EP4356405A1 - Matrix transformer - Google Patents

Matrix transformer

Info

Publication number
EP4356405A1
EP4356405A1 EP22734878.6A EP22734878A EP4356405A1 EP 4356405 A1 EP4356405 A1 EP 4356405A1 EP 22734878 A EP22734878 A EP 22734878A EP 4356405 A1 EP4356405 A1 EP 4356405A1
Authority
EP
European Patent Office
Prior art keywords
magnetic
circuit board
printed circuit
matrix transformer
plates
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.)
Pending
Application number
EP22734878.6A
Other languages
German (de)
French (fr)
Inventor
Norbert Hees
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.)
Kostal Automobil Elektrik GmbH and Co KG
Original Assignee
Kostal Automobil Elektrik 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 Kostal Automobil Elektrik GmbH and Co KG filed Critical Kostal Automobil Elektrik GmbH and Co KG
Publication of EP4356405A1 publication Critical patent/EP4356405A1/en
Pending legal-status Critical Current

Links

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
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • 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
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being 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
    • H01F27/08—Cooling; Ventilating
    • H01F27/22—Cooling by heat conduction through solid or powdered fillings
    • 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
    • H01F27/24—Magnetic cores
    • 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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • 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
    • H01F27/2847—Sheets; Strips
    • 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
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H01F2027/065—Mounting on printed circuit boards
    • 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
    • H01F2027/2819—Planar transformers with printed windings, e.g. surrounded by two cores and to be mounted on printed circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F2038/006—Adaptations of transformers or inductances for specific applications or functions matrix transformer consisting of several interconnected individual transformers working as a whole

Definitions

  • the invention relates to a matrix transformer consisting of a body made of soft magnetic material, which forms a closed magnetic circuit through openings in at least one printed circuit board, the body having a plurality of magnet legs surrounded by current-conducting windings, the body having two parallel magnets on both sides of the printed circuit board Magnetic plates, which connects the magnet legs to one another, the windings each forming at least one magnetic field-free zone in the magnetic plates by a suitably selected winding direction.
  • Circuit board-integrated transformers are used to achieve flat designs and predictable heat dissipation. These consist of a flat, soft magnetic material, preferably ferrite, which forms a closed magnetic circuit through a number of openings in a printed circuit board, and windings formed by conductor tracks on the printed circuit board and enclosing the ferrite.
  • the windings can also be constructed using several printed circuit boards. Additional winding parts formed by electrical conductors can also be attached to this printed circuit board, which can be formed from wound wires or cut sheets, for example.
  • the windings formed by the conductor track structures are distributed over several magnet legs, which are arranged in a row and column structure. With a suitably selected direction of winding of the windings around the respective magnet legs, this arrangement forms a so-called matrix transformer.
  • a matrix transformer is described in the document US Pat. No. 4,665,357.
  • a matrix transformer has the advantage that the magnetic fluxes in it partially cancel each other out, so that the magnetic losses caused by alternating magnetic fields are also reduced.
  • a suitable arrangement of magnet legs and winding directions can be used to form at least one magnetic-field-free zone.
  • the task at hand was to achieve improved cooling and/or higher electrical power in a matrix transformer.
  • a recess is made in at least one magnetic plate within the magnetic field-free zone, through which a cooling pin connected to a heat sink is guided to a surface of the printed circuit board.
  • the invention is based on the finding that the magnetic field-free zone is not required for the function of the transformer, so that the magnetic material can be saved there and the possibility of coupling a heat sink to the transformer is thereby provided.
  • FIG. 1 shows a sectional view of a matrix transformer according to the invention
  • Figure 2 shows the basic structure of a matrix transformer
  • FIG. 3 shows the directions of flow of the matrix transformer according to Figure 2
  • FIG. 4 shows the design of a magnet plate with an opening for a cooling pin.
  • FIG. 1 The basic structure of a matrix transformer is shown schematically in FIG. This consists of a body 1 made of soft magnetic material, which forms a closed magnetic circuit through at least two openings in at least one printed circuit board.
  • FIG. 2 specifically shows four cylindrical magnet legs 2 made of a ferrite material, which are arranged next to one another in two rows and two columns, magnet legs 2 standing next to one another being at the same distance from one another.
  • the lower and upper end faces of the magnet legs 2 are each closed off by a magnet plate 5, 6.
  • One or more magnet legs 2 can also be made in one piece with one of the magnet plates 5, 6.
  • a plurality of turns 4 of an electrical conductor are indicated in each case around the magnet legs 2 . These turns 4 are formed by conductor tracks of a multi-layer printed circuit board.
  • the printed circuit board itself is not shown in FIG. 2 for clarity, but is shown in FIG. 1 as an object with reference number 3 .
  • FIG. 3 illustrates the current directions 7 in the windings around the magnet legs 2 by means of arrows drawn in, as well as the resulting magnetic flux directions 8. It can be seen that the windings around magnet legs 2 arranged adjacent to one another each have opposite current directions 7. This results in the indicated magnetic flux directions 8 in the edge areas of the upper magnetic plate 6 shown here as an example. In the central region 9 of the lower and upper magnetic plates 5, 6, the magnetic fluxes 8 largely cancel each other out, so that the central region 9 of the lower and upper magnetic plates 5, 6 is essentially free of magnetic fields. Since the respective middle area 9 of the magnet plates 5, 6 does not contribute to the function of the transformer, it can also be omitted without impairing the function of the transformer.
  • a cooling pin 12 can be inserted into this recess 10, which is connected in one piece to a solid heat sink 11 here, purely by way of example.
  • the cooling pin 12 is guided up to a surface of the printed circuit board 3 and forms a cooling surface 13 there. Since the cooling pin 12 is guided through a magnetic flux-free area of the magnetic plate 5, it can advantageously consist of a metal without further ado.
  • Magnetic flux direction middle area (magnetic field-free zone)

Landscapes

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

Abstract

The invention describes a matrix transformer, comprising a body which is composed of soft-magnetic material and forms a closed magnetic circuit through openings in at least one printed circuit board, wherein the body has a plurality of magnetic limbs which are surrounded by current-carrying turns, wherein the body has two parallel magnetic plates on either side of the printed circuit board, the magnetic limbs connecting said magnetic plates to one another, wherein the turns, owing to a suitably selected winding direction, each form at least one magnetic field-free zone in the magnetic plates, and wherein a recess is made within the magnetic field-free zone in at least one magnetic plate, a cooling pin which is connected to a heat sink being guided through said recess as far as a surface of the printed circuit board.

Description

Matrixtransformator matrix transformer
Die Erfindung betrifft einen Matrixtransformator, bestehend aus einem Körper aus weichmagnetischem Material, der durch Öffnungen in mindestens einer Leiterplatte hindurch einen geschlossenen magnetischen Kreis bildet, wobei der Körper mehrere Magnetschenkel aufweist, die von stromleitenden Windungen umschlossen sind, wobei der Körper zwei beidseitig zur Leiterplatte parallele Magnetplatten aufweist, welche die Magnetschenkel miteinander verbindet, wobei die Windungen durch einen passend gewählten Wicklungssinn jeweils mindestens eine magnetfeldfreie Zone in den Magnetplatten ausbilden. The invention relates to a matrix transformer consisting of a body made of soft magnetic material, which forms a closed magnetic circuit through openings in at least one printed circuit board, the body having a plurality of magnet legs surrounded by current-conducting windings, the body having two parallel magnets on both sides of the printed circuit board Magnetic plates, which connects the magnet legs to one another, the windings each forming at least one magnetic field-free zone in the magnetic plates by a suitably selected winding direction.
Um flache Bauformen und vorhersagbare Wärmeableitungen zu erreichen, werden leiterplattenintegrierte Transformatoren eingesetzt. Diese bestehen aus einem flachen weichmagnetischen Material, bevorzugt Ferrit, das durch mehrere Öffnungen einer Leiterplatte hindurch einen geschlossenen magnetischen Kreis bildet, sowie aus durch Leiterbahnen auf der Leiterplatte geformten, den Ferrit umschließenden Windungen. Circuit board-integrated transformers are used to achieve flat designs and predictable heat dissipation. These consist of a flat, soft magnetic material, preferably ferrite, which forms a closed magnetic circuit through a number of openings in a printed circuit board, and windings formed by conductor tracks on the printed circuit board and enclosing the ferrite.
Statt mit einer Leiterplatte können die Windungen auch mit mehreren Leiterplatten aufgebaut werden. Es können auch zusätzliche durch elektrische Leiter geformte Windungsteile auf dieser Leiterplatte angebracht werden, welche beispielsweise aus gewickelten Drähten oder geschnittenen Blechen geformt sein können. Instead of using a printed circuit board, the windings can also be constructed using several printed circuit boards. Additional winding parts formed by electrical conductors can also be attached to this printed circuit board, which can be formed from wound wires or cut sheets, for example.
Um die Anzahl der in der Leiterplatten benötigten Leiterschichten gering zu halten, werden die durch die Leiterbahnstrukturen geformten Windungen auf mehrere Magnetschenkel verteilt, die in einer zeilen- und spaltenförmigen Struktur angeordnet sind. Durch einen geeignet gewählten Wickelsinn der Windungen um die jeweiligen Magnetschenkel bildet diese Anordnung einen so genannten Matrixtransformator aus. Ein derartiger Matrixtransformator wird in dem Dokument US 4,665,357 A beschrieben. In order to keep the number of conductor layers required in the printed circuit board low, the windings formed by the conductor track structures are distributed over several magnet legs, which are arranged in a row and column structure. With a suitably selected direction of winding of the windings around the respective magnet legs, this arrangement forms a so-called matrix transformer. Such a matrix transformer is described in the document US Pat. No. 4,665,357.
Ein Matrixtransformator hat den Vorteil, dass sich in ihm die magnetischen Flüsse teilweise gegenseitig aufheben, und sich so die magnetischen Verluste, die durch magnetische Wechselfelder hervorgerufen werden, ebenfalls verringern. Dabei lässt sich durch eine geeignete Anordnung von Magnetschenkeln und Wickelrichtungen die Ausbildung mindestens einer magnetfeldfreien Zone erreichen. A matrix transformer has the advantage that the magnetic fluxes in it partially cancel each other out, so that the magnetic losses caused by alternating magnetic fields are also reduced. A suitable arrangement of magnet legs and winding directions can be used to form at least one magnetic-field-free zone.
Es stellte sich die Aufgabe, bei einem Matrixtransformator eine verbesserte Kühlung und/oder eine höhere elektrische Leistung zu erreichen. The task at hand was to achieve improved cooling and/or higher electrical power in a matrix transformer.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass in mindestens eine Magnetplatte innerhalb der magnetfeldfreien Zone eine Ausnehmung eingebracht ist, durch die hindurch ein mit einem Kühlkörper verbundener Kühlzapfen bis zu einer Oberfläche der Leiterplatte geführt ist. This object is achieved according to the invention in that a recess is made in at least one magnetic plate within the magnetic field-free zone, through which a cooling pin connected to a heat sink is guided to a surface of the printed circuit board.
Die Erfindung beruht auf der Erkenntnis, dass die magnetfeldfreien Zone für die Funktion des Transformators nicht benötigt wird, so dass dort das Magnetmaterial eingespart werden kann und dadurch die Möglichkeit zur Ankopplung eines Kühlkörpers an den Transformator gegeben ist. The invention is based on the finding that the magnetic field-free zone is not required for the function of the transformer, so that the magnetic material can be saved there and the possibility of coupling a heat sink to the transformer is thereby provided.
Nachfolgend soll die Erfindung anhand der Zeichnung näher dargestellt und erläutert werden. Es zeigen The invention is to be illustrated and explained in more detail below with reference to the drawing. Show it
Figur 1 eine Schnittansicht eines erfindungsgemäßen Matrixtransformators, FIG. 1 shows a sectional view of a matrix transformer according to the invention,
Figur 2 den prinzipiellen Aufbau eines Matrixtransformators, Figure 2 shows the basic structure of a matrix transformer,
Figur 3 die Flussrichtungen des Matrixtransformators gemäß der Figur 2, Figur 4 die Ausführung einer Magnetplatte mit einer Öffnung für einen Kühlzapfen. Figure 3 shows the directions of flow of the matrix transformer according to Figure 2, FIG. 4 shows the design of a magnet plate with an opening for a cooling pin.
Der prinzipielle Aufbau eines Matrixtransformators ist in der Figur 2 schematisch dargestellt. Dieser besteht aus einem Körper 1 aus weichmagnetischem Material, der durch mindestens zwei Öffnungen mindestens einer Leiterplatte hindurch einen geschlossenen magnetischen Kreis bildet. The basic structure of a matrix transformer is shown schematically in FIG. This consists of a body 1 made of soft magnetic material, which forms a closed magnetic circuit through at least two openings in at least one printed circuit board.
Die Figur 2 zeigt speziell vier zylinderförmige Magnetschenkel 2 aus einem Ferritmaterial, die nebeneinander in zwei Reihen und zwei Spalten angeordnet sind, wobei nebeneinander stehende Magnetschenkel 2 jeweils den gleichen Abstand zueinander aufweisen. Die unteren und oberen Stirnflächen der Magnetschenkel 2 werden jeweils durch eine Magnetplatte 5, 6 abgeschlossen. Hierbei können auch ein oder mehrere Magnetschenkel 2 mit einer der Magnetplatten 5, 6 einstückig ausgeführt sein. FIG. 2 specifically shows four cylindrical magnet legs 2 made of a ferrite material, which are arranged next to one another in two rows and two columns, magnet legs 2 standing next to one another being at the same distance from one another. The lower and upper end faces of the magnet legs 2 are each closed off by a magnet plate 5, 6. One or more magnet legs 2 can also be made in one piece with one of the magnet plates 5, 6.
Um die Magnetschenkel 2 herum sind jeweils mehrere Windungen 4 eines elektrischen Leiters andeutungsweise dargestellt. Diese Windungen 4 sind durch Leiterbahnen einer mehrlagigen Leiterplatte ausgebildet. Die Leiterplatte selbst ist zur deutlicheren Darstellung in der Figur 2 nicht eingezeichnet, dafür aber in der Figur 1 als Objekt mit dem Bezugszeichen 3 dargestellt. A plurality of turns 4 of an electrical conductor are indicated in each case around the magnet legs 2 . These turns 4 are formed by conductor tracks of a multi-layer printed circuit board. The printed circuit board itself is not shown in FIG. 2 for clarity, but is shown in FIG. 1 as an object with reference number 3 .
Die Figur 3 verdeutlicht durch eingezeichnete Pfeile die Stromrichtungen 7 in den Windungen um die Magnetschenkel 2, sowie auch die daraus resultierenden magnetischen Flussrichtungen 8. Erkennbar ist, dass die Windungen um zueinander benachbart angeordnete Magnetschenkel 2 jeweils entgegengesetzte Stromrichtungen 7 aufweisen. Daraus resultieren die eingezeichneten magnetisch Flussrichtungen 8 in den Randbereichen der hier beispielhaft dargestellten oberen Magnetplatte 6. Im mittleren Bereich 9 der unteren und der oberen Magnetplatte 5, 6 heben sich die Magnetflüsse 8 weitgehend auf, so dass der mittlere Bereich 9 der unteren und der oberen Magnetplatte 5, 6 im Wesentlichen frei von Magnetfeldern ist. Da somit der jeweils mittlere Bereich 9 der Magnetplatten 5, 6 keinen Beitrag zur Funktion des Transformators liefert, kann er auch weggelassen werden, ohne die Funktion des Transformators zu beeinträchtigen. FIG. 3 illustrates the current directions 7 in the windings around the magnet legs 2 by means of arrows drawn in, as well as the resulting magnetic flux directions 8. It can be seen that the windings around magnet legs 2 arranged adjacent to one another each have opposite current directions 7. This results in the indicated magnetic flux directions 8 in the edge areas of the upper magnetic plate 6 shown here as an example. In the central region 9 of the lower and upper magnetic plates 5, 6, the magnetic fluxes 8 largely cancel each other out, so that the central region 9 of the lower and upper magnetic plates 5, 6 is essentially free of magnetic fields. Since the respective middle area 9 of the magnet plates 5, 6 does not contribute to the function of the transformer, it can also be omitted without impairing the function of the transformer.
Dadurch wird es möglich, in die Mitte der unteren Magnetplatte 5 eine beispielsweise kreisrunde Ausnehmung 10 einzubringen, wie sie in der Figur 4 skizzenhaft dargestellt. Flierdurch wird vorteilhafterweise sowohl Ferritmaterial eingespart. This makes it possible to introduce a, for example, circular recess 10 in the center of the lower magnetic plate 5, as shown in sketch form in FIG. In this way, both ferrite material is advantageously saved.
Wie die Figur 1 zeigt, kann in diese Ausnehmung 10 ein Kühlzapfen 12 eingesetzt werden, der hier rein beispielhaft einstückig mit einem massiven Kühlkörper 11 verbunden ist. Der Kühlzapfen 12 ist bis zu einer Oberfläche der Leiterplatte 3 geführt und bildet dort eine Kühlfläche 13 aus. Da der Kühlzapfen 12 durch einen magnetflussfreien Bereich der Magnetplatte 5 geführt ist, kann dieser vorteilhafterweise ohne weiteres aus einem Metall bestehen. As FIG. 1 shows, a cooling pin 12 can be inserted into this recess 10, which is connected in one piece to a solid heat sink 11 here, purely by way of example. The cooling pin 12 is guided up to a surface of the printed circuit board 3 and forms a cooling surface 13 there. Since the cooling pin 12 is guided through a magnetic flux-free area of the magnetic plate 5, it can advantageously consist of a metal without further ado.
Auf diese Weise kann eine sehr effiziente Kühlung eines Matrixtransformators erreicht werden, durch die insbesondere auch eine Leistungserhöhung des Transformators möglich ist. In this way, a very efficient cooling of a matrix transformer can be achieved, which in particular also makes it possible to increase the power of the transformer.
Bezugszeichen Reference sign
(weichmagnetischer) Körper(soft magnetic) body
Magnetschenkel magnet leg
Leiterplatte circuit board
Windungen turns
(untere) Magnetplatte (lower) magnetic plate
(obere) Magnetplatte (upper) magnetic plate
Stromrichtungen current directions
Magnetflussrichtung mittlerer Bereich (magnetfeldfreie Zone)Magnetic flux direction middle area (magnetic field-free zone)
Ausnehmung recess
Kühlkörper heatsink
Kühlzapfen cooling spigot
Kühlfläche cooling surface

Claims

Patentansprüche patent claims
1. Matrixtransformator, bestehend aus einem Körper (1) aus weichmagnetischem Material, der durch Öffnungen in mindestens einer Leiterplatte (3) hindurch einen geschlossenen magnetischen Kreis bildet, wobei der Körper (1) mehrere Magnetschenkel (2) aufweist, die von stromleitenden Windungen (4) umschlossen sind, wobei der Körper (1) zwei beidseitig zur Leiterplatte (3) parallele Magnetplatten (5, 6) aufweist, welche die Magnetschenkel (2) miteinander verbindet, wobei die Windungen (4) durch einen passend gewählten Wicklungssinn jeweils mindestens eine magnetfeldfreie Zone (9) in den Magnetplatten (5, 6) ausbilden, dadurch gekennzeichnet, dass in mindestens eine Magnetplatte (5, 6) innerhalb der magnetfeldfreien Zone (9) eine Ausnehmung (10) eingebracht ist, durch die hindurch ein mit einem Kühlkörper (11) verbundener Kühlzapfen (12) bis zu einer Oberfläche der Leiterplatte (3) geführt ist. 1. Matrix transformer, consisting of a body (1) made of soft magnetic material, which forms a closed magnetic circuit through openings in at least one printed circuit board (3), the body (1) having a plurality of magnet legs (2) which are covered by current-conducting windings ( 4) are enclosed, the body (1) having two magnetic plates (5, 6) which are parallel on both sides of the printed circuit board (3) and which connect the magnetic legs (2) to one another, the turns (4) each having at least one form a magnetic field-free zone (9) in the magnetic plates (5, 6), characterized in that a recess (10) is made in at least one magnetic plate (5, 6) within the magnetic field-free zone (9), through which a with a heat sink (11) connected cooling pin (12) is guided up to a surface of the printed circuit board (3).
2. Matrixtransformator nach Anspruch 1 , dadurch gekennzeichnet, dass die Magnetschenkel (2) und die Magnetplatten (5, 6) durch Ferrite ausgebildet sind. 2. Matrix transformer according to claim 1, characterized in that the magnetic legs (2) and the magnetic plates (5, 6) are formed by ferrites.
3. Matrixtransformator nach Anspruch 1 , dadurch gekennzeichnet, dass die Windungen (4) durch Leiterbahnen der Leiterplatte (3) ausgebildet sind. 3. Matrix transformer according to claim 1, characterized in that the windings (4) are formed by conductor tracks of the printed circuit board (3).
4. Matrixtransformator nach Anspruch 1 oder 3, dadurch gekennzeichnet, dass die Windungen (4) zumindest teilweise durch auf der Leiterplatte (3) angebrachte gewickelte Drähte oder geschnittenen Bleche geformt sind. 4. Matrix transformer according to claim 1 or 3, characterized in that the windings (4) are formed at least partially by the printed circuit board (3) attached wound wires or cut metal sheets.
EP22734878.6A 2021-06-17 2022-06-07 Matrix transformer Pending EP4356405A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021003119.9A DE102021003119A1 (en) 2021-06-17 2021-06-17 matrix transformer
PCT/EP2022/065333 WO2022263221A1 (en) 2021-06-17 2022-06-07 Matrix transformer

Publications (1)

Publication Number Publication Date
EP4356405A1 true EP4356405A1 (en) 2024-04-24

Family

ID=82308223

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22734878.6A Pending EP4356405A1 (en) 2021-06-17 2022-06-07 Matrix transformer

Country Status (5)

Country Link
US (1) US20240047128A1 (en)
EP (1) EP4356405A1 (en)
CN (1) CN117355914A (en)
DE (1) DE102021003119A1 (en)
WO (1) WO2022263221A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4665357A (en) 1984-04-23 1987-05-12 Edward Herbert Flat matrix transformer
US5479146A (en) 1993-07-21 1995-12-26 Fmtt, Inc. Pot core matrix transformer having improved heat rejection
US20160307695A1 (en) * 2014-03-19 2016-10-20 Ionel Jitaru Magnetic structures for low leakage inductance and very high efficiency
US10074474B2 (en) 2016-05-13 2018-09-11 Enphase Energy, Inc. Matrix planar transformer
US10910140B2 (en) * 2017-02-03 2021-02-02 Virginia Tech Intellectual Properties, Inc. Matrix transformer and winding structure

Also Published As

Publication number Publication date
DE102021003119A1 (en) 2022-12-22
US20240047128A1 (en) 2024-02-08
WO2022263221A1 (en) 2022-12-22
CN117355914A (en) 2024-01-05

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