20IMX35D05D12-8IZ-G--Datasheet/数据表在线中文翻译

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

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

10.5

0.41"

63.5

2.5"

76.2

3"

• 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

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

60950-1 2^ndEd.

8.9

0.35"

47.8

1.88"

72.8

2.87"

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.

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.

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

Table of Contents

Page

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

BCD20009-G Rev AC, 06-May-2013

Page 1 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

Model Selection

Table 1: Model Selection

Output 1

Output 2

Output 3

Output 4

Input voltage

V_{i min}to V_{i max}

[V]

Efficiency ¹

Model

Opt.

V_onom

I_onom

V_onom

I_onom

V_onom

I_onom

V_onom

I_onom

η

typ

min

[V]

[A]

[V]

[A]

[V]

[A]

[V]

[A]

[%]

5

1.35

1.4

5

1.35

1.4

5

1.35

1.4

5

1.35

1.4

9 to 36

82.5

86

87

86

20IMX35D05D05-8

40IMX35D05D05-8

70IMX35D05D05-8

110IMX35D05D05-8

i

Z

G

18 to 75

82

40 to 121

60 to 150²

83

82

12

0.65

0.7

12

0.65

0.7

12

0.65

0.7

12

0.65

0.7

9 to 36

18 to 75

83.7

85

86

88

20IMX35D12D12-8

40IMX35D12D12-8

70IMX35D12D12-8

110IMX35D12D12-8

40 to 121

60 to 150²

84

15

0.55

0.6

15

0.55

0.6

15

0.55

0.6

15

0.55

0.6

9 to 36

18 to 75

85

83.6

84.5

83

88

89

88

20IMX35D15D15-8

40IMX35D15D15-8

70IMX35D15D15-8

110IMX35D15D15-8

40 to 121

60 to 150²

5

1.35

1.4

12

0.65

0.7

12

0.65

0.7

5

1.35

1.4

9 to 36

18 to 75

84

88

89

88

20IMX35D05D12-8

40IMX35D05D12-8

70IMX35D05D12-8

110IMX35D05D12-8

40 to 121

84

60 to 150²

83.6

5

1.35

1.4

15

0.55

0.6

15

0.55

0.6

5

1.35

1.4

9 to 36

18 to 75

83.5

84

88

89

88

20IMX35D05D15-8

40IMX35D05D15-8

70IMX35D05D15-8

110IMX35D05D15-8

40 to 121

60 to 150²

84

1

2

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

154 V for 2 s.

Part Number Description

Input voltage range V_i

40 IMX35 D05 D05 -8 i Z G

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 (1^stpower train)............... D05, D12, D15

Outputs 2 and 3 (2^ndpower train) .............. D05, D12, D15

Operating ambient temperature range

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

Options:

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

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

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

1

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

Preferred for new designs

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.

BCD20009-G Rev AC, 06-May-2013

Page 2 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

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.

Functional Description

The IMX35 converters are comprised of 2 feedback-controlled

interleaved-switching flyback power trains using current mode

PWM (pulse width modulation).

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).

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

The incorporated overtemperature protection shuts down the

converter in excessive overload conditions with automatic

restart.

03098a

Vi+

4

16

15

Vo1+

Vo1–

1

5

6

7

8

2

3

PUL

Trim/Trim1

17 Vo4+

18 Vo4–

13 Vo2+

PWM

W

Ref

SD

Vi–

n.c.

14

12

Vo2–

Vo3+

11 Vo3–

19 n.c.

Fig. 1

Block diagram of quad-output models

BCD20009-G Rev AC, 06-May-2013

Page 3 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

Electrical Input Data

General conditions:

T_A= 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

40IMX35

Unit

Characteristics

Conditions

min

9 ²

typ

max

36

min

18 ²

typ

max

75

V_i

Input voltage range ¹

T_{A min}to T_{A max}

I_o= 0 to I_{o nom}

VDC

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

Converter

Switch on

S¯¯D high

Worst case condition at

V_{i min}and full load

0.25

0.25 0.5

s

start-up time ²

0.1

3

t_rise

Rise time³

V_{i nom}resist load

I_{o nom}capac. load

I_o= 0, V_{i min}to V_{i max}

I_o= 0 to I_{o nom}

3

6

ms

12

70

30

8

6

12

50

30

9

I_{i o}

I_irr

No load input current

Reflected ripple current

Inrush peak current ⁴

Input capacitance

mA

mA_pp

A

I_{inr p}

C_i

V_i= V_{i nom}

for surge calculation

Converter disabled

Converter operating

2

1.3

µF

––

V_SD

Shut down voltage

–10 to 0.7

V

open circuit or 2 to 20

––

R_SD

Shutdown input resistance

approx. 10

12

approx. 10

6

k Ω

mA

kHz

––

I_SD

Inputcurrentduringshutdown V_{i min}to V_{i max}

Switching frequency V_{i min}to V_{i max}, I_o= 0 to I_{o nom}

f_s

220

240

220

240

Input

70IMX35

110IMX35

Unit

Characteristics

Conditions

min

40 ²

typ

max

121

min

60²

typ

110

0.4

max

150⁵

V_i

Input voltage range ¹

T_{A min}to T_{A max}

I_o= 0 to I_{o nom}

VDC

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

0.7

0.1

Converter

Switch on

S¯¯D high

Worst case condition at

V_{i min}and full load

0.25

s

start-up time ²

t_rise

Rise time³

V_{i nom}resist load

I_{o nom}capac. load

I_o= 0, V_{i min}to V_{i max}

I_o= 0 to I_{o nom}

3

6

3

6

ms

12

30

7

12

20

30

7

I_{i o}

I_irr

No load input current

Reflected ripple current

Inrush peak current ⁴

Input capacitance

mA

mA_pp

A

I_{inr p}

C_i

V_i= V_{i nom}

for surge calculation

Converter disabled

Converter operating

0.5

µF

––

V_SD

Shut down voltage

–10 to 0.7

V

open circuit or 2 to 20

––

R_SD

Shutdown input resistance

approx. 10

5

approx. 10

5

kΩ

mA

kHz

––

I _SD

Inputcurrentduringshutdown V_{i min}to V_{i max}

Switching frequency V_{i min}to V_{i max}, I_o= 0 to I_{o nom}

f_s

220

240

220 240

3

4

5

1

2

Measured with resistive and max. admissible capacitive load.

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

154 V during 2 s

V_{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,

V_{i min}will be proportionately increased.

Input undervoltage lockout at typ. 85% of V_{i min}

.

BCD20009-G Rev AC, 06-May-2013

Page 4 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

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 in order to further reduce this

current.

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

A

04022b

Model

Breakdown

voltage

Peak power

at 1 ms

Peak pulse

current

I_pp[A]

4

3

2

V_{Br nom}[V]

P_p[Ω]

20IMX35

40IMX35

70IMX35

110IMX35

39

1500

600

22

9.7

2.9

2.5

100

151

176

1

t

100 µs

600

0

20

60

80

40

Fig. 2

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.

Typical inrush current at V_{i nom}, P_{o nom}versus time (40IMX35).

Source impedance according to ETS 300132-2 at V_{i nom}

.

V_o

t_rise

04008b

V_{o nom}

Table 5: Components for external circuitry for IEC/EN

61000-4-5, level 2

Model

Inductor (L)

22 µH /5 A

Capacitor (C)

470 µF /40 V

Diode (D)

20IMX35

40IMX35

70IMX35

110IMX35

1.5 k E47A

t

t_startup

68 µH /2.7 A

100 µH /1 A

150 µH /0.8 A

2 x 100 µF /100 V

2 x 82 µF /200 V

-

Fig. 3

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

04036a

L

Reverse Polarity Protection

Vi+

Vi–

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.

+

C

D

Table 3: Recommended external fuses in the non-earthed

input line

Converter model

Fuse type

Fig. 4

20IMX35

F8.0A

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

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

40IMX35

F4.0A

70IMX35

F2.0A

110IMX35

F1.5A

BCD20009-G Rev AC, 06-May-2013

Page 5 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

Electrical Output Data

General conditions:

– T_A= 25 °C, unless T_Cis 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

typ

2 x 15 V

Unit

Characteristics

Conditions

min typ max

min

max

min

typ max

V_o1

Output voltage

V_{i nom}

4.95

4.94

5.05

5.06

11.88

11.86

12.12

12.14

14.85

14.82

15.15

15.18

VDC

A

V_o2

I_o= 0.5 I_{o nom}

I_{o nom}

Output current

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

40IMX

2 × 1.35

2 × 1.4

3.5

2 × 0.65

2 × 0.70

1.8

2 × 0.55

2 × 0.60

1.5

70IMX

110IMX

I_oL

Current limit¹

20IMX V_{i nom}, T_C= 25 °C

V_o= 93% V_{o nom}

40IMX

3.8

2.0

1.7

70IMX

110IMX

∆V_o

Line regulation

Load regulation

V_{i min}to V_{i max}, I_{o nom}

±1

±3

±1

±3

±1

±3

%

∆V_{o l}

V_{i nom}

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

2

3

V_o1/2

Output voltage noise

V_{i min}to V_{i max}

I_o= I_{o nom}

80

40

120

60

150

70

mV_pp

V_{o L}

Output overvoltage limit. ⁴

Admissible capacitive load

Min. load 1%

produced after 2011

115

0

130

6000

115

0

130

680

115

0

130

470

%

C_{o ext}

µF

5

per power train

V_{o d}

t_d

Dynamic

load

regulation

Voltage deviat. V_{i nom}

±250

0.75

±480

0.75

±520

0.75

mV

ms

I

_{o nom}↔ ¹/

I_{o nom}

2

Recovery time

α_Vo

Temperature coefficient

∆V_o/∆T_C

V_{i min}to V_{i max}

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

±0.02

%/K

1

Both 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).

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

Measured with a probe according to EN 61204

2

3

4

5

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

Sum of the capacities on both outputs of each power train

BCD20009-G Rev AC, 06-May-2013

Page 6 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

V_o[%]

Thermal Considerations

overload short-circuit condition

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

stationary air (convection cooling) at the indicated maximum

ambient temperature T_{A max}(see table Temperature specifi-

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

power, the case temperature T_C(T_{C Z}with option Z) measured

at the measuring point of case temperature (see Mechanical

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

up phase. However, the relationship between T_Aand T_C

depends heavily on the conditions of operation and integration

into a system. The thermal conditions are influenced by input

voltage, output current, airflow, temperature of surrounding

components and the surfaces and properties 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.

100

switch-off

05041b

70

t

0

0.3 s

Fig. 6

Overload switch off (hiccup mode), typical values.

Series and Parallel Connection

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

be connected in series respecting the current limitation.

Caution: The case temperature T_C(or T_{C 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 T_C(or

T_{C Z}) remains within the limits stated in the table Temperature

specifications.

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.

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.

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.

P_o/P_{o max}

11047-X35a

JM138

1.0

0.8

IMX35D12D12-9

Vo1+

16

Vi+

4

0.5 m/s

= 100 LFM

0.6

1

5

6

7

8

2

3

PUL

Vo1–

Vo4+

natural cooling

15

17

0.4

0.2

0

Trim

W

PWM

Ref

Vo4–

Vo2+

–24V

+24V

18

13

T_A

SD

Vi–

n.c.

20

40

60

80

100

°C

Fig. 5

Maximum allowed output power versus ambient

temperature.

Vo2–

Vo3+

14

12

Overtemperature Protection

Vo3–

11

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.

19 n.c.

Fig. 7

Generating 24 V with an IMX35D12D12-9

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.

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).

BCD20009-G Rev AC, 06-May-2013

Page 7 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

η [%]

Typical Performance Curves

05153a

90

General conditions:

V_{i min}

– T_A= 25°C, unless T_Cis specified.

– Shut down and Trim pin left open-circuit.

80

V_{i nom}

V_o[V]

05020-X35

13

12

11

10

9

70

P_o

100 % P_{o total}

60

25

50

75

Fig. 11

8

Efficiency versus input voltage and load. Typical values

(20IMX35D12D12-8)

I_{o total}

0

0.5

1

1.5

2

A

Fig. 8

V_oversus I_o(typ.) of double-output power trains, with both

outputs in parallel (e.g., V_o1/4of a 40IMX35D12D12)

η [%]

05152a

90

V_{i min}

V_{i nom}

V_o4[V]

80

70

05164b

13.5

13

I_o4= 0.035 A

12.5

12

P_o

100 % P_{o total}

60

25

I_o4= 0.35 A

50

75

11.5

I_o1

Fig. 12

0.06

0.2

0.3

0.5

0.6

0.7 A

0.1

0.4

Efficiency versus input voltage and load. Typical values

(40IMX35D12D12-8)

Fig. 9

Cross load regulation (typ.) on power train 1. V_o4versus I_o1

V_o1, V_o4[V]

05039b

14

13

12

11

10

V_o4

V_o1

I_o1/I_{o1 nom}

0.5

0.75

1

1.25

1.5

0

0.25

Fig. 10

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

40IMX35D12D12-8:

V_o1versus I_o1, I_o4= 0.5 I_{o4 nom}

BCD20009-G Rev AC, 06-May-2013

Page 8 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

Table 8: V_oversus V_extfor V_o= 85 to 105% V_{o nom}

;

Auxiliary Functions

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

)

Adjustable Output Voltage

V_o[% V_{o nom}

]

V_ext[V]

As a standard feature, the IMX35 offer adjustable output

voltages in the range of 85 to 105% of V_{o nom}. Fig. 12 shows the

schematic diagram for the adjustment of quad-output models.

Trim [V]

Trim1 [V]

>105

102

100

95

0

1.5

2.5

4.25

6.2

8

1.8

2.5

4.3

6.2

8

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 (V_o1and V_o4).

90

85

Adjustment by means of an external resistor R_ext

:

Synchronization (W)

06137c

It is possible to synchronize the switching frequency of one or

more converters to an external clock signal.

Vi+

Vo1+

Vo1–

Vo2+

16

4

5

Trim

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.

15

13

+

–

Control

circuit

V_ref= 2.5 V

V_ext

R_ext

Vi–

Vo2–

2

14

Fig. 13

Reference Output (Ref)

Output voltage control by means of the Trim input

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.

Adjustment of the output voltage by means of an external

resistor R_extis possible within the range of 100 to 105% of

V_{o nom}. R_extshould be connected between Trim (pin 5) and Vi–

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

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

0.5 I_{o nom}).

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

between Ref and Vi–, if Ref is used.

Shutdown

Note: Connection of R_extto Vi+ may damage the converter.

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:

Adjustment by means of an external voltage source V_ext

Table 7: R_extfor V_o> V_{o nom}

;

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

)

Converter operating:

Converter disabled:

2.0 to 20 V

–10 to 0.7 V

V_o[% V_{o nom}

]

R_ext[kΩ]

Trim

Trim1

105 to 108 (107 typically)

0

17

110

∞

105

102

100

10

62

∞

For external output voltage adjustment in the range 85 to

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

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

indicates typical values V_oversus V_ext. 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.

BCD20009-G Rev AC, 06-May-2013

Page 9 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

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.

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

Model

Trigger level

7 to 8

Hysteresis

Unit

20IMX35

40IMX35

70IMX35

110IMX35

<0.5

<1

V

14 to 15.5

31 to 34

<3

42 to 50

<8

The undervoltage lockout levels may be programmed by using

an external resistor R_PULbetween PUL and Vi– to increase the

preset levels as specified in table 10.

Table 10: Typical values for R_PULand the respective lockout

voltage for input voltage.

20IMX35

40IMX35

R_PUL[kW]

V_{i min}[V]

R_PUL[kW]

V_{i min}[V]

∞

39

19

13

9.1

≤ 8

10

12

14

16

∞

43

16

10

0

≤ 15.5

22

26

28

32

70IMX35

110IMX35

R_PUL[kW]

V_{i min}[V]

R_PUL[kW]

V_{i min}[V]

∞

270

110

80

31

40

50

55

∞

42

50

60

75

270

120

51

BCD20009-G Rev AC, 06-May-2013

Page 10 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

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

Electromagnetic Immunity

Table 11: Immunity type tests

Phenomenon

Standard

Class

Level

Coupling

mode ¹

Value

Waveform

Source

imped.

Test

In

Perf-

applied

procedure

oper. crit.²

Electrostatic

discharge

to case

IEC/EN

2

contact discharge 4000 V_p

(Trim pin open)

1/50 ns

330 Ω

10 positive and

10 negative

discharges

yes

B

61000-4-2

3

air discharge

8000 V_p

10 V/m

(Trim pin open)

Electromagnetic IEC/EN

field

3 ³

3

antenna

AM 80%

1 kHz

n.a.

80 to 1000 MHz

900 MHz

yes

A

61000-4-3

ENV 50204

PM, 50% duty

cycle, 200 Hz

repetition frequ.

Electrical fast

IEC/EN

4

direct +i/–i

±4000 V_pbursts of 5/50ns

2.5/5 kHz

50 Ω

60 s positive,

60 s negative

transients per

coupling mode

yes

B

transients/burst 61000-4-4

over 15 ms,

burst period

300 ms

Surges

IEC/EN

61000-4-5

3 ⁴

+i/–i

±2000 V_p

1.2/50 µs

2 Ω

5 pos. and 5 neg.

surges

yes

B

EN 50155:

2001

A ⁵

B⁶

3

+i/c, –i/c

+i/–i

±1800 V_p

8400 V_p

5/50 µs

100 Ω

50 Ω

yes

B

A

0.05/0.1 µs

RF Conducted

immunity

IEC/EN

61000-4-6

10 VAC

(140 dBµV)

AM modulated

80%, 1 kHz

0.15 to 80 MHz

150 Ω

1

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

2

3

4

5

6

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

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

External components required; see fig. 4

Corresponds to EN 50155:1995, waveform D

Corresponds to EN 50155:1995, waveform G

Electromagnetic Emissions

PMM 8000 PLUS: Peak, conducted Vi+, QP

+ AV, 2006-10-01, 2x 1.1 mH,

dBµV

110IMX35D05D12,

U

=110 V,

U

=U =5 V,

I

=U =1.4 A,

U

=U =12

V

I

=U =0.6 A

i

o1 o4

o2 o3

JM072

80

EN 55022 A QP

EN 55022 A AV

60

40

20

0

0.2

0.5

1

2

5

10

20 MHz

Fig. 14

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

according to EN 55011/22, measured at V_{i nom}and I_{o nom}

(110IMX35D05D12-8 with input choke 2× 1.1 mH).

BCD20009-G Rev AC, 06-May-2013

Page 11 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

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.

07114c

Vi+

L_i

+

Converter

C_i

Table 12: Input filter components

–

Vi–

Model

Common mode choke

Ceramic cap

L₁(Murata)

C₁

20IMX35

40IMX35

70IMX35

110IMX35

70 µH / 3.6 A, PLH10AN7003R6P2

4.7 µF / 50 V

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

Fig. 15

External filter circuitry

290 µH / 1.2A, PLH10AN2911R2P2

370 µH / 1.0A, PLH10AN3711R0P2

1 µF / 200 V

Immunity to Environmental Conditions

Table 13: Mechanical and climatic stress

Test method

Standard

Test conditions

Status

Cab

Damp heat

steady state

IEC/EN 60068-2-78

MIL-STD-810D section 507.2

Temperature:

Relative humidity:

Duration:

40 ^±2°C

Converter

not

operating

93 ^+2/-3

%

56 days

--

Salt mist test

EN 50155:2007

sect. 12.2.10

class ST3 ²

Temperature:

Duration:

35^±2°C

48 h

Converter

not

operating

sodium chloride

(NaCl) solution ²

Eb

Fc

Bump

IEC/EN 60068-2-29

Acceleration amplitude:

Bump duration:

25 g_n= 245 m/s²

6 ms

Converter

operating

(half-sinusoidal)

MIL-STD-810D section 516.3

Number of bumps:

6000 (1000 in each direction)

Vibration

(sinusoidal)

IEC/EN 60068-2-6

MIL-STD-810D section 514.3

Acceleration amplitude:

0.35 mm (10 – 60 Hz)

5 g_n= 49 m/s²(60 - 2000 Hz)

10 – 2000 Hz

Converter

operating

Frequency (1 Oct/min):

Test duration:

7.5 h (2.5 h in each axis)

Fh

Random vibration

broad-band

(digital control) and

guidance

IEC/EN 60068-2-64

Acceleration spectral density: 0.05 g_n²/Hz

Converter

operating

Frequency band:

Acceleration magnitude:

Test duration:

8 – 500 Hz

4.9 g_rms

1.5 h (0.5 h in each axis)

Ea

--

Shock

IEC/EN 60068-2-27

Acceleration amplitude:

Bump duration:

50 g_n= 490 m/s²

Converter

operating

(half-sinusoidal)

MIL-STD-810D section 516.3

11 ms

Number of bumps:

18 (3 in each direction)

Shock

EN 50155:2007 sect. 12.2.11

EN 61373 sect. 10, class B,

body mounted¹

Acceleration amplitude:

Bump duration:

Number of bumps:

5.1 g_n

30 ms

18 (3 in each direction)

Converter

operating

--

Simulated long life EN 50155:2007 sect. 12.2.11

Acceleration spectral density: 0.02 g_n²/Hz

Converter

operating

testing at

EN 61373 sect. 8 and 9,

Frequency band:

Acceleration magnitude:

Test duration:

5 – 150 Hz

increased random

vibration levels

Body mounted¹

0.8 g_{n rms}

15 h (5 h in each axis)

1

Body mounted = chassis of a railway coach

Models without option Z

2

BCD20009-G Rev AC, 06-May-2013

Page 12 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

Temperatures

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

Temperature

-8

Unit

Characteristics

Conditions

min

–40 ³

–55

max

85 ¹

T_A

T_C

Ambient temperature

Operational¹

°C

Case temperature (without opt. Z) ²

105 ²

110 ²

105

T_{C Z}Component temp. with opt. Z ²

T_S

Storage temperature

Non operational

1

See Thermal Considerations

2

3

Temperature measurment point; see Mechanical Data

Start-up at – 55 °C

Reliability

Table 15: MTBF at nom. load

Model

Ground benign

40 °C

Ground fixed

Ground mobile Device hours¹

50 °C

Unit

40 °C

70 °C

86 000

294 000

40IMX35 (MIL-HDBK-217F, T_C)

110IMX35 (Bellcore, T_A)

336 000

141 000

529 000

110 000

144 000

396 000

h

1445 000

1

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

Mechanical Data

Dimensions in mm.

European

Projection

4 threads M3

09121c

09123c

0.8 x 0.8

T_{C Z}

0.8 x 0.8

thread M3

Bottom

view

Bottom

view

T_{C Z}

63.5

72.8

63.5

69.6

76.2

T_{C Z}

T_C

Cores

Fig. 17

Fig. 16

Case IMX35 (Standard)

Material: Zinc; weight: approx. 67 g

Case IMX35 open frame (option Z)

Weight: approx. 43 g

BCD20009-G Rev AC, 06-May-2013

Page 13 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

Installation Instructions

Safety and Installation Instructions

Pin allocation

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.

Table 16: Pin allocation

Pin No.

Quadruple

output

Connection to the system shall be made via a printed circuit

board with hole diameters of 1.5 mm for the pins.

1

2

PUL

Vi–

The converters should be connected to a secondary circuit.

Do not open the converter.

3

n.c.

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

circuit) does not result in a hazardous condition.

4

Vi+

5

Trim or Trim1

W

6

Input Fuse

7

Ref

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.

8

SD or i

Vo3–

Vo3+

Vo2+

Vo2–

Vo1–

Vo1+

Vo4+

Vo4–

n.c.

11

12

13

14

15

16

17

18

19

Standards and Approvals

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

UL/CSA 60950-1 2^ndEd.

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.

09122a

CB scheme is available.

11

12

13

14

15

16

17

18

19

1

Railway Applications

To comply with Railway standards, all components are coated

with a protective lacquer (except for option Z).

2

3

4

5

6

7

8

Bottom

view

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.

Fig. 18

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

1.5 mm.

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.

BCD20009-G Rev AC, 06-May-2013

Page 14 of 15

IMX35 Series Data Sheet

35 Watt Quad-Output DC-DC Converters

®

Table 17: Electric strength test voltages

Characteristic

Input to

Outputs to

case

Between

outputs

Unit

(outputs+case)

20/40IMX35 ¹

(outputs+case)

70/110IMX35 ¹

1

all models

Factory test >1 s

1.2

1.5

1.8

2.5

0.5

0.7

0.15²

0.2²

kVAC

kVDC

Equivalent DC voltage

Insulation resistance

at 500 VDC

>100

–

MΩ

1

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

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

2

Isolation

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

not honor any warranty claims resulting from electric strength

field tests.

The electric strength test is performed in the factory as a

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

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

logic, fail safe).

Options

i: Inhibit (Negative Shutdown Logic)

Voltage at pin 8:

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)

Converter operating:

Converter disabled:

–10 V to 0.8 V

2.4 V to 20 V or left

open-circuit

Z: Open Frame

06138a

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.

4

8

2

Vi+

i

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

as this will damage the glue of the ferrite cores.

Vi–

G: RoHS-6

Fig. 19

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

Converters with a type designation ending by G are RoHS-

compliant for all six substances.

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.

BCD20009-G Rev AC, 06-May-2013

Page 15 of 15