20IMX35D05D05-9I--Datasheet/数据表在线中文翻译

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Product Specifications

Aug 2002

Wide input voltage ranges up to 150 V DC

2...4 outputs up to 60 V DC

1500 V DC I/O electric strength test voltage

• Extremely wide input voltage ranges

• Electrical isolation I/O, also between outputs

• Emissions below EN 55022, level B

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

• Programmable input undervoltage lock-out

• Shut down/inhibit input

8.9

0.35"

47.8

1.88"

72.8

2.87"

• Output voltages adjustable with flexible load

distribution

• Frequency synchronisation

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

• Operating ambient temperature from –40...110^°C

• Thermal protection

• 3" x 2.5" case with 10.5 mm profile or 8.9 mm open

frame

• Basic insulation

• Flexible output possibilities between 3.3 V & 60 V

10.5

0.41"

63.5

2.5"

Safety according to IEC/EN 60950, UL 1950

76.2

3"

LGA

Approvals pending

Summary

The circuit comprises of two planar magnetics devices and

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 condi-

tions. Careful considerations of possible thermal stresses

ensure the absence of hot spots providing long life in envi-

ronments where temperature cycles are a reality. The ther-

mal design without using any potting material allows opera-

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

free air, operation to 110°C with airflow. For extremely high

vibration environments the case has holes for screw

mounting. Inhibit or open frame mounting provide a high

level of application specific engineering and design-in flex-

ibility.

The IMX 35 series of board mountable 35 Watt DC-DC con-

verters has been designed according to industry require-

ments and standards. The converters are particularly suit-

able for use in mobile or stationary applications in trans-

port, railways, industry, or telecommunication where vari-

able input voltages or high transient voltages are prevalent.

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

with 4 different types. The units are available with up to

quadruple outputs (electrically isolated) from 3.3 V up to

60V externally adjustable and with flexible load distribution.

A shut down input allows remote converter on/off. Features

include consistently high efficiency over the entire input

voltage range, high reliability and excellent dynamic re-

sponse to load and line changes.

The converters are designed and built according to the in-

ternational safety standards IEC/EN 60950, UL 1950, CAN/

CSA C22.2 No.950-95. LGA, UL and cUL approvals are in

progress. The IMX 35 types provide basic insulation.

Table of Contents

Page

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

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

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

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

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

Description of Option ..................................................... 15

Summary .......................................................................... 1

Type Survey and Key Data .............................................. 2

Type Key .......................................................................... 2

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

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

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

AUG 13, 2002

Rev 1.0

www.power-one.com

Page 1 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Product Specifications

Aug 2002

Type Survey and Key Data

Table 1: Type survey

Output 1

Output 2

Output 3

Output 4

Input voltage Eff.

Type

Trim¹Opt.²

V_{o nom}I_{o nom}V_{o nom}

I_{o nom}V_{o nom}I_{o nom}V_{o nom}I_{o nom}

V_{i min}...V_{i max}

η_typ

designation

[V DC]

[A]

[V DC]

[A]

[V DC]

[A]

[V DC]

[A]

[V DC]

[%]

3.3

4.15

5

12

15

1.35

0.7

0.6

5

12

15

1.35

0.7

0.6

-

18...75

81

83

84

40 IMX 35-03D05-9

40 IMX 35-03D12-9 second.

40 IMX 35-03D15-9

-8

i

Z

5.1

3.25

5

12

15

1.4

0.7

0.6

5

12

15

1.4

0.7

0.6

-

18...75

82

83

84

40 IMX 35-05D05-9

40 IMX 35-05D12-9 second.

40 IMX 35-05D15-9

-8

i

Z

5

1.35

1.4

5

1.35

1.4

5

1.35

1.4

5

1.35

1.4

9...36

18...75

40...121

60...150

86

87

86

20 IMX 35 D05D05-9

40 IMX 35 D05D05-9 primary

70 IMX 35 D05D05-8

-8

i,Z

i

1.4

86 110 IMX 35 D05D05-8

Z

12

0.65

0.7

12

0.65

0.7

12

0.65

0.7

12

0.65

0.7

9...36

18...75

40...121

60...150

86

88

20 IMX 35 D12D12-9

40 IMX 35 D12D12-9 primary

70 IMX 35 D12D12-8

-8

i,Z

i

88 110 IMX 35 D12D12-8

Z

15

0.55

0.6

15

0.55

0.6

15

0.55

0.6

15

0.55

0.6

9...36

18...75

40...121

60...150

88

89

88

20 IMX 35 D15D15-9

40 IMX 35 D15D15-9 primary

70 IMX 35 D15D15-8

-8

i,Z

i

88 110 IMX 35 D15D15-8

Z

5

1.35

1.4

12

0.65

0.7

12

0.65

0.7

5

1.35

1.4

9...36

18...75

40...121

60...150

88

89

88

20 IMX 35 D05D12-9

40 IMX 35 D05D12-9 primary

70 IMX 35 D05D12-8

-8

i,Z

i

1.4

0.7

1.4

88 110 IMX 35 D05D12-8

Z

5

1.35

1.4

15

0.55

0.6

15

0.55

0.6

5

1.35

1.4

9...36

18...75

40...121

60...150

88

89

88

20 IMX 35 D05D15-9

40 IMX 35 D05D15-9 primary

70 IMX 35 D05D15-8

-8

i,Z

i

1.4

0.6

1.4

88 110 IMX 35 D05D15-8

Z

¹The Trim input (pin 5) on the primary side influences all outputs simultaneously on equal voltage types (eg D12D12) for unequal voltages (eg D05D12) it

only influences the power train Vo1/Vo4, while Trim1 (pin 18) on the secondary side influences the first output (V_o1) only.

²For minimum quantity contact Power-One, not all options immediately available.

TYPE KEY

20 IMX 35 D05 D05 -9 i Z

Input voltage range U_i

9...36 V DC ........................................... 20

18...75 V DC ........................................... 40

40..121V DC ........................................... 70

60..150V DC ......................................... 110

Series ...................................................................... IMX 35

Output 1 of triple types ...........................................-03, -05

Output 1 & 4 of quad types^{1 .................................}D05, D12, D15

Output 2 & 3 of quad types^{1 .................................}D05, D12, D15

Operating ambient temperature range T_A

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

–40...85°C (110°C ) .................................... -8

Options:

Inhibit ........................................................... -i

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

¹Dual output models can be achieved by paralleling outputs

AUG 13, 2002

Rev 1.0

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Page 2 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Product Specifications

Aug 2002

Functional Description

The quadruple output type consists of 4 outputs and two

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 each power train.

Each pair of outputs are restricted to being of the same out-

put voltage type (i.e. D05, D12, etc.). If both power trains

have the same output voltage, all outputs may be adjusted

by means of the Trim input. (In case of different output volt-

ages, the Trim1 input influences only Vo1 and Vo4. See:

Block diagram, quadruple output types.)

The IMX35 family of DC-DC converters consists of two

feedback controlled interleaved switching flyback power

trains using current mode PWM (pulse width modulation).

Functionally the converters are of two main types.

The triple output types consist of 3 outputs Vo1, Vo2, Vo3.

Vo1 (3.3 V or 5.1 V) is generated by a power train using

synchronous rectifier technology thus enabling high effi-

ciency. Also there is active magnetic feedback on this out-

put via a pulse transformer which results in very tight and

reliable regulation of the output voltage. The other two out-

puts Vo2 and Vo3 are electrically isolated double outputs.

Vo2, Vo3 are restricted to being of the same output voltage

(i.e. D05, D12, etc.). Voltage regulation is achieved with a

passive transformer feedback from the main transformer

of that power train.

The dual output types consist of two electrically isolated

outputs Vo1, Vo2. Vo1 and Vo2 derives from two power

trains and are electrically isolated. Voltage regulation for

each output is achieved with passive transformer feedback

from the main transformer of each power train. Adjustment

of the outputs voltages in the range of 90...105% of V_{o nom}is

possible via Trim input on the primary side.

Adjustment of the output 1 (V_o1) is provided by the Trim1

pin referenced to the secondary side and allows for pro-

gramming of the voltage of output 1 in the range of approx.

90...105% of V_{o nom}. (See: Block diagram, triple output

types)

03097a

03098

4

Vi+

17 Vo1+

Vi+

4

16

Vo1+

1

5

6

7

8

2

3

PUL

n.c.

W

16

15

n.c.

1

5

6

7

8

2

3

PUL

Trim

Control

15

Vo1—

Trim1

PWM

17 Vo4+

18 Vo4—

13 Vo2+

PWM

W

Ref

18

13

SD

Vi—

n.c.

SD

Vi—

n.c.

Vo2+

14

12

Vo2—

Vo3+

14

12

Vo2—

Vo3+

11

19

Vo3—

n.c.

11 Vo3—

19 n.c.

Fig. 2

Block diagram, quadruple output types

Fig. 1

Block diagram, triple output types

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.

Overtemperature protection is provided, this will shut down

the converter in excessive overload conditions with auto-

matic restart approximately in short intervals.

AUG 13, 2002

Rev 1.0

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Page 3 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Electrical Input Data

Product Specifications

Aug 2002

General conditions:

T_A= 25°C, unless T_Cis specified; Shut down pin left open circuit (not connected);Trim not connected.

Table 2: Input Data

Input

20 IMX

40 IMX

Characteristics

Conditions

min

9 ²

typ

max

36

min

18 ²

typ

max

75

Unit

V_i

Input voltage range ¹

T_Amin...T_Amax

I_o= 0...I_{o nom}

V DC

V_{i nom}

V_{i sur}

t_{start up}

Nominal input voltage

20

40

Repetitive surge voltage

Abs. max input (3 s)

40

0.5

0.1

100

0.5

0.1

Converter

start-up time ²

Switch on

SD high

Worst case condition at

U_{i min}and full load

0.25

s

t_rise

Rise time ³

U_{i nom}resist load

I_{o nom}capac. load

I_o= 0, U_{i min}...U_{i max}

I_o= 0...I_{o nom}

3

6

3

6

ms

mA

12

70

30

8

12

50

30

9

I_{i o}

No load input current

Reflected ripple current

Inrush peak current ⁴

Input capacitance

I_irr

I_{inr p}

C_i

U_i= U_{i nom}

A

for surge calculation

Unit shut down

Unit operating

2

1.3

µF

U_SD

Shut down voltage

–10...0.7

V DC

open circuit or 2...20

R_SD

I_SD

Shut down input resistance For current calculations

approx. 10

12

approx. 10

6

kΩ

Input current if unit

shut down

U_{i min}...U_{i max}

mA

f_s

Switching frequency

U_{i min}...U_{i max}, I_o= 0...I_{o nom}

approx. 220

B ⁶

approx. 220

B⁶

kHz

u_{i RFI}

Input RFI level, conducted

EN 55022 ⁵

Input

70 IMX

110 IMX

Characteristics

Conditions

min

40 ²

typ

max

121

min

60²

typ

110

0.25

max

150

Unit

V_i

Input voltage range ¹

T_Amin...T_Amax

I_o= 0...I_{o nom}

V DC

V_{i nom}

V_{i sur}

t_{start up}

Nominal input voltage

70

Repetitive surge voltage

Abs. max input (3 s)

150

0.5

0.1

170

0.5

0.1

Converter

start-up time ²

Switch on

SD high

Worst case condition at

U_{i min}and full load

0.25

s

t_rise

Rise time ³

U_{i nom}resist load

I_{o nom}capac. load

I_o= 0, U_{i min}...U_{i max}

I_o= 0...I_{o nom}

3

6

3

6

ms

mA

12

30

7

12

20

30

7

I_{i o}

No load input current

Reflected ripple current

Inrush peak current ⁴

Input capacitance

I_irr

I_{inr p}

C_i

U_i= U_{i nom}

A

for surge calculation

Unit shut down

Unit operating

0.5

µF

U_SD

Shut down voltage

–10...0.7

V DC

open circuit or 2...20

approx. 10

3.5

open circuit or 2...20

R_SD

I_SD

Shut down input resistance For current calculations

approx. 10

4

kΩ

Input current if unit

shut down

U_{i min}...U_{i max}

mA

f_s

Switching frequency

U_{i min}...U_{i max}, I_o= 0...I_{o nom}

approx. 220

B ⁶

approx. 220

B ⁶

kHz

u_{i RFI}

Input RFI level, conducted

EN 55022 ⁵

¹V_{i min}will not be as stated if V_ois increased above V_{o nom}by use of Trim input. If the output voltage is set to a higher value,

_{i min}will be proportionately increased.

²Input undervoltage lock-out at typ. 85% of U_{i min}

V

.

³Measured with resistive and max. admissible capacitive load.

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

⁵Measured with a lead length of 0.1 m, leads twisted.

⁶External capacitor required.

AUG 13, 2002

Rev 1.0

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Page 4 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Product Specifications

Aug 2002

Inrush current

Input Transient Voltage Protection

The inrush current has been kept as low as possible by

choosing a very small input capacitance. A series resistor

may be installed in the input line to further reduce this cur-

rent.

A built-in suppressor diode provides effective protection

against input transients which may be caused for example

by short-circuits accross the input lines where the network

inductance may cause high energy pulses.

04022

I [A]

Table 4: Built-in transient voltage suppressor

Type

Breakdown

voltage

V_{Br nom}[V]

Peak power

at 1 ms

Peak pulse

current

I_pp[A]

4

3

2

P_p[W]

20 IMX 35

40 IMX 35

70 IMX 35

110 IMX 35

39

1500

600

22

9.7

2.9

2.5

100

151

176

1

t [µs]

0

20

50 60 70 80 90 100

10

30 40

600

Fig. 3

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

(40 IMX 35). Source impedance according to

For very high energy transients as for example to achieve

IEC/EN 61000-4-5 or ETR 283 (19 Pfl1) compliance (as per

table: Electromagnetic Immunity) an external inductor and

capacitor are required. The components should have simi-

lar characteristics as listed in table: Components for exter-

nal circuitry for IEC/EN 61000-4-5, level 2 or ETR 283

(19Pfl1) compliance.

prETS 300132-2, version 4.3 at V_{i nom}

.

U_o

t_rise

04008

U_{o nom}

Note: The suppressor diode D is only necessary for

20 IMX 35 types.

t

t_{start up}

Table 5: Components for external circuitry for IEC/EN

61000-4-5, level 2 or ETR 283 (19Pfl1) compliance.

Fig. 4

Converter start-up and rise time

Type

Inductor (L)

22 µH/5A

Capacitor (C)

470 µF/40 V

Diode (D)

20 IMX 35

40 IMX 35

70 IMX 35

1.5 k E47A

Reverse Polarity Protection

68 µH/2.7 A

100 µH/1 A

2 x 100 µF/100 V

2 x 82 µF/200 V

-

The built-in suppressor diode also provides for reverse po-

larity protection at the input by conducting current in the re-

verse direction. An external fuse is required to limit this cur-

rent.

110 IMX 35 150 µH/0.8 A

Table 3: Recommended external fuses

04036

L

Vi+

Converter type

20 IMX 35

Fuse type

F8.0A

+

C

D

40 IMX 35

F4.0A

Vi–

70 IMX 35

F2.0A

110 IMX 35

F1.5A

Fig. 5

Example for external circuitry to comply with IEC/EN

61000-4-5 or ETR 283 (19Pfl1); the diode D is only neces-

sary for 20 IMX 35 types.

AUG 13, 2002

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Page 5 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Electrical Output Data

Product Specifications

Aug 2002

General conditions:

– T_A= 25°C, unless T_Cis specified

– Shutdown pin left open circuit (not connected)

– Trim not connected

Table 6a: Output data for single synchronous rectifier (main) output. [only 40IMX35-03 & 40IMX35-05 triple output units]

Output

3.3 V

5.1 V

Characteristics

Conditions

min typ

max

3.32

min typ max

Unit

V DC

A

U_o

Output voltage

U_{i nom}, I_o= 0.5 I_{o nom}3.28

5.07

5.13

I_{o nom}Output current

4.15

5.5

3.3

4.6

I_o1L

I_o2L

Current limit ¹

U_{i nom}, T_C= 25°C

U_o1= 93% U_{o nom}

∆U_{o U}Line/load regulation

U_{i min}...U_{i max}

I_o= (0.05...1) • I_{o nom}

,

1

%

2

u_o1/2

Output voltage noise

U_{i min}...U_{i max}

I_o= I_{o nom}

70

40

80

40

mV_pp

3

U_{o L}

Output overvoltage limit. ⁴

115

130

3900

250

1

115

130

2700

250

1

%

µF

C_{o ext}Admissible capacitive load

u_{o d}

t_d

Dynamic

load

Voltage deviat. U_{i nom}

mV

ms

1

I_{o nom}× /

2

I_{o nom}

Recovery time

regulation

IEC/EN 61204

α_Uo

Temperature coefficient

∆U_o/∆T_C

U_{i min}...U_{i max}

I_o= 0...I_{o max}

0.02

%/K

Table 6b: Output data for double output power trains. (Vo1/Vo4 or Vo2/Vo3, i.e. each output train has two outputs)

Output

2 x 5 V

2 x 12 V

2 x 15 V

Characteristics

Conditions

min typ max

Unit

U_o1

U_o2

Output voltage

U_{i nom}

I_o= 0.5 I_{o nom}

4.95

4.94

5.05

5.06

11.88

11.86

12.12

12.14

14.85

14.82

15.15 V DC

15.18

I_{o nom}Output current

20 IMX U_{i min}...U_{i max}

40 IMX

2 x 1.35

2 x 1.4

3.5

2 x 0.65

2 x 0.55

2 x 0.60

A

2 x 0.70

1.8

70 IMX

2 x 0.60

1.5

110 IMX

I_oL

Current limit ¹

20 IMX U_{i nom}, T_C= 25°C

U_o= 93% U_{o nom}

40 IMX

3.8

2.0

1.7

70 IMX

3.8

2.0

1.7

110 IMX

3.8

2.0

1.7

∆U_{o U}Line regulation

∆U_{o l}Load regulation

U_{i min}...U_{i max}, I_{o nom}

1

3

1

3

1

3

%

U_{i nom}

I_o= (0.1...1) I_{o nom}

2

u_o1/2

Output voltage noise

U_{i min}...U_{i max}

I_o= I_{o nom}

80

40

120

60

150

70

mV_pp

3

U_{o L}

Output overvoltage limit. ⁴

Min. load 1%

115

130

4000

250

0.75

115

130

470

480

0.75

115

130

330

520

0.75

%

µF

C_{o ext}Admissible capacitive load

u_{o d}

t_d

Dynamic

load

Voltage deviat. U_{i nom}

mV

ms

1

I_{o nom}× /

2

I_{o nom}

Recovery time

regulation

α_Uo

Temperature coefficient

∆U_o/∆T_C

U_{i min}...U_{i max}

I_o= 0...I_{o max}

0.02

%/K

¹The current limit is primary side controlled. In the event of a sustained overload condition the thermal protection may cause the unit to

shutdown (restart on cool-down).

²BW = 20 MHz

³Measured with a probe according to EN 61204

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

AUG 13, 2002

Rev 1.0

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Page 6 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Product Specifications

Aug 2002

Short Circuit Behaviour

Thermal Considerations

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).

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

stationary air (convection cooling) at the indicated maxi-

mum ambient temperature T_{A max}(see table: Temperature

specifications) and is operated at its nominal input voltage

and output power, the case temperature T_Cmeasured at

the Measuring point of case temperature T_C(see: Mechani-

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

warm-up phase. However, the relationship between T_Aand

T_Cdepends heavily on the conditions of operation and inte-

gration into a system. The thermal conditions are influ-

enced by input voltage, output current, airflow, temperature

of surrounding components and the surfaces and proper-

ties of the printed circuit board. T_{A max}is therefore only an

indicative value and under practical operating conditions,

the ambient temperature T_Amay be higher or lower than

this value.

Overtemperature Protection

The converter is protected against possible overheating by

means of an internal temperature monitoring circuit. It

shuts down the unit above the internal temperature limit

and attempts to automatically restart. This feature prevents

excessive internal temperature building up which could oc-

cur under heavy overload conditions.

Connection in Series

The outputs of one or several single or double output power

trains may be connected in series without any precautions.

Caution: The case temperature T_Cmeasured at the:

Measuring point of case temperature T_C(see: Mechani-

cal Data) may under no circumstances exceed the

specified maximum value. The installer must ensure that

under all operating conditions T_Cremains within the lim-

its stated in the table: Temperature specifications.

Connection in Parallel

Several outputs of the same converter with equal output

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

their output currents almost equally.

NOTE: A separate application note is available for uses

when all outputs are paralleled together.

Option -8

Extended Temperature Range

Parallel operation of several converters with the same out-

put 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 is required in true

redundant systems. It is recommended not to parallel more

than three units at full load.

Extension of the temperature range from standard

–40...71°C to –40...85°C (upto 110°C). The modules will

provide the specified ouptut power with free air convection

cooling. In the upper temperature range the output power

derating below should be observed.

Output Power Vs AmbientTemp. and Airflow (-8 version)

The first outputs (main output of 5.1V or 3.3V) of triple out-

put units should not be paralleled, except in true redundant

systems using decoulping diodes.

120

100

80

60

200LFM (0.5 m/s)

1

40

0 LFM

20

0

Ambient Temperature (deg °C)

Fig. 6

Maximum allowed output power versus ambient tempera-

ture.

AUG 13, 2002

Rev 1.0

www.power-one.com

Page 7 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Product Specifications

Aug 2002

U_o1, U_o2[V]

Typical Performance Curves

05039

General conditions:

14

13

12

11

10

– T_A= 25°C, unless T_Cis specified.

– Shut down pin left open circuit.

– Trim input not connected.

U_o2

U_o1

U_o[V]

5.5

I_o1

I_{o1 nom}

05019

[%]

50

75

100

125

150

0

25

5.0

Fig. 10

Flexible load distribution on power train 1 of

40 IMX 35 D12D12-9 (4 x 12 V) with load variation from

4.5

4.0

3.5

3.0

0...150% of P_{o1 nom}on output 1 (Vo1). Output 2 (Vo4)

loaded with 50% of P_{o4 nom}

.

h [%]

05152

90

U_{i min}

0

2

3

4

5

I_o[A]

1

U_{i nom}

Fig. 7

80

70

60

U_oversus I_o(typ) of units with U_o= 5.1 V.

(40 IMX 35-05D12-9).

U_o[V]

05020

13

P_o

100 P_{o total}

12

11

10

9

[%]

25

50

75

Fig. 11

Efficiency versus input voltage and load. Typical values

40 IMX 35 D12D12-9

h [%]

8

05153

90

U_{i min}

7

I_{o total}[A]

0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8

0

80

Fig. 8

_o1/2versus I_o1/2of double output power trains

U_{i nom}

U

(i.e. 2 x 12 V). See: Block diagram 1

70

U_o4[V]

05164

13.5

P_o

60

[%]

13.0

25

50

75

100 P_{o total}

I_o4= 0.035 A

Fig. 12

12.5

Efficiency versus input voltage and load. Typical values

20 IMX 35 D12D12-9

12.0

I_o4= 0.35 A

05041

U_o[%]

11.5

overload short circuit condition

100

11.0

switch-off

0.06

0.20

0.30

0.50 0.60 0.70 I_o1[A]

0.10

0.40

70

Fig. 9

8.5

Cross load regulation U_o4versus I_o1(typ) for various I_o4for

Vo1, Vo4 on power train 1. See: Block diagram dual out-

put types. (20 IMX 35 D12D12-9)

t [ms]

60.5

Fig. 13

Overload switch off (hiccup mode), typical values.

AUG 13, 2002

Rev 1.0

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Page 8 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Product Specifications

Aug 2002

Quad output adjustment

Auxiliary Functions

Adjustable Output Voltage

The quadruple output units are shown in block diagram (fig.

2). All types with equal output voltage have the Trim func-

tion connected to pin 5 referenced to the primary side

which influences all outputs simultaneously. The schemat-

ics are shown in fig. 15, the values of the adjust resistor R_ext

in Table 8 and the external voltage source in Table 9.

As a standard feature, the IMX 35 offer adjustable output

voltages in the range 90...105% of V_{o nom}by use of a con-

trol pin. The Trim control is offered either on primary or sec-

ondary side of the converter depending on type.

Adjustment by means of an external resistor R_ext

:

Adjustment of the output voltage by means of an exter-

nal resistor R_extis possible within the range of

100...105% of V_{o nom}. R_extshould be connected between

Trim (pin 5) and Vi– (pin 2). Connection of R_extto Vi+

may damage the converter. The following table indicates

suitable resistor values for typical output voltages under

nominal conditions (V_{i nom}, I_o= 0.5 I_{o nom}).

Triple output adjustment

Block diagram (fig. 1) shows the triple output units. They of-

fer a Trim1 input (pin 18) on the secondary side to adjust

V_o1. The other outputs remain unchanged.

The IMX 35 triple output feature a main power train with

magnetic feedback and synchronous rectifier. The simpli-

fied circuit is shown in Fig. 14.

Table 8: R_ext1for V_o> V_{o nom}

approximate values (V_{i nom}, I_o= 0.5 I_{o nom}

;

The Trim1 (pin 18) is secondary referenced and influences

only the main power train. Adjustment of the output voltage

is possible by means of an external resistor R_extbetween

the Trim1 pin and either Vo1+ or Vo1–. If the control input

)

V_o[% V_{o nom}R_ext[kΩ]

]

Trim [kΩ]

Trim 1/4 [kΩ]

is left open circuit, the output voltage is set to V_{o1 nom}

.

105...108 (107 typically)

0

Table 7 lists typical values required to program the output

voltage to approximately the values of V_o1indicated.

105

102

100

10

62

ꢀ

17

110

ꢀ

06136

06137

Vi+

Vi–

Vo1+

Trim1

Vo1–

Vi+

4

Vo1+

Vo1–

Vo2+

17

18

4

17

R_ext1

Trim

5

15

13

+

–

Control

U_ext

R_ext

circuit

R_ext2

U_ref= 2.5 V

2

15

Vo2–

Vi–

2

11

Fig. 15

Output voltage control for Quad (double) output units by

means of the Trim input on the primary side.

Fig. 14

Output voltage control for the Trim1 input referenced to

the secondary side.

Adjustment by means of an external voltage source V_ext

Table 7: V_o1versus R_extfor V_o1= 90...105% V_{o nom}; typical

For external output voltage adjustment in the range

85...105% of V_{o nom}a (0...20 V) source V_extis required,

connected to the Trim (pin 5) and Vi–. The table below in-

dicates typical V_oversus V_extvalues. Applying a control

voltage 15...20 V will set the converter into a hiccup

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

same type connected in parallel is feasible.

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

)

V_{o nom}

[V]

R_ext1

R_ext2

V_o1[V]

[kΩ]

V_o1[V]

[kΩ]

3.3

2.97

3.135

1.8

4.7

3.3

3.47

3.673

ꢀ

11

5

5.1

4.59

4.84

5.0

2.2

9.1

33

5.1

5.25

5.35

ꢀ

8.5

3

Table 9: V_oversus V_extfor V_o= 85...105% V_{o nom}

;

typical values (V_{i nom}, I_o= 0.5 I_{o nom}

)

U_o[% U_{o nom}

]

U_ext[V]

Trim [V]

Trim 1/4 [V]

>105

102

100

95

90

85

0

1.5

2.5

4.25

6.2

8

1.8

2.5

4.3

6.2

8

AUG 13, 2002

Rev 1.0

www.power-one.com

Page 9 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Product Specifications

Aug 2002

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Synchronisation (W)

It is posible to synchronise the switching frequency of one

Programmable Input Undervoltage Lockout PUL

special feature of these units is the accurate

undervoltage lockout protection which protects the unit

(and the system) from large currents caused by operation

at low voltages. This ensures easier start-up in distributed

power systems.

or more converters to an external symmetrical clocksignal.

Consult factory if this option is required, for full application

details.

A

This logic input can be used to synchronise the oscillator to

an external frequency source. This pin is edge triggered

with TTL thresholds, and requires a source frequency of

490...540 kHz (duty cycle 10...90%). The external source

frequency is internally divided by 2 to define the switching

frequency for the converter. If unused, this pin can be con-

nected to V1– (pin 2) or left open-circuit.

Table 10: Turn on and turn off voltage

Type

Trigger level

7...8

Hysteresis

Units

V

20 IMX 35

40 IMX 35

70 IMX 35

110 IMX 35

<0.5

<1

14...15.5

31 ... 34

42 ...50

Reference (Ref)

<3

The signal output provides a stable 5 V ( 0.1 V) reference

signal on pin Ref. It is protected by a 1 kΩ resistor. This sig-

nal may be used also in conjunction with the Trim input pin

5 (primary side) as a limited external voltage reference.

<8

See: Electrical input data for a description of the turn on

turn off voltage levels of the various types.

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

between Ref and Vi–, if V_refis used.

The under voltage lockout levels may be programmed by

use of an external resistor to Trim up the preset levels as

indicated in the table below.

Shut Down Function

Table 11: Typical values for R_extand the respective lock-

out voltage for input voltage.

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 the shut down function is not required then

it should be left open-circuit.

20 IMX 35

40 IMX 35

R_ext[kΩ]

R_PUL[kΩ]

Ui _min[V]

U_min[V]

≤15.5

22

Converter operating:

2.0...20 V

ꢀ

39

19

13

9.1

≤8

10

12

14

16

ꢀ

43

16

10

0

Converter shut down: –10...0.7 V

Option i

26

Inhibit (negative shutdown logic)

28

The output 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

unit is turned on. If the inhibit function is not required the

inhibit (pin 8) should be connected to Vi– to enable the out-

put (active low logic, fail safe).

32

70 IMX 35

110 IMX 35

R

_PUL[kΩ]

Ui _min[V]

R_ext[kΩ]

ꢀ

U_min[V]

42

ꢀ

31

40

50

55

Converter operating:

Converter inhibited

–10 V...0.8 V

270

110

270

50

or inhibit pin left open circuit: 2.4 V...20 V

120

60

06138

80

51

75

4

8

2

Vi+

i

Vi–

Fig. 16

If the inhibit is not used the inhibit pin should be con-

nected to Vi–

AUG 13, 2002

Rev 1.0

www.power-one.com

Page 10 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Electromagnetic Compatibility (EMC)

Product Specifications

Aug 2002

which typically occur in many installations, but especially in

battery driven mobile applications.

A suppressor diode together with an input filter form an ef-

fective protection against high input transient voltages

Electromagnetic Immunity

Table 12: Immunity type tests

Phenomenon

Standard ¹

Class

Level

Coupling

mode ²

Value

applied

Waveform

Source

Imped.

Test

procedure

In

oper. form.

Per- ³

Electrostatic

discharge

to case

IEC/EN

61000-4-2

2

3

contact discharge 4000 V_p

(R pin open)

1/50 ns

330 Ω

10 positive and

10 negative

discharges

yes

B

air discharge

(R pin open)

8000 V_p

Electromagnetic IEC/EN

field

antenna

10 V/m

AM 80%

1 kHz

26…1000 MHz

900 MHz

yes

A

61000-4-3

ENV 50204

PM, 50% duty

cycle, 200 Hz

resp. frequ.

Electrical fast

transient/burst

IEC/EN

61000-4-4

4

direct +i/–i

4000 V_pbursts of 5/50 ns 50 Ω

5 kHz rep. rate

1 min positive

1 min negative

transients per

coupling mode

yes

B

transients with

15 ms burst

duration and a

300 ms period

Surge

IEC/EN

61000-4-5 ⁴

3

+i/–i

2000 V_p

1.2/50 µs

2 Ω

5 pos. and 5 neg.

impulses per

coupling mode

EN 50155

D

G

3

1800V

8400V

10 V_rms

5/50 µs

.05/01 µs

100 Ω

50 Ω

triangular

yes

B

A

Conducted

disturbancies

IEC/EN

61000-4-6

AM modulated

0.15...80 MHz

(140 dBµV) 80%, 1 kHz

150 Ω

¹Related and previous standards are referenced in: Technical Information: Standards.

²i = input, o = output.

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

⁴External components required.

Electromagnetic Emission

[dBµV]

90

07020

80

EN 55022 A

EN 55022 B

70

60

50

40

30

20

10

0

MHz

Fig. 17

Typical disturbance voltage (quasi-peak) at the input ac-

cording to CISPR 11/EN 55011 and CISPR 22/EN 55022,

measured at U_{i nom}and I_{o nom}. Output leads 0.1 m, twisted.

(40 IMX 35 D12D12-9)

AUG 13, 2002

Rev 1.0

www.power-one.com

Page 11 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

CISPR 22/EN 55022, Level B Radiated

Product Specifications

Aug 2002

07114

Electromagnetic emission requirements according to

EN 55022, class B (radiated) can be achieved by adding an

external common mode choke and (for 20 IMX 35 types) an

L

V+

Vi+

additional capacitor, see: Input Data. The filter components

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

converter.

Module

Vi–

V–

Table 13: Input filter components for EN 55022, level B,

radiated.

Type

Current compensated choke

Fig. 18

20 IMX 35

40 IMX 35

70 IMX 35

110 IMX 35

Murata PLH1OA series 7003R6P02

Murata PLH1OA series 1612R1P02

Murata PLH1OA series 2911R2P02

Murata PLH1OA series 3711R0P02

Example for external circuitry to comply with CISPR22/EN

55022, level B, radiated

Immunity to Environmental Conditions

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

Temperature

-8 ³

Characteristics

Conditions

Operational ²

min

–40

–55

max

85²

Unit

°C

T_A

T_C

T_S

Ambient temperature ¹

Case temperature

Storage temperature ¹

110

Non operational

¹MIL-STD-810D section 501.2 and 502.2

²See: Thermal Considerations

³Start up at –55°C

Table 15: MTBF and device hours

MTBF (Standard)

Ground Benign

Ground Fixed

Ground Mobile

40 IMX 35 (MIL-HDBK-217F)

110 IMX 35 (Bellcore)

336,000 hrs (T_C= 40°C) 141,000 (T_C= 40°C) 86,000 (T_C= 70°C) 110,000 (T_C= 50°C)

1,372,000 hrs @ 25°C at 100% load

Table 16: Environmental testing

Test Method

Standard

IEC/DIN IEC 60068-2-3

MIL-STD-810D section 507.2 Relative humidity:

Duration:

Test Conditions

Status

Ca

Ea

Eb

Fc

Damp heat

steady state

Temperature:

40 ²°C

%

56 days

Unit not

operating

93 ^+2/-3

Shock

(half-sinusoidal)

IEC/EN/DIN EN 60068-2-27

MIL-STD-810D section 516.3 Bump duration:

Number of bumps:

Acceleration amplitude:

100 g_n= 981 m/s²

6 ms

18 (3 each direction)

Unit

operating

Bump

(half-sinusoidal)

IEC/EN/DIN EN 60068-2-29

MIL-STD-810D section 516.3 Bump duration:

Number of bumps:

Acceleration amplitude:

40 g_n= 392 m/s²

6 ms

6000 (1000 each direction)

Unit

operating

Vibration

IEC/EN/DIN EN 60068-2-6

Acceleration amplitude:

0.35 mm (10...60 Hz)

Unit

(sinusoidal)

5 g_n= 49 m/s²(60...2000 Hz) operating

10...2000 Hz

Frequency (1 Oct/min):

Test duration:

7.5 h (2.5 h each axis)

Fh

Kb

Vibration

broad-band

random

IEC/EN 60068-2-64

MIL-STD-810D section 514.3 Frequency band:

Acceleration magnitude:

Acceleration spectral density: 0.05 g_n²/Hz

Unit

operating

20...500 Hz

4.9 g_{n rms}

(digital control)

Test duration:

3 h (1 h each axis)

Salt mist, cyclic

(sodium chloride

NaCl solution)

IEC/EN/DIN IEC 60068-2-52 Concentration:

5% (30°C)

Unit not

operating

Duration:

Storage:

Storage duration:

Number of cycles:

2 h per cycle

40°C, 93% rel. humidity

22 h per cycle

3

AUG 13, 2002

Rev 1.0

www.power-one.com

Page 12 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Product Specifications

Aug 2002

Mechanical Data

Dimensions in mm. Tolerances 0.3 mm unless otherwise indicated.

European

Projection

09121

09123

0.8 x 0.8

thread M3

0.8 x 0.8

Tc

63.5

72.8

63.5

69.6

76.2

Tc

Cores

Fig. 20

Case IMX 35 open frame (option Z)

Weight: 43 g

Fig. 19

Case IMX 35 (Standard)

Weight: 67 g

AUG 13, 2002

Rev 1.0

www.power-one.com

Page 13 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Product Specifications

Aug 2002

Safety and Installation Instructions

Table 18: Pin allocation

Installation Instructions

Pin No.

Triple

output

Quadruple

output

Installation of the DC-DC converters must strictly follow the

national safety regulations in compliance with the enclo-

sure, mounting, creepage, clearance, casualty, markings

and segregation requirements of the end-use application.

1

2

PUL

Vi–

PUL

Vi–

3

n.c.

Connection to the system shall be made via a printed cir-

cuit board with hole diameters of 1.5 mm for the pins.

4

Vi+

The units should be connected to a secondary circuit.

5

n.c.

Trim or Trim1

W

Check for hazardous voltages before altering any connec-

tions.

6

W

7

Ref

Do not open the module.

8

SD or i

Vo3–

Vo3+

Vo2+

Vo2–

Vo1–

n.c.

SD or i

Vo3–

Vo3+

Vo2+

Vo2–

Vo1–

Vo1+

Vo4+

Vo4–

n.c.

Ensure that a unit failure (e.g. by an internal short-circuit)

does not result in a hazardous condition. See also: Safety

of operator accessible output circuit.

11

12

13

14

15

16

17

18

19

Input Fuse

To prevent excessive current flowing through the input sup-

ply line in case of a short-circuit across the converter input

an external fuse should be installed in a non earthed input

supply line. We recommend a fast acting fuse F8.0A for

20 IMX 35 types, F4.0 A for 40 IMX 35 types, F2.0 A for

70 IMX 35 types and F2.0 A for 110 IMX 35 types.

Vo1+

Trim1

n.c.

Standards and approvals

09122

All DC-DC converters are pending to be UL recognized ac-

cording to UL 1950, UL recognized for Canada to CAN/

CSA C22.2 No. 950-95 and LGA approved to IEC/EN

60950 standards.

11

12

13

14

15

16

17

18

19

1

2

3

4

5

6

7

8

Bottom

view

The units have been evaluated for:

• Building in

• Basic insulation input to output, based on their maximum

input voltage

• The use in a pollution degree 2 environment

• Connecting the input to a secondary circuit which is sub-

ject to a maximum transient rating of 1500 V

Fig. 21

Pin allocation

After approvals the DC-DC converters are subject to manu-

facturing surveillance in accordance with the above men-

tioned UL, CSA, EN and with ISO 9001 standards.

Protection Degree

The protection degree of the DC-DC converters is IP 30

(not for option Z).

Isolation

The electric strength test is performed as factory test in ac-

cordance with IEC/EN 60950 and UL 1950 and should not

be repeated in the field. Power-One will not honour any

guarantee claims resulting from electric strength field tests.

Cleaning Agents

In order to avoid possible damage, any penetration of

cleaning fluids should be prevented, since the power sup-

plies are not hermetically sealed.

Table 17: Electric strength test voltages

However, open cased units (option Z) which leave the fac-

tory unlacquered may be cleaned and lacquered by the

customer.

Characteristic

Input to output

IMX 35

Output to

output

Unit

Electric strength

test voltage 1 s

1.2

1.5

kV_rms

kV DC

MΩ

0.2

-

Insulation resistance

at 500 V DC

>100

Partial discharge

extinction voltage

Consult factory

-

kV

AUG 13, 2002

Rev 1.0

www.power-one.com

Page 14 of 15

IMX35 Series: 35W DC-DC Converters

9-36V, 18-75V, 40-121V & 60-150V Inputs

Dual/Triple/Quad Outputs 3.3V, 5V, 12V & 15V

Safety of operator accessible output circuit

Product Specifications

Aug 2002

IEC/EN 60950 up to a configured output voltage (sum of

nominal voltages if in series or +/– configuration) of 42 V.

If the output circuit of a DC-DC converter is operator acces-

sible, it shall be an SELV circuit according to the IEC/EN

60950 related safety standards

However, it is the sole responsibility of the installer to en-

sure the compliance with the relevant and applicable safety

regulations. More information is given in: Technical Infor-

mation: Safety.

The following table shows some possible installation con-

figurations, compliance with which causes the output circuit

of the DC-DC converter to be an SELV circuit according to

Table 19: Insulation concept leading to an SELV output circuit

Conditions Front end

DC-DC converter

Result

Supply

voltage

Minimum required grade Maximum Minimum required

of isolation, to be provided DC output safety status of the

Type

Measures to achieve the Safety status of

specified safety status of the DC-DC

by the AC-DC front end,

including mains supplied

battery charger

voltage

from the

front end ¹

front end output

circuit

the output circuit

converter output

circuit

Mains

≤250 V AC

Basic

<60 V

<75 V

Earthed SELV circuit ²IMX 35 Operational insulation

(provided by the DC-DC

SELV circuit

converter)

Hazardous voltage

secondary circuit

IMX 35 Input fuse ³output sup-

pressor diodes ⁴, and

Earthed SELV

circuit

2

earthed output circuit

¹The front end output voltage should match the specified input voltage range of the DC-DC converter.

²The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950.

³The installer shall provide an approved fuse (type with the lowest rating suitable for the application) in a non-earthed input conductor

directly at the input of the DC-DC converter (see fig.: Schematic safety concept). For UL’s purpose, the fuse needs to be UL-listed.