EP2018643A1 - Inductive component and method for manufacturing an inductive component - Google Patents
Inductive component and method for manufacturing an inductive componentInfo
- Publication number
- EP2018643A1 EP2018643A1 EP07728738A EP07728738A EP2018643A1 EP 2018643 A1 EP2018643 A1 EP 2018643A1 EP 07728738 A EP07728738 A EP 07728738A EP 07728738 A EP07728738 A EP 07728738A EP 2018643 A1 EP2018643 A1 EP 2018643A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- magnetic
- ceramic layer
- layers
- recess
- dielectric ceramic
- 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.)
- Granted
Links
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- 230000001939 inductive effect Effects 0.000 title claims abstract description 39
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- 238000004804 winding Methods 0.000 claims abstract description 54
- 239000004020 conductor Substances 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims description 17
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/0006—Printed inductances
- H01F17/0013—Printed inductances with stacked layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/043—Fixed inductances of the signal type with magnetic core with two, usually identical or nearly identical parts enclosing completely the coil (pot 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
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/041—Printed circuit coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
- H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/34—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials non-metallic substances, e.g. ferrites
- H01F1/342—Oxides
- H01F1/344—Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe3O4
- H01F1/348—Hexaferrites with decreased hardness or anisotropy, i.e. with increased permeability in the microwave (GHz) range, e.g. having a hexagonal crystallographic structure
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
Definitions
- the present invention relates to a method for producing an inductive component, which is formed from several layers. Moreover, the invention also relates to such an inductive component.
- Static magnetic devices such as trans ⁇ formators and inductors are essential elements of circuits that are designed for storage and conversion of energy, for impedance matching, filtering, suppression of electromagnetic interference or even for voltage or current conversion.
- these components are also essential com ⁇ ponents of resonant circuits.
- Inductive components are based on the generation of alternating magnetic fields by primary currents, which in turn induce secondary currents. At high frequencies they can therefore be produced with acceptable compactness and efficiency without magnetic materials by suitable arrangement of the current paths.
- partially planar windings have proven successful over the wire-wound, relatively expensive components, which can be integrated in conven tional ⁇ multilayer circuit carrier of organic or ceramic materials.
- FIG. 1 The two spatial areas with high magnetic permeability on the one hand and good insulation of the windings on the other hand are shown in basic form in FIG.
- a ring core 1 is shown, which is surrounded on the one hand by a primary winding 2 and on the other hand by a secondary winding 3.
- FIG. 1 Another basic embodiment is shown in FIG.
- two ring cores Ia and Ib are provided, which are arranged side by side in the horizontal direction, wherein both ring cores Ia and Ib are surrounded by a primary winding 2 and a Se ⁇ kundärwicklung 3, which are horizontally stacked net, are surrounded.
- Fig. 3 is a sectional view in the plane of the primary winding 2 as shown in FIG. 2 is shown.
- the winding 2 can be seen, which ⁇ a central region 11 of the ferrite core, which is formed by the ring cores Ia and Ib ⁇ .
- a ferrite core of the inductive component is formed.
- the vertical ferrite legs detected in the sectional view are closed by ferrite cover layers on the top and bottom sides of these ring cores Ia and Ib.
- the windings 2 and 3 and the toroidal cores Ia and Ib are embedded in a dielectric 4.
- FIG. 4 shows a further sectional view which shows an approximation to a pot core with five vertical limbs made of ferrite material.
- the Legs are characterized by the central portion 11 and the vertical outer legs 1a, 1b, 1c and 1d. Again, the arrangement is embedded in an insulating dielectric medium.
- FIGS. 1 and 2 are made by connecting a material with low permeability at higher resistivity and a material with higher permeability at lower resistivity forth ⁇ .
- the integration of these two materials is carried out by punching out openings in the films of a material, filling the openings with pieces of film or film stacks of the other material and anschlie ⁇ zdes common sintering. This intarsia process is complex and error-prone even with well-matched materials and thus relatively expensive, since the films must be processed on impact.
- US Pat. No. 6,198,374 discloses a method based on conventional LTCC technology. In this method, only one type of film, namely the most suitable ferrite is used to print the conductors on it. These are then screen-printed with non-magnetic dielectric material, for example. This is to be reduced in the vicinity of the turns of a winding, the effective permeability and based on the leakage of field lines leakage inductance. In addition, this is intended to improve the electrical insulation between the windings.
- a disadvantage is the additional material layer in the Range of turns, which can not be chosen arbitrarily thick to avoid stress cracks. In particular, the conductor paths are to be interpreted gen-performance even at ⁇ electronic applications as thick as possible to reduce resistance losses. The known method thus offers only limited effectiveness.
- the present invention is therefore based on the object to provide a method by which an inductive component with high dielectric strength can be produced with little effort. In addition, it is also an object to provide such an inductive component.
- this is formed from a plurality of layers.
- an electrically conductive material is arranged as a winding or winding of the component on a first non-magnetic, dielectric ceramic layer.
- at least one continuous recess is formed in the non-magnetic dielectric ceramic layer.
- a first magnetic ceramic layer or a corresponding layer stack is arranged on an upper side of this non-magnetic dielectric ceramic layer.
- a separate second magnetic ceramic layer or a corresponding one Layer stack is placed on a bottom surface of the non-magnetic dielectric ceramic layer.
- This so created intermediate state of the inductive component is then subjected to at least one further process step, at least one of the magneti ⁇ rule ceramic layers is plastically deformed in which such a way that the two magnetic ceramic layers in the area of the recess can be contacted and form a magnetic core of the component ,
- an inductive component can be produced in a low-cost and thus also cost-effective manner.
- the inductive construction ⁇ element can with an optimizeddersfestig ⁇ ness between the windings or the windings of the inductor are generated.
- the order of the process steps is not specified by the list above. In particular, can the first two steps in reverse order Runaway ⁇ be leading.
- the electrically conductive material is in Hautbet the non-magnetic, dielectric ceramic layer ⁇ tet or printed.
- the non-magnetic, dielektri ⁇ specific ceramic layer and the magnetic ceramic layers are preferably provided as films.
- the dimensions of the recess in the plane of the ceramic layer are made larger in comparison to the thickness of the ceramic layer.
- the turns or windings are thus preferably conventionally in the un ⁇ magnetic dielectric ceramic layer embedded or at least imprinted there.
- Experience shows that genfind of 5 to 10 are sufficient for a variety of applications and thus results in a relatively low material ⁇ strength of the entire inductive component of a few 100 microns.
- at least one non-magnetic, dielectric ceramic layer is to be ⁇ vorzugt punched openings provided, whose extension is large compared to the material thickness of the multilayer.
- a recess has a diameter between 1 mm and 3 mm, preferably about 2 mm.
- these magnetic ceramic layers gene directly to the electrically conductive materials, and thus the compounds or Wicklun- and are applied to the top and bottom of the non ⁇ magnetic, dielectric ceramic layer. It can also be provided that the windings or windings are covered by a further non-magnetic, dielectric ceramic layer and thus substantially completely surrounded by non-magnetic, dielectric material. An immediate Ver ⁇ binding with the magnetic ceramic layers is not provided in this embodiment.
- the process step for the plastic deformation of at least one magnetic ceramic Layer performed as a sintering process.
- This sintering process is carried out in such a way that the magnetic ceramic layers, which are preferably ferrite foils, are centered on one another by plastic deformation as a result of the softening of the glass part in the recess of the non-magnetic, dielectric ceramic material.
- Both magnetic ceramic layers preferably deform during this sintering process.
- Characterized practical ⁇ can illustrates a magnetic Via be produced by sufficiently large cross-section, which closes the magnetic flux.
- a magnetic core of the component can be formed in an optimized manner.
- a support can be applied which is arranged to support the deformation of this ceramic layer.
- the deformation can be carried out in a location-specific manner, and the deformation of the magnetic ceramic layers into the recess and thus also the contacting of the two magnetic ceramic layers can be improved.
- the contact surface between the two magnetic ceramic layers can thereby be made as large as possible.
- a plurality of non-magnetic, dielectric layers is stacked with non-magnetic in each of the dielectric ceramic layers is formed at least one recess and the non ⁇ magnetic, dielectric ceramic layers are so arranged Ü prepared different that these recesses at least partially overlap.
- a recess is formed in a non-magnetic dielectric ceramic layer of different dimensions to a recess of at least a second non-magnetic dielectric ceramic layer.
- the non-magnetic, dielectric ceramic layers are then preferably stacked in such a way that a recess which runs through all non-magnetic, dielectric ceramic layers is designed to be at least partially tapered.
- a recess is, which is formed initially tapers and then widens as ⁇ .
- this taper and subsequent extension is formed in a cross-sectional view such that the continuous recess is sym ⁇ metric to a horizontal symmetry line in a cross-sectional view is formed.
- the taper is formed as a stepped profile.
- Stepped magnetic vias offer a high degree of design freedom in terms of the number of dielectric and magnetic layers.
- At least mik Mrs to a magnetic Kera ⁇ a magnetic material is applied, wherein the magnetic ceramic layer is not so magnetic ⁇ on the dielectric ceramic layer is disposed such that the magnetic material is in the range of from ⁇ saving is positioned.
- the magnetic material is preferably applied with such a structure, which essentially corresponds to the inverse configuration of the tapered recess of the plurality of stacked non-aligned ones. corresponds to magnetic, dielectric ceramic layers. With more turns and a higher number of layers, such a step design in the region of this recess avoids too small radii of curvature of the outer magnetic ceramic layers, in particular of the ferrite layers.
- this magnetic material is printed on the magnetic ceramic layers.
- a reduction of the plastic deformation of the magnetic ceramic layers in the region of the recess can thereby be achieved.
- this magnetic Mate ⁇ material is printed as a ferritic thick film paste by a screen ⁇ printing process.
- ferrite paste can be repeatedly printed on the magnetic ceramic layers in the region of the recess before laminating in order to close the recess completely and thus to be able to form without an air gap.
- the ⁇ lectric ceramic layers are formed, between which a magnetic layer, in particular a magnetic ceramic layer, is formed.
- these magnetic ceramic layer is provided as a pass layer forms ⁇ out. This allows targeted field line courses is ⁇ be presents. For example, this also Feldli ⁇ nien escape laterally, without penetrating all the turns to transit. The size of this leakage inductance can be adjusted specifically by the thickness of this additionally introduced magnetic ceramic layer.
- the electrically conductive material can be used to form windings be formed on an upper side and on an underside of this non ⁇ magnetic, dielectric ceramic layer.
- the electrically conductive material may be arranged to form a primary winding and a secondary winding of the inductive component.
- the non-magnetic, dielectric ceramic layer is preferably formed with a thickness between 20 ⁇ m and 200 ⁇ m, in particular between 50 ⁇ m and 100 ⁇ m.
- the conductor tracks or windings can be completely embedded in highly insulating, dielectric ceramic. Due to the high dielectric strength, these ceramic layers can be made correspondingly thinner, whereby costs can be saved and the size can be minimized.
- the inductive component is preferably designed as a monolithically integrated planar transformer.
- the functions of the magnetic permeability and the electrical iso- lation to be in their respective regions of space accomplished by each specific tailor-made ceramics where ⁇ tion by a high potency of the design and Anforde ⁇ and application result of the component.
- different ceramics can be used.
- hexa-ferrite ceramics in particular barium-hexa-ferrite ceramics, can preferably be used. These have a permeability between about 10 and 30.
- a second class of ceramics can then be used ⁇ when mid-range frequencies from about 10 to about 30 are required to MHz.
- ⁇ se CuNiZn ferrite materials can be used beispielswei.
- the permeability of ceramics used for components for use in this medium frequency range has permeability values of about 150 to about 500.
- ceramics used for components in the relatively low frequency range of between about 1 to about 3 MHz.
- MnZn ferrite materials can be used.
- ceramics used in this class have permeability values between about 500 and 1000.
- An inventive inductive component is made up of a plurality of layers, and realized in particular as a mo ⁇ nolithisch integrated planar transformer.
- the inductive component comprises at least one elekt ⁇ driven conductive winding which is disposed at a first non-magnetic, dielectric ceramic layer.
- the ⁇ lectric ceramic layer is formed at least one continuous recess.
- the inductive component comprises Furthermore, a first magnetic ceramic layer, wel ⁇ che is disposed on an upper side of the non-magnetic, dielectric ceramic layer.
- a second magnetic ceramic layer is disposed on a lower side of this non-magnetic dielectric ceramic layer.
- At least one of these two magneti ⁇ rule ceramic layers is plastically deformed in the region of the recess, that it is connected rule with the other magneti ⁇ ceramic layer in the area of the recess and the component is formed by these two ceramic layers in total, a magnetic core.
- the inductive component provided in this way has an optimized dielectric strength between the windings or windings and, moreover, can be produced inexpensively.
- FIG. 1 shows a first known basic structure of a transformer
- Fig. 2 shows a second known basic structure of a transformer
- Fig. 3 is a sectional view of the transformer of FIG. 2;
- FIG. 5 is a sectional view through a first embodiment of an inductive component according to the invention.
- FIG. 6 is a sectional view through a second embodiment of an inductive component according to the invention.
- FIG. 7 is a sectional view through a further embodiment of an inductive component according to the invention, which is not yet completed.
- Fig. 8 is a sectional view through a further embodiment of an inductive component according to the invention.
- non-magnetic material is here referred ⁇ with a material which in comparison to the material used for the magnetic ceramic layer of magnetic material has a relative magnetic permeability equal to 1 near the o- has. 5
- a first embodiment of a completed monolithically integrated planar transformer I is shown.
- a longitudinal section through a stack of layers is shown, wherein only the part of the planar transformer I essential for the invention is shown.
- the sectional view shows ei ⁇ nen planar transformer I with low number of turns, which was produced in LTCC technology.
- the planar transformer I has a non-magnetic, dielectric ceramic layer 5, which is formed as a foil.
- gezzie ⁇ ne current-carrying conductor tracks or windings 511, 512 are arranged 513 and 514, which surround the transformer core in a given direction of rotation and represent windings of a primary winding of the planar transformer. 1 In a plan view, this primary winding is spiral-shaped. At not shown ends of this winding contacts are attached, through which an electrical connection with a Energyver ⁇ supply can be made possible.
- a secondary winding is formed which the Win ⁇ applications 521, 522, 523 and 524 includes.
- This secondary winding also has ends which are provided for further electrical contacting.
- Both the turns 511 to 514 of the primary winding and the turns 521 to 524 of the secondary winding are printed in a conventional manner on the upper side 51 and on the lower side 52 of the dielectric ceramic layer 5, respectively.
- the planar transformer I has a continuous recess 53, which is produced by a stamping process.
- a second magnetic ceramic layer 7 is disposed on the underside 52 and directly on the windings 521 to 524 of the secondary winding.
- these two magnetic ceramic layers 6 and 7 are plastically deformed and connected centrally to each other ⁇ .
- practically a magnetic via is formed in the region of the recess 53, as a result of which the two magnetic ceramic layers 6 and 7 form a magnetic core of the planar transformer I.
- the magnetic ceramic layers 6 and 7 are also contacted with one another at the edge regions facing away from the recess 53 in the x-direction.
- This contacting at the edge regions is also formed by a plastic deformation of at least one of the ceramic layers 6 or 7.
- the indentations in the y-direction in the region of the recess 53 resulting from the plastic deformation of the ceramic layers 6 and 7 can be planarized as required by a subsequent doctor blade process.
- a further dielectric paste can be applied at the appropriate points, which is formed flat by this doctor blade process.
- the finished Planartransforma ⁇ tor I shown in Fig. 5 is formed such that firstly the DIE lectric ceramic layer 5 is prepared and is prepared for further processing. For this purpose, the at least one recess 53 punched out. Furthermore, who then the electrically conductive material for forming the windings 511-514 and the windings 521 are printed on the respective surfaces of the dielectric ceramic layer 5 ⁇ to 524th
- the recess in the x-direction and also in the z-direction (perpendicular to the plane of the figure) is punched out with dimensions which are substantially greater than the thickness (y-direction) of the dielectric ceramic layer 5.
- the two separately provided magneti ⁇ rule ceramic layers 6 and which are provided as a closed unfired green sheets of ferrite 7, laminated in such a way is that this ceramic layers 6 and 7 by virtue of their organic binder component Plas ⁇ tical deformation in the recess 53 centered together. A central region 9 of the magnetic core of the planar transformer I is thus formed in the recess. Subsequently, the sintering process takes place. In the exemplary embodiment, the plastic deformation thus takes place through the lamination process. In place of the layers 6 and 7, a stack of multiple magnetic layers may according to the requirements of the Bauele ⁇ ments each be formed.
- FIG. 6 A further embodiment of a monolithic was that prepared in LTCC technology in ⁇ tegrated planar transformer II is shown in Fig. 6.
- Fig. 6 is a longitudinal sectional view of a partial section of a finished planar transformer II shown.
- the sectional view shows a structure of the planar transformer II, which has a high number of turns.
- the planar transformer II has non-magnetic dielectric ceramic layers 5a, 5b, 5c, 5d and 5e which are stacked one above the other.
- windings are respectively applied to the upper sides.
- the windings 511b, 512b, 513b and 514b are mentioned, which are printed on an upper side 51b of the ⁇ lectric ceramic layer 5b.
- the Win ⁇ applications 511a, 512a, 513a and 514a of the dielectric ceramic layer 5a are printed on an upper surface 51a.
- these windings are assigned to a primary winding of the planar transformer II.
- the unspecified, printed on the dielectric ceramic layers 5d and 5e turns are a secondary winding of the planar transformer II zugeord ⁇ net.
- the windings may also be arranged such that on an upper side, for example on the Obersei ⁇ te of the dielectric ceramic layer 5a disposed Win ⁇ applications in x-direction alternately one of which the primary winding and the subsequent one of the secondary winding is assigned.
- the dielectric ceramic layer 5 c is arranged on the dielectric ceramic layer 5 b as the final covering layer.
- the turns of the planar transformer II are thereby completely surrounded by dielectric ceramic material.
- magnetic ceramic layers 6 and 7 are laminated on the opposite sides of the stacked dielectric ceramic layer 5a to 5e, which are plastically deformed in the region of a recess 53 ', so that they are interconnected in this area.
- a central region 9 'of the magnetic core of the planar transformer II is also formed here.
- the stacked dielectric ceramic layers 5a to 5e each have recesses which have different dimensions.
- the dielectric ceramic layers 5a to 5e are stacked in such a way that the individual recesses formed in each of these ceramic layers form a common continuous recess 53 '.
- the dielectric ceramic layer 5c in the sectional view shown has a recess which, at least in the x-direction, is larger than the recesses formed individually in the electrical ceramic layers 5b, 5a and 5d.
- FIG. 7 shows a further longitudinal section through a planar transformer III, which is shown in a process stage that has not yet been completed. Again, only a partial section is shown, which shows the essential structure in a central area of the component.
- the design and arrangement of the non-magnetic, dielectric ceramic layers 5a to 5e is analogous to the embodiment according to FIG. 6. Moreover, it can be seen in FIG. 7 that the first magnetic ceramic layer 6 or possibly a corresponding layer stack is provided with an additional structure which has the layers 6a and 6b. These layers 6a and 6b are made of a magnetic material, and are applied in the diarysbei ⁇ game of ferritic thick-film paste by screen printing. It can be seen that these layers 6a and 6b are formed on the surface of the magnetic ceramic layer 6 facing the dielectric ceramic layers 5a to 5e. These layers 6a and 6b are formed as a stepped profile and designed so that they are designed as a complementary structure to the step configuration of the dielectric ceramic layers 5c and 5b.
- the second magnetic ceramic layer 7 or a corresponding layer stack also possibly layers 7a and 7b which are formed fenprofil as Stu ⁇ and as a complementary structure with respect to the stepped profile which is generated by the ⁇ lektrischen ceramic layers 5d and 5e is, are trained.
- the magnetic ceramic layers 6 and 7 are positioned in a subsequent process such that as shown in Fig. 7, the layers 6a and 6b and the layers 7a and 7b substantially in the region of the stepped profile, which rule by the dielektri ⁇ ceramic layers 5a to 5b is formed, are arranged.
- these structures of the ceramic layers 6 and 7 are laminated on the stacked form of the dielectric ceramic layers 5a to 5e such that a recess 53 '' is formed.
- a recess 53 '' is formed.
- FIG. 8 shows a further longitudinal sectional illustration of a further exemplary embodiment of a monolithically integrated planar transformer IV.
- the planar transformer IV is shown in a completed state. It can be seen that between an ⁇ lectric ceramic layer 5 a and a dielectric ceramic layer 5 f, an intermediate layer is formed, which is ⁇ forms as a further magnetic ceramic layer.
- an intermediate layer is formed, which is ⁇ forms as a further magnetic ceramic layer.
- this Magnetic ceramic layer 10 each stacked and designed in the region of a recess 53 '''designed the ⁇ lectric ceramic layers 5a, 5b and 5c and 5f, 5g and 5h.
- a central region 9 "of the magnetic core of the planar transformer IV is formed.
- a central magnetic ceramic layer 10 which in turn may be a ferrite
- field lines of the primary winding in the embodiment, the turns, which are on the ceramic layers 5g, 5h arranged
- the secondary winding turns, which on the ceramic layers 5a and 5b are arranged
- stray inductance can be seen in the fact that no additional separate component is required in order to achieve the individual setting of impedances can.
- the primary side can have an additional leakage inductance, which represents a further degree of freedom for the circuit design of the component. In the embodiment shown, such a targeted adjustment can thus be made possible by an integrated design.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Coils Or Transformers For Communication (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006022785A DE102006022785A1 (en) | 2006-05-16 | 2006-05-16 | Inductive component and method for producing an inductive component |
PCT/EP2007/054285 WO2007131884A1 (en) | 2006-05-16 | 2007-05-03 | Inductive component and method for manufacturing an inductive component |
Publications (2)
Publication Number | Publication Date |
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EP2018643A1 true EP2018643A1 (en) | 2009-01-28 |
EP2018643B1 EP2018643B1 (en) | 2010-11-24 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP07728738A Expired - Fee Related EP2018643B1 (en) | 2006-05-16 | 2007-05-03 | Inductive component and method for manufacturing an inductive component |
Country Status (8)
Country | Link |
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US (1) | US7973631B2 (en) |
EP (1) | EP2018643B1 (en) |
JP (1) | JP4971432B2 (en) |
KR (1) | KR101433838B1 (en) |
CN (1) | CN101443863B (en) |
DE (2) | DE102006022785A1 (en) |
TW (1) | TW200802436A (en) |
WO (1) | WO2007131884A1 (en) |
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DE102006025098B4 (en) * | 2006-05-19 | 2008-06-05 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Sensor for determining the electrical conductivity of liquid media and a method for its production |
CN101981635B (en) * | 2008-04-08 | 2013-09-25 | 株式会社村田制作所 | Electronic component |
CN102637677A (en) * | 2012-04-24 | 2012-08-15 | 上海宏力半导体制造有限公司 | Inductor as well as forming method thereof, radio frequency device and integrated passive device |
JP5970716B2 (en) * | 2012-06-08 | 2016-08-17 | 株式会社村田製作所 | Electronic component and manufacturing method thereof |
JP6090902B2 (en) * | 2012-10-17 | 2017-03-08 | Necトーキン株式会社 | Coil parts |
WO2015069279A1 (en) * | 2013-11-08 | 2015-05-14 | Empire Technology Development Llc | Apparatus and methods for detecting substrate alignment during a printing process |
JP5999119B2 (en) * | 2014-02-10 | 2016-09-28 | 株式会社村田製作所 | Inductor |
KR101762778B1 (en) | 2014-03-04 | 2017-07-28 | 엘지이노텍 주식회사 | Wireless communication and charge substrate and wireless communication and charge device |
DE102014218638A1 (en) * | 2014-09-17 | 2016-03-31 | Siemens Aktiengesellschaft | Producing a component with a ceramic powder body |
KR20160117943A (en) * | 2015-04-01 | 2016-10-11 | 삼성전기주식회사 | Coil component |
DE102015206697A1 (en) * | 2015-04-15 | 2016-10-20 | Schaeffler Technologies AG & Co. KG | Primary part of an electrical machine, electrical machine and method for producing a primary part |
DE102018204366A1 (en) * | 2018-03-22 | 2019-09-26 | Robert Bosch Gmbh | Inductive component and high-frequency filter device |
KR102019877B1 (en) | 2019-05-08 | 2019-11-04 | 국방과학연구소 | Particle-matrix composite with effective permeability by using coil-type conductive micro particles |
US11387678B2 (en) | 2019-09-27 | 2022-07-12 | Apple Inc. | Stacked resonant structures for wireless power systems |
US20210098180A1 (en) * | 2019-09-30 | 2021-04-01 | Advanced Semiconductor Engineering, Inc. | Inductor structure |
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KR890004585B1 (en) | 1980-09-11 | 1989-11-16 | 아사히가세이고교가부시키가이샤 | Microcoil assembly |
US5349743A (en) * | 1991-05-02 | 1994-09-27 | At&T Bell Laboratories | Method of making a multilayer monolithic magnet component |
WO1996042095A1 (en) | 1995-06-13 | 1996-12-27 | Nihon Shingo Kabushiki Kaisha | Flat transformer |
JPH09199331A (en) * | 1996-01-18 | 1997-07-31 | Matsushita Electric Ind Co Ltd | Coil component and its manufacture |
JPH10189342A (en) * | 1996-12-24 | 1998-07-21 | Matsushita Electric Ind Co Ltd | Common mode choke coil and its manufacture |
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JP2001007468A (en) * | 1999-06-24 | 2001-01-12 | Nec Kansai Ltd | Wiring board, multilayered wiring board, and their manufacture |
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DE10030605A1 (en) * | 2000-06-21 | 2002-01-03 | Philips Corp Intellectual Pty | Electronic component |
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KR100466884B1 (en) * | 2002-10-01 | 2005-01-24 | 주식회사 쎄라텍 | Stacked coil device and fabrication method therof |
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- 2007-05-03 KR KR1020087030628A patent/KR101433838B1/en not_active IP Right Cessation
- 2007-05-03 JP JP2009510399A patent/JP4971432B2/en not_active Expired - Fee Related
- 2007-05-03 CN CN2007800177067A patent/CN101443863B/en not_active Expired - Fee Related
- 2007-05-03 US US12/300,909 patent/US7973631B2/en not_active Expired - Fee Related
- 2007-05-03 EP EP07728738A patent/EP2018643B1/en not_active Expired - Fee Related
- 2007-05-03 DE DE502007005763T patent/DE502007005763D1/en active Active
- 2007-05-09 TW TW096116383A patent/TW200802436A/en unknown
Non-Patent Citations (1)
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Also Published As
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TW200802436A (en) | 2008-01-01 |
WO2007131884A1 (en) | 2007-11-22 |
DE102006022785A1 (en) | 2007-11-22 |
DE502007005763D1 (en) | 2011-01-05 |
JP2009537976A (en) | 2009-10-29 |
CN101443863B (en) | 2012-05-30 |
US20090102591A1 (en) | 2009-04-23 |
JP4971432B2 (en) | 2012-07-11 |
KR20090015975A (en) | 2009-02-12 |
EP2018643B1 (en) | 2010-11-24 |
CN101443863A (en) | 2009-05-27 |
KR101433838B1 (en) | 2014-08-27 |
US7973631B2 (en) | 2011-07-05 |
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