min and full load 0.1 0.1

trise Rise time 3 Vi nom resist load 3 3 ms

Io nom capac. load 6 12 6 12

Ii o No load input current Io = 0, Vi min to Vi max 70 50 mA

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

Iinr p Inrush peak current 4 Vi = Vi nom 89A

CiInput capacitance for surge calculation 2 1.3 µF

–D

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

Converter operating open circuit or 2 to 20 open circuit or 2 to 20

–D

– Shutdown input resistance approx. 10 approx. 10 k Ω

–D

– Input current during shutdown Vi min to Vi max 12 6 mA

fsSwitching frequency Vi min to Vi max, Io = 0 to Io nom 220 240 220 240 kHz

Input 70 IMX35 110 IMX35 Unit

Characteristics Conditions min typ max min typ max

ViInput voltage range 1TA min to TA max 40 2 121 6021505VDC

Vi nom Nominal input voltage Io = 0 to Io nom 70 110

Vi sur Repetitive surge voltage Abs. max input (3 s) 150 170

tstart-up Converter Switch on Worst case condition at 0.25 0.5 0.4 0.7 s

start-up time 2 S¯¯D high Vi min and full load 0.1 0.1

trise Rise time 3 Vi nom resist load 3 3 ms

Io nom capac. load 6 12 6 12

Ii o No load input current Io = 0, Vi min to Vi max 30 20 mA

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

Iinr p Inrush peak current 4 Vi = Vi nom 77A

CiInput capacitance for surge calculation 0.5 0.5 µF

–D

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

Converter operating open circuit or 2 to 20 open circuit or 2 to 20

–D

– Shutdown input resistance approx. 10 approx. 10 k Ω

–D

– Input current during shutdown Vi min to Vi max 55mA

fsSwitching frequency Vi min to Vi max, Io = 0 to Io nom 220 240 220 240 kHz

1Vi min will not be as stated, if Vo is increased above Vo nom by

use of Trim input. If the output voltage is set to a higher value,

Vi min will be proportionately increased.

2Input undervoltage lockout at typ. 85% of Vi min.

3Measured with resistive and max. admissible capacitive load.

4Source impedance according to ETS 300132-2, version 4.3.

5154 V during 2 s

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 5 of 15

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.

Table 3: Recommended external fuses in the non-earthed

input line

Converter model Fuse type

20IMX35 F8.0 A

40IMX35 F4.0A

70IMX35 F2.0A

110IMX35 F1.5A

Inrush Current

The inrush current has been kept as low as possible by

choosing a very small input capacitance. A series resistor may

be installed in the input line in order to further reduce this

current.

Fig. 2

Typical inrush current at Vi nom, Po nom versus time (40IMX35).

Source impedance according to ETS 300132-2 at Vi nom.

Fig. 3

Converter start-up and rise time (see table 2)

Fig. 4

Example for external circuitry to comply with IEC/EN 61000-

4-5; the diode D is only necessary for 20IMX35 models.

For very high energy transients as for example to achieve

IEC/EN 61000-4-5 compliance (as per table Electromagnetic

Immunity) an external inductor and capacitor are required. The

components should have similar characteristics as listed in

table below.

Table 5: Components for external circuitry for IEC/EN

61000-4-5, level 2

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

20IMX35 22 µH /5 A 470 µF /40 V 1.5 k E47A

40IMX35 68 µH / 2.7 A 2 x 100 µF /100 V -

70IMX35 100 µH / 1 A 2 x 82 µF /200 V -

110IMX35 150 µH /0.8 A 2 x 82 µF /200 V -

Input Transient Voltage Protection

A built-in suppressor diode provides effective protection

against input transients, which may be generated for example

by short-circuits across the input lines, where the network

inductance may cause high energy pulses.

Table 4: Built-in transient voltage suppressor

Model Breakdown Peak power Peak pulse

voltage at 1 ms current

VBr nom [V] Pp [

ΩΩ

Ω]Ipp [A]

20IMX35 39 1500 22

40IMX35 100 1500 9.7

70IMX35 151 600 2.9

110IMX35 176 600 2.5

04022b

020 40 60 80 100 µs

o nom

startup

rise

04008b

Vi+

Vi–

04036a

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 6 of 15

Electrical Output Data

General conditions:

– TA = 25 °C, unless TC is specified

– Pins 8 (shutdown or i), 6 (W), 5 (Trim or Trim1), and 1 (PUL) left open-circuit (not connected), unless specified.

Table 6: Output data per double-output power train (Vo1/Vo4 or Vo2/Vo3; each power train has 2 outputs)

Output 2 x 5 V 2 x 12 V 2 x 15 V Unit

Characteristics Conditions min typ max min typ max min typ max

Vo1 Output voltage Vi nom 4.95 5.05 11.88 12.12 14.85 15.15 VDC

Vo2 Io = 0.5 Io nom 4.94 5.06 11.86 12.14 14.82 15.18

Io nom Output current 20IMX Vi min to Vi max 2 × 1.35 2 × 0.65 2 × 0.55 A

40IMX 2 × 1.4 2 × 0.70 2 × 0.60

70IMX 2 × 1.4 2 × 0.70 2 × 0.60

110IMX 2 × 1.4 2 × 0.70 2 × 0.60

IoL Current limit 120IMX Vi nom, TC = 25 °C 3.5 1.8 1.5

40IMX Vo = 93% Vo nom 3.8 2.0 1.7

70IMX 3.8 2.0 1.7

110IMX 3.8 2.0 1.7

∆VoLine regulation Vi min to Vi max, Io nom ±1 ±1 ±1 %

∆Vo l Load regulation Vi nom ±3 ±3 ±3

Io = (0.1 to 1) Io nom

Vo1/2 Output voltage noise Vi min to Vi max 280 120 150 mVpp

Io = Io nom 340 60 70

Vo L Output overvoltage limit. 4 Min. load 1% 115 130 115 130 115 130 %

Co ext Admissible capacitive load produced after 2011 0 6000 0 680 0 470 µF

per power train 5

Vo d Dynamic Voltage deviat. Vi nom ±250 ±480 ±520 mV

tdload Recovery time Io nom ↔1/2 Io nom 0.75 0.75 0.75 ms

regulation

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

∆Vo/∆TCIo = (0.1 to 1) Io nom

1Both outputs of each power train connected in parallel. 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 on cool-down).

2BW = 20 MHz, measured with an external capacitor of 1 µF across the output pins.

3Measured with a probe according to EN 61204

4The overvoltage protection is via a primary side second regulation loop, not tracking with Trim control.

5Sum of the capacities on both outputs of each power train

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 7 of 15

Fig. 5

Maximum allowed output power versus ambient

temperature.

Overtemperature Protection

The converter is protected against possible overheating by

means of an internal temperature monitoring circuit. It shuts

down the converter above the internal temperature limit and

attempts to automatically restart. This feature prevents

excessive internal temperature building up which could occur

under heavy overload conditions.

Short Circuit Behavior

The current limit characteristic shuts down the converter

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

protecting and automatically recovers after removal of the

overload condition (hiccup mode).

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 specifi-

cations) and is operated at its nominal input voltage and output

power, the case temperature TC (TC Z with option Z) measured

at the measuring point of case temperature (see Mechanical

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

up phase. 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 the surfaces and properties of the printed

circuit board. TA max is therefore only an indicative value, and

under practical operating conditions, the ambient temperature

TA may be higher or lower than this value.

Caution: The case temperature TC (or TC Z) measured at the

measuring point of case temperature (see Mechanical Data) may

under no circumstances exceed the specified maximum value.

The installer must ensure that under all operating conditions TC (or

TC Z) remains within the limits stated in the table Temperature

specifications.

The converters provide the specified output power with free air

convection cooling. In the upper temperature range the output

power derating below should be observed.

Series and Parallel Connection

The outputs of one or several double-output power trains may

be connected in series respecting the current limitation.

Both outputs of the same power train can always be

connected in parallel in will behave like a single output.

Several outputs of the same converter with equal output

voltage (e.g. 5 V / 5 V) can be connected in parallel and will

share their output currents almost equally.

If outputs of the same converter are being parallel and series-

connected, it is recommended that outputs from the same

power trains are parallel-connected first. This applies for

instance, if 24 V shall be generated by a converter with four

12 V outputs; see fig. 7.

Fig. 6

Overload switch off (hiccup mode), typical values.

Note: Parallel operation of several converters may cause start-

up problems. This becomes noticable in applications, where one

converter is not able to deliver allone the full resistive and

capacitive load current, as it is required in true redundant systems.

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

11047-X35a

0.5 m/s

100 LFM

natural cooling

PWM

Vi+

PUL

Trim

Ref

Vi–

Vo4–

Vo1+

Vo1–

Vo4+

Vo2+

Vo2–

Vo3+

Vo3–

JM138

n.c.

19 n.c.

–24V

+24V

IMX35D12D12-9

Fig. 7

Generating 24 V with an IMX35D12D12-9

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 8 of 15

Fig. 9

Cross load regulation (typ.) on power train 1. Vo4 versus Io1

Fig. 10

Flexible load distribution (typ.) on power train 1 of a

40IMX35D12D12-8:

Vo1 versus Io1, Io4 = 0.5 Io4 nom

Fig. 8

Vo versus Io (typ.) of double-output power trains, with both

outputs in parallel (e.g., Vo1/4 of a 40IMX35D12D12)

Typical Performance Curves

General conditions:

– TA = 25°C, unless TC is specified.

– Shut down and Trim pin left open-circuit.

[V]

0.5 1 1.5 2 A

o total

05020-X35

Vo1, Vo4 [V]

Io1/Io1 nom

05039b

10 0 0.25 0.5 0.75 11.5

1.25

Vo1

Vo4

11.5

12.5

13.5

[V]

0.06 0.2 0.3 0.4 0.5 0.6 0.7 A

05164b

= 0.35 A

= 0.035 A

Fig. 12

Efficiency versus input voltage and load. Typical values

(40IMX35D12D12-8)

η [%]

50 75 100 %

Po tota

05152a

Vi min Vi nom

Fig. 11

Efficiency versus input voltage and load. Typical values

(20IMX35D12D12-8)

η [%]

50 75 100 %

o total

05153a

i min

i nom

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 9 of 15

Table 7: Rext for Vo > Vo nom;

approximate values (Vi nom, Io = 0.5 Io nom)

Vo [% Vo nom]Rext [kΩΩ

ΩΩ

Ω]

Trim Trim1

105 to 108 (107 typically) 0 0

105 10 17

102 62 110

100 ∞∞

Auxiliary Functions

Adjustable Output Voltage

As a standard feature, the IMX35 offer adjustable output

voltages in the range of 85 to 105% of Vo nom. Fig. 12 shows the

schematic diagram for the adjustment of quad-output models.

All models with equal output voltages have a Trim input at pin

5 referenced to the primary side, influencing all outputs simul-

taneously. Models with different output voltages exhibit a

Trim1 input, influencing only the first power train (Vo1 and Vo4).

Adjustment by means of an external resistor Rext:

Fig. 13

Output voltage control by means of the Trim input

Table 8: Vo versus Vext for Vo = 85 to 105% Vo nom;

typical values (Vi nom, Io = 0.5 Io nom)

Vo [% Vo nom]Vext [V]

Trim [V] Trim1 [V]

>105 0 0

102 1.8 1.5

100 2.5 2.5

95 4.3 4.25

90 6.2 6.2

85 8 8

Synchronization (W)

It is possible to synchronize the switching frequency of one or

more converters to an external clock signal.

This logic input W can be used to synchronize the oscillator to

an external frequency source. This signal is edge-triggered

with TTL thresholds and requires a source frequency of 490 to

540 kHz (duty cycle 10 to 90%). The external source frequency

is internally divided by 2 to define the switching frequency of

the converter. If unused, this pin can be connected to V1– (pin

2) or left open-circuit.

Reference Output (Ref)

The converter provides a stable 5 V (±0.1 V) reference signal

on pin 7 (Ref). The output is protected by a 1 kΩ resistor. The

signal may be used also in conjunction with the Trim input (pin

5) as a limited external voltage reference.

It is recommended to connect a filter capacitor (0.1 µF)

between Ref and Vi–, if Ref is used.

Shutdown

The outputs of the converters may be enabled or disabled by

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

down (pin 8). If the shutdown function is not required, pin 8

should be left open-circuit:

Converter operating: 2.0 to 20 V

Converter disabled: –10 to 0.7 V

Adjustment of the output voltage by means of an external

resistor Rext is possible within the range of 100 to 105% of

Vo nom. Rext should be connected between Trim (pin 5) and Vi–

(pin 2). The following table indicates suitable resistor values for

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

0.5 Io nom).

Note: Connection of Rext to Vi+ may damage the converter.

Adjustment by means of an external voltage source Vext

For external output voltage adjustment in the range 85 to

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

connected to Trim or Trim1 (pin 5) and Vi–. The table below

indicates typical values Vo versus Vext. Applying a control

voltage of 15 to 20 V will set the converter into the hiccup

mode. Direct paralleling of the Trim pins of converters of the

same type connected in parallel is feasible.

Trim

Vo1+

Vo2–

Vext

–

Vi+

Vi–

Rext

Vo1–

Vo2+

06137c

Control

circuit

ref

= 2.5 V

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 10 of 15

Progr. Input Undervoltage Lockout PUL

A special feature of the converters (with Rev. BA or later) is the

adjustable undervoltage lockout protection, which protects

the converter (and the system) from high current caused by

operation at low input voltages. This ensures easier start-up

in distributed power systems.

The table below shows the band of switch on/off and the

hysteresis.

The undervoltage lockout levels may be programmed by using

an external resistor RPUL between PUL and Vi– to increase the

preset levels as specified in table 10.

Table 10: Typical values for RPUL and the respective lockout

voltage for input voltage.

20IMX35 40 IMX35

RPUL [kW] Vi min [V] RPUL [kW] Vi min [V]

∞≤8∞≤15.5

39 10 43 22

19 12 16 26

13 14 10 28

9.1 16 0 32

70IMX35 110 IMX35

RPUL [kW] Vi min [V] RPUL [kW] Vi min [V]

∞31 ∞42

270 40 270 50

110 50 120 60

80 55 51 75

Table 9: Trigger level and hysteresis (pin 1 left open)

Model Trigger level Hysteresis Unit

20IMX35 7 to 8 <0.5 V

40IMX35 14 to 15.5 <1

70IMX35 31 to 34 <3

110IMX35 42 to 50 <8

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 11 of 15

Electromagnetic Immunity

Table 11: Immunity type tests

Phenomenon Standard Class Coupling Value Waveform Source Test In Perf-

Level mode 1 applied imped. procedure oper. crit.2

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

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

to case 3 air discharge 8000 Vpdischarges

(Trim pin open)

Electromagnetic IEC/EN 3 3 antenna 10 V/m AM 80% n.a. 80 to 1000 MHz yes A

field 61000-4-3 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 4 direct +i/–i ±4000 Vpbursts of 5/50 ns 50 Ω60 s positive, yes B

transients/burst 61000-4-4 2.5/5 kHz 60 s negative

over 15 ms, transients per

burst period coupling mode

300 ms

Surges IEC/EN 3 4 +i/– i ±2000 Vp1.2/50 µs 2 Ω5 pos. and 5 neg. yes B

61000-4-5 surges

EN 50155: A 5 +i/c, –i/c ±1800 Vp5/50 µs 100 Ωyes B

2001 B 6 +i/c, –i/c 8400 Vp0.05/ 0.1 µs 100 Ωyes B

RF Conducted IEC/EN 3 +i/ – i 10 VAC AM modulated 50 Ω0.15 to 80 MHz yes A

immunity 61000-4-6 (140 dBµV) 80%, 1 kHz 150 Ω

1i = input, o = output, c = case (not with option Z)

2A = normal operation, no deviation from specification, B = temporary deviation from specs. possible.

3Corresponds to EN 50121-3-2:2000, table 9.1

4External components required; see fig. 4

5Corresponds to EN 50155:1995, waveform D

6Corresponds to EN 50155:1995, waveform G

effective protection against high input transient voltages which

typically occur in many installations, but especially in battery-

driven mobile applications.

Electromagnetic Compatibility (EMC)

A suppressor diode together with an input filter form an

Fig. 14

Typ. disturbances (quasi-peak and average) at the input

according to EN 55011/ 22, measured at Vi nom and Io nom

(110IMX35D05D12-8 with input choke 2

1.1 mH).

Electromagnetic Emissions

PMM 8000 PLUS: Peak, conducted Vi+, QP + AV, 2006-10-01, 2x 1.1 mH,

110IMX35D05D12, Ui=110 V, Uo1=Uo4=5 V, Io1=Uo4=1.4 A, Uo2=Uo3=12 V Io2=Uo3=0.6 A

dBµV

0.2 0.5 1 2 5 10 20 MHz

JM072

EN 55022 A QP

EN 55022 A AV

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 12 of 15

Fig. 15

External filter circuitry

Table 12: Input filter components

Model Common mode choke Ceramic cap

L1 (Murata) C1

20IMX35 70 µH / 3.6 A, PLH10AN7003R6P2 4.7 µF / 50 V

40IMX35 160 µH / 2.1 A, PLH10AN1612R1P2 2.2 µF / 100 V

70IMX35 290 µH / 1.2 A, PLH10AN2911R2P2 1 µF / 200 V

110IMX35 370 µH / 1.0 A, PLH10AN3711R0P2 1 µF / 200 V

Conducted emission according to EN 55011/55022, class A,

can be achieved by adding an external common mode choke

and an additional ceramic capacitor. The filter components

should be placed as close as possible to the input of the

converter; see figure 15.

Immunity to Environmental Conditions

Table 13: 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 section 507.2 Relative humidity: 93 +2/-3 % not

Duration: 56 days operating

-- Salt mist test EN 50155:2007 Temperature: 35 ±2 °C Converter

sodium chloride sect. 12.2.10 Duration: 48 h not

(NaCl) solution 2class ST3 2operating

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

(half-sinusoidal) MIL-STD-810D section 516.3 Bump duration: 6 ms operating

Number of bumps: 6000 (1000 in each direction)

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

(sinusoidal) MIL-STD-810D section 514.3 5 gn = 49 m/s2 (60 - 2000 Hz) operating

Frequency (1 Oct/min): 10 – 2000 Hz

Test duration: 7.5 h (2.5 h in each axis)

Fh Random vibration IEC/EN 60068-2-64 Acceleration spectral density: 0.05 gn2/Hz Converter

broad-band Frequency band: 8 – 500 Hz operating

(digital control) and Acceleration magnitude: 4.9 g rms

guidance Test duration: 1.5 h (0.5 h in each axis)

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

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

Number of bumps: 18 (3 in each direction)

-- Shock EN 50155:2007 sect. 12.2.11 Acceleration amplitude: 5.1 gnConverter

EN 61373 sect. 10, class B, Bump duration: 30 ms operating

body mounted1Number of bumps: 18 (3 in each direction)

-- Simulated long life EN 50155:2007 sect. 12.2.11 Acceleration spectral density: 0.02 gn2/Hz Converter

testing at EN 61373 sect. 8 and 9, Frequency band: 5 – 150 Hz operating

increased random Body mounted 1Acceleration magnitude: 0.8 gn

rms

vibration levels Test duration: 15 h (5 h in each axis)

1Body mounted = chassis of a railway coach

2Models without option Z

Vi+

Vi–

–

Converter

07114c

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 13 of 15

63.5

76.2

63.5

0.8 x 0.8

5.08

5 ±0.3 10.5 ±0.3

09121c

69.6

56.9

thread M3

Bottom

view

4 threads M3

Mechanical Data

Dimensions in mm.

Fig. 16

Case IMX35 (Standard)

Material: Zinc; weight: approx. 67 g

Fig. 17

Case IMX35 open frame (option Z)

Weight: approx. 43 g

Temperatures

Reliability

Table 15: MTBF at nom. load

Model Ground benign Ground fixed Ground mobile Device hours1Unit

40 °C 40 °C 70 °C 50 °C

40IMX35 (MIL-HDBK-217F, TC) 336 000 141 000 86 000 110 000 396 000 h

110IMX35 (Bellcore, TA) 1445 000 529 000 294 000 144 000

1The device hours are based upon the IMX35 series field failure rate recorded between 2000 and 2005

European

Projection

Table 14: Temperature specifications, valid for air pressure of 800 to 1200 hPa (800 to 1200 mbar)

Temperature -8 Unit

Characteristics Conditions min max

TAAmbient temperature Operational 1 –40 3 85 1°C

TCCase temperature (without opt. Z)

2–40 3105 2

TC Z Component temp. with opt. Z 2–40 3110 2

TSStorage temperature Non operational – 55 105

1See Thermal Considerations

2Temperature measurment point; see Mechanical Data

3Start-up at – 55 °C

5.08

47.8

63.5

72.8

.4 ±0.3 8.9 ±0.2

0.8 x 0.8

09123c

C Z

Cores

C Z

Bottom

view

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 14 of 15

Table 16: Pin allocation

Pin No. Quadruple

output

1 PUL

2 Vi–

3 n.c.

4 Vi+

5 Trim or Trim1

7 Ref

8 SD or i

11 Vo3–

12 Vo3+

13 Vo2+

14 Vo2–

15 Vo1–

16 Vo1+

17 Vo4+

18 Vo4–

19 n.c.

Safety and Installation Instructions

Pin allocation

Fig. 18

Footprint. The holes in the PCB should have a diameter of

1.5 mm.

Installation Instructions

Installation of the converters 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 1.5 mm for the pins.

The converters should 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

line in case of a short-circuit in the converter, an external fuse

should be installed in the non-earthed input line. We

recommend a fast acting fuse specified in table 3.

Standards and Approvals

All converters are safety-approved to IEC/EN 60950-1 and

UL/CSA 60950-1 2nd Ed.

The converters have been evaluated for:

• Building-in

• Basic insulation input to output, based on their maximum

input voltage

• Pollution degree 2 (not option Z)

• Connecting the input to a secondary circuit, which is

subject to a maximum transient rating of 1500 V.

The converters are subject to manufacturing surveillance in

accordance with the above mentioned standards.

CB scheme is available.

Railway Applications

To comply with Railway standards, all components are coated

with a protective lacquer (except for option Z).

Protection Degree

The protection degree is IP 30 (not for option Z).

Cleaning Liquids

In order to avoid possible damage, any penetration of cleaning

fluids should be prevented, since the converters are not

hermetically 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 liquids are

not permitted – except washing at room temperature with

isopropyl alcohol and de-inonized/destilled water (1 : 1) .

Note: Cleaning liquids may damage the adhesive joints of the

ferrite cores.

09122a

Bottom

view

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

BCD20009-G Rev AC, 06-May-2013 Page 15 of 15

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.

Isolation

The electric strength test is performed in the factory as a

routine test in accordance with EN 50116, EN 60950, and UL

Table 17: Electric strength test voltages

Characteristic Input to Input to Outputs to Between Unit

(outputs+case) (outputs+case) case outputs

20/40IMX35 170/110IMX35 1all models 1all models

Factory test >1 s 1.2 1.8 0.5 0.15

2kVAC

Equivalent DC voltage 1.5 2.5 0.7 0.2

2kVDC

Insulation resistance >100 >100 – – MΩ

at 500 VDC

1For open-frame models (option Z), only the insulation input to outputs is tested.

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

60950 and should not be repeated in the field. Power-One will

not honor any warranty claims resulting from electric strength

field tests.

Fig. 19

If the inhibit pin is not used, connect it to Vi–.

Vi+

Vi–

06138a

Options

i: Inhibit (Negative Shutdown Logic)

The outputs of the converter may be enabled or disabled by

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

pin 8. If the inhibit function is not required the inhibit (pin 8)

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

logic, fail safe).

Voltage at pin 8:

Converter operating: –10 V to 0.8 V

Converter disabled: 2.4 V to 20 V or left

open-circuit

Z: Open Frame

For applications, where the protection by a housing is not

necessary or in the case that the motherboard should be

lacquered after fitting the converter.

Note: The converters shall not be exposed to cleaning processes,

as this will damage the glue of the ferrite cores.

G: RoHS-6

Converters with a type designation ending by G are RoHS-

compliant for all six substances.