EP1922738B1 - Übertrager - Google Patents

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Publication number
EP1922738B1
EP1922738B1 EP06791723.7A EP06791723A EP1922738B1 EP 1922738 B1 EP1922738 B1 EP 1922738B1 EP 06791723 A EP06791723 A EP 06791723A EP 1922738 B1 EP1922738 B1 EP 1922738B1
Authority
EP
European Patent Office
Prior art keywords
transformer
substrate
primary
inductive
component
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP06791723.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1922738A1 (de
Inventor
Jörg BLANKE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of EP1922738A1 publication Critical patent/EP1922738A1/de
Application granted granted Critical
Publication of EP1922738B1 publication Critical patent/EP1922738B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F19/00—Fixed transformers or mutual inductances of the signal type
    • H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range
    • H01F19/08—Transformers having magnetic bias, e.g. for handling pulses
    • H01F2019/085—Transformer for galvanic isolation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2804—Printed windings
    • H01F2027/2814—Printed windings with only part of the coil or of the winding in the printed circuit board, e.g. the remaining coil or winding sections can be made of wires or sheets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H01F27/292—Surface mounted devices

Definitions

  • the present invention relates generally to the field of interface technology.
  • electronic components such as modular converters for the measurement control and regulation technology, in particular buffer amplifiers are known.
  • buffer amplifiers can be used for galvanic isolation, conversion, amplification and filtering of standard and standard signals and adaptation of analog signals.
  • isolation amplifiers are galvanically isolated in the input, output and supply circuits. This separation avoids the influence of different sensor circuits and actuator circuits with each other by the fact that the ground loops, which are caused by grounding of the various circuits are interrupted.
  • the invention relates to a transmitter as a miniature device.
  • WO 88/07257 A1 is a high-frequency device with one or more toroidal cores, known with two carrier plates and with webs on the support plates for receiving the toroidal cores, wherein the carrier plates are provided with conductor tracks, which are completed via bridges to closed turns around the toroidal legs. A lying inside the support plate conductor for coupling adjacent ring cores is not provided.
  • Out DE 33 22 004 A1 is a transformer with an insulating support and printed thereon with printed conductors, forming the coils around the legs of toroidal cores.
  • the insulating support has recesses and resilient tongues for holding the toroidal cores.
  • the galvanic isolation is effected, for example, by inductive passive components which have the property that the electrical energy can be transmitted.
  • An important passive component in electrical engineering is the transformer. With the help of a transformer, AC voltages can be transformed up or down. If the transformer is not used for energy transmission, as in the present example, but for analog information transmission, the transformer is called transformer. There is also the possibility that the transmitter is used for the transmission of energy and signal transmission.
  • Both electronic components of isolation amplifiers, including the transformer are usually mounted on printed circuit boards, wherein the circuit board is arranged in an insulating material housing and equipped with screw-plug or spring connection technology.
  • the Isolierstoffgeophuse can be latched onto mounting rails according to EN 50 022 and thus mounted, for example, in cabinets. The space available in control cabinets is but limited. This limitation creates a need for development, the electronic components, including the insulating material of the isolation amplifier to minimize in size and cheaper to produce.
  • Such isolation amplifiers consist of a variety of electronic components.
  • An electronic component thereof is the transformer, which serves for the galvanic separation of the information signals. If there is no way to be able to flow from one circuit to another directly adjacent via the carrier, this is called galvanic isolation of the two circuits.
  • the exchange of information between galvanically isolated circuits is possible through the transformer.
  • the transformer consists for example of a toroidal core, for example of soft magnetic material, which is surrounded by at least two windings of insulated conductor wire.
  • the difficulty is to mount the transformer quickly, inexpensively and space-saving on a circuit board, such as an isolation amplifier.
  • the installation of a transformer on a printed circuit board therefore places high demands on the assembly technology.
  • the DE 203 09 843 U1 suggests, therefore, to use a processable in SMD assembly technology transformer, which has a toroidal core with arranged Abstützsch, whereby the carrier plate is omitted and the toroidal core is mounted directly on the circuit board.
  • This Construction is the height reduced by eliminating the Träperplatte, but the main drawback is still that the toroidal core of the transformer is arranged perpendicular to the circuit board and thus results in a too large height.
  • DE 33 18 557 A1 shows a construction arrangement in a horizontal version, which is suitable for use on printed circuit boards. A reduction in the height is not possible here.
  • the DE 196 15 921 A1 describes a construction in which a recess in the circuit board for receiving a toroidal core is included. This results in a low overall height, which would be suitable for use in isolation amplifiers.
  • the big disadvantage is that the assembly of the inductive component in a flat design is not suitable for SMD mounting technology and thus not for high volumes in production. This construction also does not meet the high demands on the clearances and creepage distances of the EX standard.
  • the WO 88/07257 A discloses a high-frequency device having at least one ring core and a elastic carrier, wherein the carrier has recesses for the toroidal core. Closed and connected by bridges interconnects on the top and bottom of the carrier form the windings around the toroidal core. There are two coils each, one primary and one secondary, around each toroidal core, with the toroidal core accomplishing the coupling between the two coils. By contacting points and superficially mounted components, the tracks of the windings can be connected to other elements.
  • the DE 33 22 004 A1 discloses an inductive element having a closed ferrite core and at least one coil mounted on an insulating support in the form of printed circuit traces.
  • the insulating support has recesses adapted to the cross section of the ferrite core for receiving the core and slots opening into the recesses and intersecting the conductor tracks for insertion of the core into the recesses.
  • the invention is therefore an object of the invention to provide an inductive component or a transformer for buffer amplifier of the type mentioned above, which avoids the aforementioned disadvantages of the known arrangements and to provide a technical solution that allows a low-cost equipped with simple functional geometry transformer for Isolation amplifier produce, which has a low profile and in SMD assembly technology on PCBs can be mounted and yet meets the high demands on the creepage distances and creepage distances of the EX standard.
  • the invention proposes to produce a buffer amplifier, in its circuit board an opening in a first embodiment for a separate integrable component of a transformer contains, wherein the component is a functional part in the construction of the isolation amplifier.
  • the separate integratable component is preassembled and only after assembly with the circuit board of the isolation amplifier is a transformer.
  • the transformer is completed only by the fact that the short-circuit windings are closed during soldering. At least a portion of the shorting windings are located on the motherboard or printed circuit board, which may be planar shorted windings. Alternatively, this can be done beforehand by a separate solder bridge.
  • the transmission of analog signals in industrial environments is particularly susceptible to interference.
  • the modular converters for measurement and control technology avoid the falsification of analog signals due to external disturbances. They ensure and increase the transmission quality and thus the quality of control loops through the exact conversion, separation or adaptation of analogue signals.
  • To meet this quality standard or the corresponding standards in reducing the size of isolation amplifiers it is necessary to develop a transformer component, which meets the above requirements and in the opening of the circuit board and thus in the narrow insulating material of the isolation amplifier easily with the help of SMD assembly technology can be integrated.
  • the technical solution lies in the interconnection of two or more conventionally wound ring cores to a transformer with primary winding and one or more secondary windings, wherein the interconnection of the inductive components can be done in series or parallel connection.
  • the primary, and wound on the second ring core the secondary coil in the simplest stage of expansion on the first ring core.
  • Both completed magnetic cores are mounted on a one-piece substrate, which has one or more tracks in the inner layer.
  • the assembly can also be done with the help of an SMD placement machine.
  • the conductor ends of the windings are connected to the Anwickelzonen the contact bearing surfaces wound. About the contact pads, the electrical contact is made to the example drive circuit.
  • the Anwickelzonen arranged on the connecting arms of the substrate are recessed in the circuit board of the isolation amplifier, so that the complete or prefabricated component of the transformer can rest flat on the circuit board and thus SMD-friendly.
  • a vacuum suction device suck the component, transport, position over the circuit board and store.
  • the tracks of the substrate via the contact surfaces for example by tinning, connected to form a complete winding, which represent both the output winding of the inductive primary component, as well as the input winding of the inductive secondary component.
  • the material of the substrate is by its construction, the insulation between the windings.
  • the inner conductor tracks are surrounded with at least 0.5 mm of insulating material.
  • the high demands on EX protected products in terms of insulation can be realized.
  • the distances required for the EX area, as well as the clearances and creepage distances for safe galvanic separation of the primary and secondary windings are fixed by the center bar and the distance of the strip conductors in the middle layers to the substrate edge.
  • two or more short-circuit windings can be realized, wherein the short-circuit windings can be distributed uniformly on both sides of the inductive components, which simultaneously leads to an improved coupling of the inductive components.
  • a transformer 1 integrated in an opening 22 of a printed circuit board 20 is shown schematically, wherein the transformer 1 consists of a component 2 with a magnetic core 4,4 'made of a soft magnetic material having a center hole (not shown), through the one or a plurality of windings 6, 6 'are made of insulated wire 7 and have a substrate 10 with internal conductor tracks 11, which carries one or more completed magnetic cores 4, 4' with 6, 6 ', with one or more webs 12, 12', in which one or more internal conductor tracks 11, are arranged, as well as with one or more connecting arms 13, consisting of a contact bearing surface 14, on the front side 48 and on the bottom 49 for connecting the inductive components 3,3 'with the on Printed circuit board 20 arranged electronic components (not shown) is metallized and with a metallized terminal winding zone 15 for fixing the initial 16 and end winding 17 of the winding 6, 6 'exists, whereby the component 2 results in a miniaturized SMD mounting technology-capable electronic component
  • the substrate 10 is planar.
  • the planar substrate 10 includes an area 18 for the suction pipette (not shown) for mounting to the circuit board 20.
  • the suction pipette grips the component 2 of the transformer 1 on the surface 18 and transports the component 2 for mounting in the printed circuit board opening 22, in which the component 2 is integrated and connected to the printed circuit board 20 via the metallized contact bearing surfaces 14, for example by soldering, bonding, etc.
  • the cutout 23 of the printed circuit board opening 22 is designed such that after assembly of the component 2, the two inductive components 3, 3 'are fixed in the conductor opening 22 so that no possibility of lateral displacement of the inductive components 3, 3' to the outside is possible , A displacement of the two inductive components 3, 3 'inwards, toward the middle of the substrate, is likewise not possible due to the limitation or the bridge end. Furthermore, the planar substrate 10 in the middle and longitudinal direction of the substrate 10 on the same central axis extending two webs 12,12 'extending from each other in the opposite direction, are pushed onto the wound ring cores. There are also construction versions in which the installation can be done by a SMD placement machine. The substrate 10 is thus prefabricatable.
  • the inductive component 3 thus consists of a magnetic core 4 with a primary coil 6 and the inductive component 3 'of a magnetic core 4' with a secondary coil 6 ', wherein the magnetic cores 4,4'aus Ringkemen 8,8' are formed.
  • the magnetic cores 4, 4 ' can alternatively also be embodied as rectangular ferrite cores.
  • the two other printed conductors 24, 25 arranged in the substrate 10 extend outside of the inductive components 3, 3 '.
  • the conductor tracks 11, 24, 25 exit at the end faces 31, 31 'of the substrate 10 and are connected there, on the printed circuit board 20, for example by soldering, whereby windings result.
  • Fig.1 shown in the substrate 10 three interconnects 11,24,25 connected to each other, resulting in two windings 32,37.
  • Each of these windings 32 and 37 forms a planar short-circuit winding 33 which couples the primary winding 6 to the secondary winding 6 '.
  • the conductor tracks 11, 24, 25 running in the substrate 10, which make the coupling of the two inductive components 3, 3 'to one another, are surrounded by at least 0.5 mm insulating material 35 and have an edge distance in accordance with the specifications of the EN 50020 and EN standards 50014, whereby the component 2 of the transformer 1 complies with the requirements of intrinsic safety.
  • the in Fig.2 illustrated transformer 1 provides an alternative arrangement of a construction, which is also prefabricated, too Fig.1
  • An SMD-capable assembly is possible if at the top of the circular spacer sleeve 27, a small flat surface (not shown) is arranged for the suction pipette.
  • the web 12 in the substrate 10 is not as in the arrangement of the construction after Fig.1 accessible from two sides, from which two webs 12,12'er, but only from one side, resulting in a longer web 12 results.
  • the web 12 is therefore carrier two inductive components 3,3 '.
  • the inductive components 3, 3 ' are arranged one behind the other and spaced apart by an element 26.
  • the element 26 is preferably a spacer sleeve 27 and is made of insulating material 34 and is pushed onto the web 12 during assembly between the two inductive components 3, 3 '. With a surface (flattening not shown) on the spacer sleeve 27, the assembly can be done by a pick and place machine.
  • the distance between the two inductive components 3,3 ' can be adjusted by different lengths of the spacer sleeve 27 to a variety of standards specifications, not only to the EX standard.
  • the two inductive components 3,3 ' are as in Fig.1 described with two planar windings 32,37 via the interconnects 11,24,25 coupled together, resulting in two short-circuit windings 33.
  • the track 11,24,25 as in Fig.2 also represented by two interconnects 11, 29 which run parallel to each other in a small distance and conductor tracks 24, 29 and interconnects 25, 29 for coupling the two inductive components 3, 3 '.
  • the other characteristics of this component 2 correspond to those as in Fig.1 described, for example, the connecting arms 13th
  • Figure 3 shows a further arrangement of a construction of a transformer 1.
  • the component 2 of the transformer 1 corresponds in the imaginary line of the outer contour 39 in approximately a symmetrical hexagon 40, with three, spaced apart at intervals of 120 degrees cutouts 41.
  • In the center line of these cutouts 41 is in each case an outwardly vertically directed web 12,12 'is arranged, which serves to receive an inductive component 3,3'.
  • On the two inner sides 42,42 'of the cutouts 41, which run parallel to each other, follow connecting arms 13,13', which also extend parallel to the web 12 and as shown Fig.1 are formed with contact surfaces 14 and terminal winding zones 15.
  • This distance "X” ensures the necessary separation between two galvanically separated areas for the type of protection "intrinsic safety" of the transformer 1 and thus meets the criteria of standard EN 50020.
  • This component 2 is completed with three inductive components 3,3 ', of which an inductive Component 3 with a primary winding 4 and two arranged in parallel thereto inductive components 3 'with a secondary winding 4' is equipped.
  • the transmitter 1 can be sucked in the center of the substrate 10 with a suction pipette (not shown) and can be equipped with an SMD placement machine 21 in accordance with the SMD.
  • a suction pipette (not shown)
  • an SMD placement machine 21 for equipping the substrate 10 with the primary inductive component 3, a web 12 and / or a connecting arm 13 with an identification code "1", for example in the form of a pin number 44, characterized.
  • the designation "1" also allows for the assembly of the component 2 in the opening 22 of the circuit board 20 a secure alignment of the component 2 by the SMD placement machine 21. After the insertion of the input-side inductor 3 with the primary winding 6 on the web 12th takes place the loading of the other webs 12 'with the two output-side inductive components 3' with the secondary winding 6 '.
  • the webs 12,12'und the substrate 10 are with continuous internal conductor tracks 11, as shown Fig.1 known, trained.
  • the interconnects 11 may be one or more interconnects 11.
  • the peculiarity of the tracks 11,29 is that the tracks 11,29 after the primary input side 46 in two directions 45,45'zur Fork with the two secondary output sides 47,47'.
  • the short-circuit windings are completed only by, for example, soldering on the circuit board 20.
  • the other characteristics of this component 2 correspond to those as in Fig.1 described, for example, the connecting arms 13th
  • the Figure 4 shows that after Fig.1 in the printed circuit board 20 integrated transformer 1 with the component 2 in side view, from which the low height "Y" equal to less than 4.6 mm is clearly visible.
  • the height "Y” is determined by the magnetic core 4 and the winding 6.
  • the conductor tracks 11 located in the substrate 10 are connected to one another at the end face 31 of the substrate 10.
  • this component 2 The other characteristics of this component 2 are the same as in Fig.1 described, for example, the connecting arms 13th ⁇ U> REFERENCE LIST ⁇ / u> 1 exchangers 25 conductor path 2 component 26 element 3 Inductive component (primary) 27 Stand Off 3 ' Inductive component (secondary) 28 Free 4 Magnetic core (primary) 29 printed circuit 4 ' Magnetic core (secondary) 30 face 31 face 6 Winding (primary) 31 ' face 6 ' Winding (secondary) 32 Winding I 7 insulated wire 33 Short circuit winding 8th toroidal 34 material 8th' toroidal 35 insulating material 9 Free 36 height 10 substratum 37 Winding II 11 conductor path 38 Free 12 web 39 outer contour 12 ' web 40 hexagon 13 connector arm 41 neckline 13 ' connector arm 42 inside 14 Contact support surface 42 ' inside 14 ' Contact support surface 43 Free 15 Connection winding zone 44 Pin 15 ' Connection winding zone 45 direction 16 initial turn 45 ' direction 17 end turn 46 input side 18 area 47 output side 48 front 20 circuit board 49 bottom 21

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP06791723.7A 2005-08-30 2006-08-30 Übertrager Active EP1922738B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005041131A DE102005041131B4 (de) 2005-08-30 2005-08-30 Übertrager
PCT/EP2006/008461 WO2007025725A1 (de) 2005-08-30 2006-08-30 Übertrager

Publications (2)

Publication Number Publication Date
EP1922738A1 EP1922738A1 (de) 2008-05-21
EP1922738B1 true EP1922738B1 (de) 2014-08-27

Family

ID=37441618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06791723.7A Active EP1922738B1 (de) 2005-08-30 2006-08-30 Übertrager

Country Status (6)

Country Link
US (1) US7667563B2 (ja)
EP (1) EP1922738B1 (ja)
JP (1) JP4875706B2 (ja)
CN (1) CN101300649B (ja)
DE (1) DE102005041131B4 (ja)
WO (1) WO2007025725A1 (ja)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE60140865D1 (de) 2000-03-27 2010-02-04 Univ Jefferson Zusammensetzungen und methoden zur identifizierung von krebszellen
WO2008080820A1 (en) * 2006-12-28 2008-07-10 Abb Technology Ltd Power transformer/reactor
WO2009124560A1 (de) * 2008-04-08 2009-10-15 Siemens Aktiengesellschaft Kommunikationsgerät und netzwerk
DE102009037340A1 (de) 2009-08-14 2011-08-04 Phoenix Contact GmbH & Co. KG, 32825 Übertrager
DE102012016568A1 (de) 2012-08-22 2014-02-27 Phoenix Contact Gmbh & Co. Kg Planarer Übertrager mit Schichtaufbau
US9508484B2 (en) 2012-02-22 2016-11-29 Phoenix Contact Gmbh & Co. Kg Planar transmitter with a layered structure
DE102012003364A1 (de) 2012-02-22 2013-08-22 Phoenix Contact Gmbh & Co. Kg Planarer Übertrager
DE102012003365B4 (de) 2012-02-22 2014-12-18 Phoenix Contact Gmbh & Co. Kg Planarer eigensicherer Übertrager mit Schichtaufbau
DE102012016570A1 (de) 2012-08-22 2014-02-27 Phoenix Contact Gmbh & Co. Kg Planarer Übertrager
DE102012111069A1 (de) 2012-11-16 2014-05-22 Phoenix Contact Gmbh & Co. Kg Planarübertrager
US9865387B2 (en) * 2015-12-02 2018-01-09 Intel IP Corporation Electronic package with coil formed on core
CN115631923B (zh) * 2022-10-19 2023-10-31 江苏瑞恩电气有限公司 一种防护效果好的新能效节能干式变压器

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Also Published As

Publication number Publication date
JP2009510717A (ja) 2009-03-12
JP4875706B2 (ja) 2012-02-15
EP1922738A1 (de) 2008-05-21
CN101300649B (zh) 2012-06-27
WO2007025725A1 (de) 2007-03-08
US20080246575A1 (en) 2008-10-09
DE102005041131B4 (de) 2008-01-31
US7667563B2 (en) 2010-02-23
DE102005041131A1 (de) 2007-05-31
CN101300649A (zh) 2008-11-05

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