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EP2780918B1 - Induction component - Google Patents

Induction component Download PDF

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Publication number
EP2780918B1
EP2780918B1 EP12772290.8A EP12772290A EP2780918B1 EP 2780918 B1 EP2780918 B1 EP 2780918B1 EP 12772290 A EP12772290 A EP 12772290A EP 2780918 B1 EP2780918 B1 EP 2780918B1
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EP
European Patent Office
Prior art keywords
coils
coil
induction component
winding
component according
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EP12772290.8A
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German (de)
French (fr)
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EP2780918A1 (en
Inventor
Dragan Dinulovic
Alexander Gerfer
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Wuerth Elektronik Eisos GmbH and Co KG
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Wuerth Elektronik Eisos GmbH and Co KG
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Publication of EP2780918A1 publication Critical patent/EP2780918A1/en
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    • 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
    • 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
    • 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
    • H01F27/2895—Windings disposed upon ring cores

Definitions

  • the invention relates to an induction component.
  • induction components With the constantly increasing switching frequency of electrical power circuits and controllers, new induction components are always required. These should primarily have a smaller inductance, for example in the switching frequency range between 10 MHz and 30 MHz an inductance between 100 nH and 300 nH for transformers and between 20 nH and 200 nH for inductors. In addition, these induction components should also have a smaller size.
  • An induction component is already known that can be used both as an inductor and as a micro-transformer ( EP 1178504 A1 ).
  • microtransformer in which individual turns of a conductor are arranged around an inner magnetic layer ( US 5976715 A ).
  • a microtransformer which has a primary winding and a plurality of secondary windings on a magnetic core.
  • the several secondary windings have their own connections ( US 2005/0017054 A1 ).
  • the invention is based on the object of creating an induction component which offers a large number of different possible uses while requiring little space.
  • the invention proposes an induction component with the features mentioned in claim 1. Further training is the subject of subclaims.
  • the induction component By providing two coil devices, which are arranged on a common magnetic core, it is possible to use the induction component as a transformer. It is possible to select whether on the primary side as well as on the secondary side whether one or both coils of each coil device are used. This enables a transmission of 1: 1, 1: 2, 2: 1, 2: 2. If each coil device is made up of more than two coils, the number of possibilities is correspondingly greater.
  • the induction component can also be used to represent an inductance with four different values, depending on how many of the existing coils are connected in series.
  • Another advantage of the induction component proposed by the invention is that larger switching frequency ranges can be achieved with only one component can cover or that a component can be used for a wider range. If, for example, 3 coils are required for a switching frequency of 10 MHz, but only one coil is required for 20 MHz, this can be achieved with a single component. In this way, the selection of components is made easier for the user, procurement costs are reduced and the range of inductance values to be maintained becomes smaller.
  • the profile size of such an induction component should, for example, be in a range from 0.5 to 0.3 mm or less.
  • the sizes 1008, 0805, 0603, 0402, or 0201 can be mentioned as an example of the size of such components.
  • the adjacent winding ends of two adjacent coils are connected to a common solder pad. This simplifies the interconnection of the individual coils and also the production, since the component in the example mentioned has only six soldering pads with two coil devices of two coils each.
  • the ring has a rectangular shape and each of the two coil devices is formed on one leg of the rectangle.
  • the invention proposes to produce the coils and their turns in a thin-film process.
  • the individual conductor tracks of the turns are produced by a combination of sputtering and electroplating.
  • the coils are produced by electroplating copper.
  • the magnetic core is produced by depositing soft magnetic material, for example Ni, NiFe, CoFe, CoZrTi.
  • the desired inductance to be produced can be set by the number of turns and the selection of the material of the magnetic core.
  • the Figure 1 shows the top view of the induction component.
  • it contains a magnetic core 1.
  • This has the shape of a rectangular ring, with two legs 2 running in the longitudinal direction and two cross legs 3 connecting them
  • a plurality of coils 4 are arranged around each longitudinal leg 2, all coils 4, 5 of a longitudinal leg 2 forming a coil device 6.
  • the expression that the coils 4, 5 are wound can only be understood in terms of their function, since the coils are produced using the thin-film process, that is to say are not wound. This method of manufacturing coils is known per se.
  • Each coil 4 has a winding start 7 and a winding end 8. All coils 4 are wound in the same direction, that is, they have the same winding sense. All coils 4 have the same number of turns. The coils 4 are arranged one behind the other in the longitudinal direction of the leg 2 and have a certain distance between them. The beginning of the winding 7 of the leftmost coil 4 is led out and connected to a solder pad 9. The winding end 8 of this coil is also led out and connected to a solder pad 9. The beginning of the winding 7 of the second coil is also connected to the same soldering pad 9. Its winding end 8 is in turn connected to a solder pad 9, to which the winding start 7 of the third coil is also connected.
  • the induction component of the Figure 1 has a total of 8 connections.
  • the induction component can be used as a transformer due to the division into 2 coil devices that are not electrically connected to one another.
  • the following transmission ratios are possible: 1: 1, 1: 2, 1: 3; 2: 1, 2: 2, 2: 3; 3: 1, 3: 2, 3: 3.
  • the induction component as an inductor
  • using a series connection multiple coils can use both 4 and 5. It is therefore possible to implement an inductance with the inductance value of a coil up to the inductance value of 6 coils.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)

Description

Die Erfindung betrifft ein Induktionsbauteil.The invention relates to an induction component.

Mit ständig steigender Schaltfrequenz elektrischer Leistungsschaltungen und Controllern werden auch immer neue Induktionsbauteile benötigt. Diese sollen in erster Linie eine kleinere Induktivität aufweisen, beispielsweise im Schaltfrequenzbereich zwischen 10 MHz und 30 MHz eine Induktivität zwischen 100 nH und 300 nH für Transformatoren und zwischen 20 nH und 200 nH für Induktivitäten. Darüber hinaus sollen diese Induktionsbauteile auch eine kleinere Größe aufweisen.With the constantly increasing switching frequency of electrical power circuits and controllers, new induction components are always required. These should primarily have a smaller inductance, for example in the switching frequency range between 10 MHz and 30 MHz an inductance between 100 nH and 300 nH for transformers and between 20 nH and 200 nH for inductors. In addition, these induction components should also have a smaller size.

Es ist bereits ein Induktionsbauteil bekannt, dass sowohl als Induktivität als auch als Mikro- Transformator verwendet werden kann ( EP 1178504 A1 ).An induction component is already known that can be used both as an inductor and as a micro-transformer ( EP 1178504 A1 ).

Weiterhin ist ein Mikrotransformator bekannt, bei dem einzelnen Windungen eines Leiters um eine magnetische Innenlage herum angeordnet werden ( US 5976715 A ).Furthermore, a microtransformer is known in which individual turns of a conductor are arranged around an inner magnetic layer ( US 5976715 A ).

Es ist bereits ein Mikrotransformator bekannt, der auf einem Magnetkern eine Primärwicklung und mehrere Sekundärwicklungen aufweist. Die mehreren Sekundärwicklungen haben eigene herausgeführte Anschlüsse ( US 2005/0017054 A1 ).A microtransformer is already known which has a primary winding and a plurality of secondary windings on a magnetic core. The several secondary windings have their own connections ( US 2005/0017054 A1 ).

Weiterhin bekannt ist ein Leistungsübertrager mit einer festen Primärwicklung und einer Sekundärwicklung, die eine Reihe von möglichen Zusammenschaltungen einzelner Wicklungen vorverdrahtet anbietet. Die einzelnen Wicklungen der Sekundärwicklung sind nicht direkt anschließbar ( WO 92/04723 ).Also known is a power transformer with a fixed primary winding and a secondary winding, which offers a number of possible interconnections of individual windings prewired. The individual windings of the secondary winding cannot be connected directly ( WO 92/04723 ).

Bei einem nochmals weiteren bekannten Induktionsbauteil sind auf einem ringförmigen Kern drei Wicklungen vorhanden, deren Wicklungsenden zu einem Anschlussbauteil geführt werden, von dem aus die Wicklungen angesprochen werden können ( WO 2008/059392 A1 ).In yet another known induction component, three windings are present on an annular core, the winding ends of which are led to a connection component from which the windings can be addressed ( WO 2008/059392 A1 ).

Der Erfindung liegt die Aufgabe zu Grunde, ein Induktionsbauteil zu schaffen, das bei geringem Platzbedarf eine Vielzahl von verschiedenen Anwendungsmöglichkeiten bietet.The invention is based on the object of creating an induction component which offers a large number of different possible uses while requiring little space.

Zur Lösung dieser Aufgabe schlägt die Erfindung ein Induktionsbauteil mit den im Anspruch 1 genannten Merkmalen vor. Weiterbildungen sind Gegenstand von Unteransprüchen.To achieve this object, the invention proposes an induction component with the features mentioned in claim 1. Further training is the subject of subclaims.

Durch das Vorsehen zweier Spuleneinrichtungen, die auf einem gemeinsamen Magnetkern angeordnet sind, ist es möglich, das Induktionsbauteil als Übertrager zu verwenden. Dabei ist es möglich, sowohl auf der Primärseite als auch auf der Sekundärseite auszuwählen, ob man eine oder beide Spulen jeder Spuleneinrichtung verwendet. Dadurch ist eine Übertragung von 1:1, 1:2, 2:1, 2:2 möglich. Wenn man jede Spuleneinrichtung aus mehr als zwei Spulen bestehen lässt, ist die Zahl der Möglichkeiten entsprechend größer.By providing two coil devices, which are arranged on a common magnetic core, it is possible to use the induction component as a transformer. It is possible to select whether on the primary side as well as on the secondary side whether one or both coils of each coil device are used. This enables a transmission of 1: 1, 1: 2, 2: 1, 2: 2. If each coil device is made up of more than two coils, the number of possibilities is correspondingly greater.

Bei dem einfachsten Beispiel mit zwei Spuleneinrichtungen, die jeweils aus zwei benachbarten Spulen bestehen, kann man das Induktionsbauteil auch zum Darstellen einer Induktivität mit vier verschiedenen Werten verwenden, je nachdem, wie viele der vorhandenen Spulen man hintereinander schaltet.In the simplest example with two coil devices, each consisting of two adjacent coils, the induction component can also be used to represent an inductance with four different values, depending on how many of the existing coils are connected in series.

Man hat also ein Induktionsbauteil geschaffen, das in dem gerade abgehandelten Beispiel acht verschiedene Anwendungsmöglichkeiten bietet.An induction component has therefore been created which offers eight different possible uses in the example just dealt with.

Ein weiterer Vorteil des von der Erfindung vorgeschlagenen Induktionsbauteils liegt darin, dass man mit nur einem Bauteil größere Schaltfrequenzbereiche abdecken kann bzw. dass ein Bauteil für eine größere Bandbreite eingesetzt werden kann. Wenn beispielsweise für eine Schaltfrequenz von 10 MHz 3 Spulen benötigt werden, für 20 MHz aber nur noch eine Spule benötigt wird, so kann dies mit einem einzigen Bauteil erreicht werden. Auf diese Weise wird die Bauteileauswahl für den Anwender erleichtert, Beschaffungskosten reduziert und das Spektrum von vorzuhaltenden Induktivitätswerten wird kleiner.Another advantage of the induction component proposed by the invention is that larger switching frequency ranges can be achieved with only one component can cover or that a component can be used for a wider range. If, for example, 3 coils are required for a switching frequency of 10 MHz, but only one coil is required for 20 MHz, this can be achieved with a single component. In this way, the selection of components is made easier for the user, procurement costs are reduced and the range of inductance values to be maintained becomes smaller.

Die Profilgröße eines solchen Induktionsbauteils soll beispielsweise in einem Bereich von 0.5 bis 0.3 mm oder darunter liegen können.The profile size of such an induction component should, for example, be in a range from 0.5 to 0.3 mm or less.

Als Beispiel für die Größe solcher Bauteile können die Größen 1008, 0805, 0603, 0402, oder 0201 genannt werden.The sizes 1008, 0805, 0603, 0402, or 0201 can be mentioned as an example of the size of such components.

In Weiterbildung der Erfindung kann vorgesehen sein, dass die benachbarten Wicklungsenden jeweils zweier benachbarter Spulen mit einem gemeinsamen Lötpad verbunden sind. Damit vereinfacht sich die Zusammenschaltung der einzelnen Spulen und auch die Herstellung, da das Bauteil in dem erwähnten Beispiel mit zwei Spuleneinrichtungen von jeweils zwei Spulen nur sechs Lötpads aufweist.In a development of the invention it can be provided that the adjacent winding ends of two adjacent coils are connected to a common solder pad. This simplifies the interconnection of the individual coils and also the production, since the component in the example mentioned has only six soldering pads with two coil devices of two coils each.

Insbesondere kann in Weiterbildung der Erfindung vorgesehen sein, dass der Ring Rechteckform aufweist und jede der beiden Spuleneinrichtungen an jeweils einem Schenkel des Rechtecks ausgebildet ist.In particular, it can be provided in a further development of the invention that the ring has a rectangular shape and each of the two coil devices is formed on one leg of the rectangle.

In Weiterbildung der Erfindung kann vorgesehen sein, dass alle Spulen einer Spuleneinrichtung den gleichen Windungssinn aufweisen. Dabei ist es auch möglich, dass der Windungssinn in beiden Spuleneinrichtungen identisch ist.In a further development of the invention it can be provided that all coils of a coil device have the same winding sense. It is also possible that the sense of turn is identical in both coil devices.

Obwohl es denkbar ist, dass die Zahl der Windungen bei jeder Spule und bei jeder Spuleneinrichtung unterschiedlich ist, kann erfindungsgemäß in Weiterbildung vorgesehen sein, dass alle Spulen einer Spuleneinrichtung die gleiche Windungszahl aufweisen, wobei insbesondere dies auch für die Spuleneinrichtungen untereinander gelten kann.Although it is conceivable that the number of turns for each coil and for each coil device is different, in a further development according to the invention it can be provided that all coils of one coil device have the same number of turns, which in particular can also apply to the coil devices among one another.

Was für die Windungszahl und den Windungssinn gesagt wurde, kann in Weiterbildung der Erfindung auch für den Querschnitt der die Spulen bildenden elektrischen Leiter gelten.What has been said for the number of turns and the sense of turns can also apply to the cross section of the electrical conductors forming the coils in a development of the invention.

Die Erfindung schlägt vor, die Spulen und ihre Windungen in einem Dünnschichtverfahren herzustellen. Die einzelnen Leiterbahnen der Windungen werden durch eine Kombination von Sputtern und Elektroplatieren hergestellt. Insbesondere wird vorgesehen, dass die Spulen durch Elektroplatieren von Kupfer hergestellt werden.The invention proposes to produce the coils and their turns in a thin-film process. The individual conductor tracks of the turns are produced by a combination of sputtering and electroplating. In particular, it is provided that the coils are produced by electroplating copper.

Der Magnetkern wird durch Ablagern weichen magnetischen Materials hergestellt, beispielsweise Ni, NiFe, CoFe, CoZrTi.The magnetic core is produced by depositing soft magnetic material, for example Ni, NiFe, CoFe, CoZrTi.

Die gewünschte herzustellende Induktivität kann durch die Zahl der Windungen und die Auswahl des Materials des magnetischen Kerns eingestellt werden.The desired inductance to be produced can be set by the number of turns and the selection of the material of the magnetic core.

Weitere Merkmale, Einzelheiten und Vorzüge der Erfindung ergeben sich aus den Ansprüchen und der Zusammenfassung, deren beider Wortlaut durch Bezugnahme zum Inhalt der Beschreibung gemacht wird, der folgenden Beschreibung bevorzugter Ausführungsformen der Erfindung sowie anhand der Zeichnung. Hierbei zeigen:

Figur 1
schematisch die Darstellung eines möglichen Induktionsbauteils nach der Erfindung.
Further features, details and advantages of the invention result from the claims and the abstract, the wording of both of which is made by reference to the content of the description, the following description of preferred embodiments of the invention and with reference to the drawing. Here show:
Figure 1
schematically the representation of a possible induction component according to the invention.

Die Figur 1 zeigt die Draufsicht auf das Induktionsbauteil. Es enthält in der dargestellten Ausführungsform einen Magnetkern 1. Dieser weist die Form eines rechteckigen Rings auf, mit zwei in Längsrichtung verlaufenden Schenkeln 2 und zwei diese verbindenden Querschenkeln 3. Um jeden Längsschenkel 2 sind mehrere Spulen 4 herum angeordnet, wobei alle Spulen 4, 5 eines Längsschenkels 2 eine Spuleneinrichtung 6 bilden. Der Ausdruck, dass die Spulen 4, 5 gewickelt sind, ist nur in der Funktion zu verstehen, da die Spulen im Dünnschichtverfahren hergestellt, also nicht gewickelt werden. Dieses Verfahren zum Herstellen von Spulen ist an sich bekannt.The Figure 1 shows the top view of the induction component. In the embodiment shown, it contains a magnetic core 1. This has the shape of a rectangular ring, with two legs 2 running in the longitudinal direction and two cross legs 3 connecting them A plurality of coils 4 are arranged around each longitudinal leg 2, all coils 4, 5 of a longitudinal leg 2 forming a coil device 6. The expression that the coils 4, 5 are wound can only be understood in terms of their function, since the coils are produced using the thin-film process, that is to say are not wound. This method of manufacturing coils is known per se.

Jede Spule 4 hat einen Wicklungsanfang 7 und ein Wicklungsende 8. Alle Spulen 4 sind in der gleichen Richtung gewickelt, haben also den gleichen Windungssinn. Alle Spulen 4 haben die gleiche Anzahl von Windungen. Die Spulen 4 sind in Längsrichtung des Schenkels 2 hintereinander angeordnet und haben einen gewissen Abstand zwischen einander. Der Wicklungsanfang 7 der am weitesten links dargestellten Spule 4 ist herausgeführt und mit einem Lötpad 9 verbunden. Das Wicklungsende 8 dieser Spule ist ebenfalls herausgeführt und mit einem Lötpad 9 verbunden. Mit demselben Lötpad 9 ist auch der Wicklungsanfang 7 der zweiten Spule verbunden. Deren Wicklungsende 8 ist wiederum mit einem Lötpad 9 verbunden, mit dem auch der Wicklungsanfang 7 der dritten Spule verbunden ist.Each coil 4 has a winding start 7 and a winding end 8. All coils 4 are wound in the same direction, that is, they have the same winding sense. All coils 4 have the same number of turns. The coils 4 are arranged one behind the other in the longitudinal direction of the leg 2 and have a certain distance between them. The beginning of the winding 7 of the leftmost coil 4 is led out and connected to a solder pad 9. The winding end 8 of this coil is also led out and connected to a solder pad 9. The beginning of the winding 7 of the second coil is also connected to the same soldering pad 9. Its winding end 8 is in turn connected to a solder pad 9, to which the winding start 7 of the third coil is also connected.

Alles, was für die Spulen 4 der ersten Spuleneinrichtung 6 gesagt wurde, gilt auch für die zweite in Figur 1 unten dargestellte Spuleneinrichtung. Insbesondere können auch die Windungszahlen und der Windungssinn der Spulen untereinander gleich sein.Everything that has been said for the coils 4 of the first coil device 6 also applies to the second one in FIG Figure 1 coil device shown below. In particular, the number of turns and the sense of turn of the coils can also be identical to one another.

Das Induktionsbauteil der Figur 1 hat insgesamt 8 Anschlüsse. Durch die Aufteilung in 2 Spuleneinrichtungen, die elektrisch nicht miteinander verbunden sind, kann das Induktionsbauteil als Transformator verwendet werden. Es sind folgende Übertragungsverhältnisse möglich: 1:1, 1:2, 1:3; 2:1, 2:2, 2:3; 3:1, 3:2, 3:3.The induction component of the Figure 1 has a total of 8 connections. The induction component can be used as a transformer due to the division into 2 coil devices that are not electrically connected to one another. The following transmission ratios are possible: 1: 1, 1: 2, 1: 3; 2: 1, 2: 2, 2: 3; 3: 1, 3: 2, 3: 3.

Es ist aber auch möglich, das Induktionsbauteil als Induktivität zu verwenden, wobei man eine Hintereinanderschaltung mehrerer Spulen sowohl 4 als auch 5 verwenden kann. Es lässt sich also eine Induktivität mit dem Induktivitätswert einer Spule bis zu dem Induktivitätswert von 6 Spulen verwirklichen.However, it is also possible to use the induction component as an inductor, using a series connection multiple coils can use both 4 and 5. It is therefore possible to implement an inductance with the inductance value of a coil up to the inductance value of 6 coils.

Claims (7)

  1. Induction component, comprising
    1.1 a magnet core (1) in the form of a closed ring,
    1.2 at least two coil devices (6) on the core (1), which are not electrically connected to one another, of which
    1.3 each coil device (6) has at least two adjacent coils (4, 5), wherein
    1.4 each coil (4, 5) has a winding start (7) and a winding end (8), and
    1.5 the winding start (7) and the winding end (8) of each coil (4, 5) are guided outwards and connected to solder pads (9), wherein
    1.6 the adjacent winding starts (7) and winding ends (8) of in each case two adjacent coils (4; 5) are connected to a common solder pad (9).
  2. Induction component according to claim 1, wherein the ring is rectangular in shape and each of the two coil devices (6) is formed on a respective limb (2).
  3. Induction component according to any one of the preceding claims, wherein all of the coils (4, 5) of at least one coil device (6), preferably all of the coil devices (6), have the same winding sense.
  4. Induction component according to any one of the preceding claims, wherein all of the coils (4, 5) of at least one coil device (6), preferably all of the coil devices (6), have the same turns number.
  5. Induction component according to any one of the preceding claims, wherein all of the coils (4, 5) of at least one coil device (6), preferably all of the coil devices (6), have the same line cross section.
  6. Induction component according to any one of the preceding claims, wherein the turns of the coils (4, 5) are turns produced using thin film technology.
  7. Induction component according to any one of the preceding claims, wherein the magnet core (1) is a magnet core produced using thin film technology.
EP12772290.8A 2011-11-15 2012-10-04 Induction component Active EP2780918B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011086403A DE102011086403A1 (en) 2011-11-15 2011-11-15 inductance component
PCT/EP2012/069615 WO2013072135A1 (en) 2011-11-15 2012-10-04 Induction component

Publications (2)

Publication Number Publication Date
EP2780918A1 EP2780918A1 (en) 2014-09-24
EP2780918B1 true EP2780918B1 (en) 2019-12-18

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US (1) US10510475B2 (en)
EP (1) EP2780918B1 (en)
DE (1) DE102011086403A1 (en)
HK (1) HK1197313A1 (en)
WO (1) WO2013072135A1 (en)

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JP6819564B2 (en) * 2017-12-19 2021-01-27 三菱電機株式会社 Semiconductor devices and their manufacturing methods

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HK1197313A1 (en) 2015-01-09
CN104106117A (en) 2014-10-15
US10510475B2 (en) 2019-12-17
EP2780918A1 (en) 2014-09-24
DE102011086403A1 (en) 2013-05-16
US20140285300A1 (en) 2014-09-25
WO2013072135A1 (en) 2013-05-23

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