CN1199205C - Common-mode choke mounted on lining and its producing method - Google Patents
Common-mode choke mounted on lining and its producing method Download PDFInfo
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- CN1199205C CN1199205C CNB001290622A CN00129062A CN1199205C CN 1199205 C CN1199205 C CN 1199205C CN B001290622 A CNB001290622 A CN B001290622A CN 00129062 A CN00129062 A CN 00129062A CN 1199205 C CN1199205 C CN 1199205C
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- 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
- H01F17/0033—Printed inductances with the coil helically wound around a magnetic core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F5/00—Coils
-
- 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
- H01F41/046—Printed circuit coils structurally combined with ferromagnetic material
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- 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
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F2017/0093—Common mode choke coil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F37/00—Fixed inductances not covered by group H01F17/00
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Abstract
A common mode choke coil has first and second spiral conductive layer elements electrically insulated from each other at a base. The base is made of a magnetic material or a dielectric material. at least one of the first and the second spiral conductive layer elements is formed in close contact with a surface of the base. The common mode choke coil has two spiral conductor layer elements at a base. Therefore, the common mode choke coil may be easily and economically provided that has high Q-characteristics or high impedance at a common mode and little fluctuation of resonance frequencies and inductance.
Description
Technical field
The present invention relates to relate in particular to common mode choke and manufacture method thereof that a kind of substrate is installed in order to suppress the noise filter of electromagnetic noise.
Background technology
Along with the size reduction of electric equipment and the increase of processing frequency, increased the importance of resistance EMI (electromagnetic interference) measure.As the impedance operator that resists the EMI measure, the common screening frequencies noise of impedance component.
The common mode choke of winding class and lamination-type uses as the electromagnetism noise filter.
The choke of miniaturization winding-type has increased the defective of giving birth to therefrom by dwindling the line footpath.In addition, factors such as spacing variation cause the error in resonance frequency and the inductance, and are difficult to adjust.Also be not easy to make.
And the scheme under the lamination-type situation is scheduled to, thus the inductance error that generation is caused by reason such as in uneven thickness.And, because laminated construction makes and makes difficulty.
Summary of the invention
An object of the present invention is provides common mode choke easily and economically, has the spiral conductor of two mutual electric insulations on a pedestal, and this common mode choke has high Q characteristic and the very little resonance frequency and the unsteadiness of inductance.
Another object of the present invention is to provide common mode choke easily and economically, has the spiral conductor of two mutual electric insulations on a pedestal, and this common mode choke has high common code impedance and the very little resonance frequency and the unsteadiness of inductance.
Another purpose of the present invention provides the method for making above-mentioned common mode choke.
Be that the present invention proposes a kind of common mode choke, comprise: a pedestal of forming by magnetic material or dielectric substance; The first and second spiral conductive layers that form and be electrically insulated from each other around this pedestal at the pedestal place; One first insulating barrier that between the first and second spiral conductive layers, forms or dielectric or magnet; The first and second spiral conductive layers circumferentially in one second insulating barrier of formation; Wherein this first spiral conductive layer and this pedestal surface forms contiguously; This first and second spiral conductive layer is that at least one process by at least one process in coating, spraying and the deposition or by the laser nicking, in sandblasting and spraying water forms, and remove the conductive layer that on pedestal, forms by at least one process in coating, spraying and the deposition, to form groove.
A kind of common mode choke comprises: a pedestal of being made up of magnetic material or dielectric substance; Form and vertically go up the first and second spiral conductive layers adjacent one another are around this pedestal along of pedestal; First insulating barrier that between the first and second spiral conductive layers, forms; One the first and second spiral conductive layers circumferentially in second insulating barrier of formation, the first and second spiral conductive layers are electrically insulated from each other on by the pedestal on this first insulating barrier; Wherein this first and second spirals conductive layer all forms contiguously with a surface of this pedestal, and this first and second spirals conductive layer alternately forms on the surface of this pedestal; The first and second spiral conductive layers are that at least one process by at least one process in coating, spraying and the deposition or by the laser nicking, in sandblasting and spraying water forms, and remove the conductive layer that on pedestal, forms by at least one process in coating, spraying and the deposition, to form groove.
First and second conductive layers have mutually the same electrical length.
According to an aspect of the present invention, the common mode choke that provides has the first and second spiral conductive layer parts that are electrically insulated from each other at a pedestal.This pedestal by magnetic or dielectric substance make.This first and the second spiral conductive layer parts one of at least form tight the contact with the surface of this pedestal.
According to a further aspect in the invention, provide a kind of method of making above-mentioned common mode choke.This method be is characterized in that, forms on the surface of pedestal after at least one conductive layer, and by at least one laser nicking, sandblast and the water spray process forms two spiral conductors, the layer of removing this conductivity simultaneously is so that the form groove.
And, according to a further aspect in the invention, provide a kind of manufacture method that obtains above-mentioned common mode choke.This method is characterized in that, form two spiral conductive layers and insulating barrier by silk screen printing after, removes adhesive and carries out and cure, thereby form this coil.
According to a further aspect in the invention, provide a kind of manufacture method that obtains above-mentioned any common mode choke.This method is characterized in that the input and output terminal that closely contacts the spiral conductive layer part of formation with this pedestal is by utilizing a kind of resist to carry out etching, form till this spiral conductive layer partly is exposed up to constituting.
Description of drawings
Fig. 1 is a front view of explaining the common mode choke of first example according to the present invention;
Fig. 2 is the schematic diagram of end product of the common mode choke of key-drawing 1;
Fig. 3 A is the front view of the common mode choke pedestal of second example according to the present invention;
Fig. 3 B is the end view of the pedestal of Fig. 3 A;
Fig. 4 A is the front view of the pedestal of a common mode choke of the 3rd example according to the present invention;
Fig. 4 B is the end view of the pedestal of Fig. 4 A;
Fig. 5 is used to explain the double-layer spiral common mode choke of the present invention's the 6th example;
Fig. 6 is used for the section of the double-layer spiral current-carrying part of key-drawing 5;
Fig. 7 is the schematic diagram of end product of the common mode choke of key-drawing 5;
Fig. 8 is a perspective view of explaining the common mode choke of the 9th example according to the present invention;
Fig. 9 is used for the section of spiral current-carrying part of the common mode choke of key-drawing 8; And
Figure 10 is used for the end product of the common mode choke of key-drawing 8.
Embodiment
Example 1
With reference to Fig. 1 and Fig. 2, explain the structure of a kind of common mode choke of first example according to relevant manufacturing process according to the present invention.
Electric conducting material is coated on the surface of the prismatic pedestal of being made by dielectric or magnetic material 10.This electric conducting material that uses can provide by materials such as coating, spraying or deposited copper, aluminium, silver.
This electric conducting material also can remove this adhesive and cure this conducting resinl then and provide by after a kind of conducting resinl of being made by conductive powder and adhesive of coating.
Under the situation of prismatic shape, can there be chamfering radius R at the edge.As being illustrated by thick black line among Fig. 1, by the laser nicking, sandblast or spray water, spiral groove 14a, 14b are formed on the pedestal 10 with two-stage, go up two spiral conductive layer parts 15 and 16 alternately thereby be formed on pedestal 10 surfaces.One of these spiral conductive layer parts are called the first spiral conductive layer parts 15, and are represented by the dash area among Fig. 1.Another is called the second spiral conductive layer parts 16 these spiral conductive layer parts, and is represented by the non-shaded portion among Fig. 1.
By groove 13 is provided, the terminal part on two ends 11 and 12 is divided into four terminals 20,21,22 and 23.
With reference to figure 2, between terminal part 11 and 12, insulating resin 24 is coated on the whole surface of spiral current-carrying part 17.Subsequently, four terminals 20,21,22 and 23 are carried out the welding coating, and fall in two end-grain cutting of two ends 18 and 19 of terminal part from Fig. 1.The result is that the common mode choke 1 that provides has two spiral conductive layers of mutual insulating, the first and second spiral conductive layer parts 15 and 16 promptly alternate with each other.
Subsequently, be further explained in detail the manufacturing of the common mode choke of example 1 according to the present invention.
On the prismatic pedestal 10 of 1.6 * a 1.0 * 1.0mm who makes by magnetic material, form 15 microns conductive layer by copper facing with μ '=30.Form groove 14a, the 14b of spiral form by the laser nicking at this on coated with the pedestal 10 of metal film.At first, pedestal 10 moves on perpendicular to the direction of laser, thereby towards the base ends 11 in the bight of pedestal and at vertical formation groove 13 of pedestal.Subsequently, along with pedestal 10 moves, also rotate perpendicular to moving direction ground.Thereby in pedestal 10, form the first spiral conductive layer parts 15.Rotation stops at opposite end part 12 subsequently, so that the cutting conductive layer.After the cutting, pedestal 10 half-twists or 180 °, thus form the second spiral conductive layer parts 16 by aforesaid laser nicking.On the whole surface of the spiral current-carrying part 17 between end parts 11 and 12, apply insulating resin 24, as shown in Figure 2.Four terminals 20,21,22 and 23 are applied with weld layer, and cut away from two end lines in two ends 18 and 19 of terminal part.Thereby the common mode choke that forms has the first and second spiral conductive layer parts 15 and 16 insulated from each other, that replace.
The common code impedance of this common mode choke that the impedance analysis device is measured is 300 Ω at 500MHz.
Example 2
With reference to figure 3A and 3B, except pedestal had difformity, the common mode choke of example 2 had the structure identical with the common mode choke of example 1.Even if the polygonal post of the spiral current-carrying part 17 of pedestal 30 ' shown in example 2 figure also can form as the coil in example 1 and 2.The common code impedance of this common mode choke that the impedance analysis device is measured is 290 Ω at 500MHz.
Example 3
Fig. 4 A and 4B illustrate the common mode choke of example 3, except pedestal has difformity, have the structure identical with the common mode choke of example 1.Even if pedestal 30 ' spiral current-carrying part 17 " cylindric shown in example 3 figure also can form as the coil in the example 1.The common code impedance of this common mode choke that the impedance analysis device is measured is 250 Ω at 500MHz.
Example 4
Spiral current-carrying part in the example 1 forms by the laser nicking, but this part in the example 4 is by the formation of sandblasting.Identical in the common mode choke that obtains and the example 1.
Example 5
The spiral current-carrying part of the common mode choke in the example 1 forms by the laser nicking, but this part in the example 5 forms by water spray.Identical in the common mode choke that obtains and the example 1.
Use in the example 5 and 6 with example 1 in identical pedestal.But when the spiral current-carrying part of a pedestal was Fig. 3 A, the 3B of optional example or polygonal post among 4A, the 4B or cylinder, the spiral groove can be by sandblasting or spray water formation.Very clear, can obtain identical effect.
Example 6
Except using different insulators, the common mode choke of example 6 of the present invention has the identical structure of common mode choke with the example 1 shown in Fig. 1 and 2.Therefore, the common mode choke of this example will be by explaining with reference to Fig. 1 and 2.
With reference to Fig. 1 and 2,, form the screw electrode of mutual insulating in intimate contact with this pedestal 10 at the pedestal of making by dielectric or magnetic material 10.The electric conducting material that uses can provide by materials such as coating, spraying or deposited copper, aluminium, silver.This electric conducting material also can remove this adhesive and cure this conducting resinl then and provide by after a kind of conducting resinl of being made by conductive powder and adhesive of coating.
For the spiral current-carrying part 17 shown in Fig. 1, on two double helix shape electrodes 15 and 16 that alternately form, form the insulating barrier of making by dielectric or magnetic material.
Formation such as spiral current-carrying part 17 can be by the laser nicking, sandblast, water spray.
With reference to figure 2, dry then by coating hybrid resin on the surface of the spiral current-carrying part 17 of pedestal and to form resin 24, wherein added soft magnetic material, mixed with insulating resin with the substance dissolves of a kind of solvent and so on by it then with low viscosity.Soft magnetic material and organic bond are mixed, form a thin layer with scraping the skill in using a kitchen knife in cookery, silk screen print method, flattening-out method etc.If in the manufacturing intensity of this thin layer, do not pinpoint the problems, then apply insulating resin and also can be used to this thin layer.
Insulating resin is coated on the thin layer, the reel surface of this spiral current-carrying part 17 of this thin layer, thus form resin 24.Form common mode choke by these methods, include the soft magnetic material in a kind of insulating resin.
Subsequently, at length explain the manufacturing of the common mode choke of example 6 according to the present invention.
On the prismatic pedestal of 1.6 * a 1.0 * 1.0mm who makes by Ni-Zn ferrite, form a conductive layer by 15 microns copper facing with μ '=10.Form the groove 14a of six 20 micron wide spiral forms by the laser nicking at this on coated with the pedestal 10 of metal film.Similarly, form the second spiral conductive layer parts 15 by the laser nicking.
By resin dissolves is prepared epoxy resin in a kind of solvent.Prepare a kind of slurry by mixing this epoxy resin, make to comprise the Ni-Zn ferrite powder, account for 50% of whole slurry, have μ '=10.Slurry is coated on the spiral conductor part 17, and is dry out of doors, as the insulating resin among Fig. 2 24.On four terminals 20,21,22 and 23, carry out the weld layer coating, and two ends 18 and 19 of terminal part cut away from two end lines.The common code impedance of this common mode choke that the impedance analysis device is measured is 580 Ω at 500MHz.
As a reference, with above-mentioned identical method, magnetic material is not mixed in the insulating resin and forms the coil identical with first example.The common code impedance of this common mode choke that the impedance analysis device is measured is 300 Ω at 500MHz.
Example 7
Multi-layer helical common mode choke with reference to figure 5-7 explanation example 7 of the present invention.
With reference to figure 5-6,, form the screw electrode of mutual insulating in intimate contact with this pedestal 10 at the pedestal of making by dielectric or magnetic material 10.The electric conducting material that uses can provide by materials such as coating, spraying or deposited copper, aluminium, silver.This electric conducting material also can remove this adhesive and cure this conducting resinl then and provide by after a kind of conducting resinl of being made by conductive powder and adhesive of coating.
Spiral current-carrying part 28 has the structure of the spiral current-carrying part 28 shown in Fig. 6, wherein by dielectric or magnet 26 between them, the second conductive layer parts 27 is attached on first conductor 25.
Spiral current-carrying part 28 ' can be by the laser nicking, sandblast, formation such as water spray.
With reference to figure 7, by the spiral current-carrying part 28 of pedestal ' the surface on the coating hybrid resin dry then and form resin 35, wherein added soft magnetic material, mixed with insulating resin with the substance dissolves of a kind of solvent and so on by it then with low viscosity.Soft magnetic material and organic bond are mixed, form a thin layer with scraping the skill in using a kitchen knife in cookery, silk screen print method, flattening-out method etc.If in the manufacturing intensity of this thin layer, do not pinpoint the problems, then apply insulating resin and also can be used to this thin layer.
Insulating resin is coated on the thin layer, this thin layer reel this spiral current-carrying part 28 ' the surface, thereby form resin 35.Form common mode choke by these methods, include the soft magnetic material in a kind of insulating resin.
Except this spiral current-carrying part has the double-decker, form identical in common mode choke and the example 6 in the example 7.
The common code impedance of this common mode choke that the impedance analysis device is measured is 630 Ω at 500MHz.
With identical method, can magnetic material be mixed in the insulating resin and make a kind of common mode choke.The common code impedance of this common mode choke that the impedance analysis device is measured is 320 Ω at 500MHz.
Example 8
Except that the insulating layer material difference, identical with the common mode choke structure of example 1 according to the common mode choke of example 8.Therefore, the common mode choke of this example will be by explaining with reference to figure 1.
With the weight with respect to this powder 5% PVB is added to the Ni-Zn ferrite powder, the mixed solvent of additional then ethyl cellosolve and butyl carbinol is rubbed by epicyclic mixer subsequently and is mixed.This pulpous state gluing is by scraping the thin layer that the skill in using a kitchen knife in cookery forms 10 microns.This thin layer is divided into suitable size, and twines around spiral current-carrying part 17 after surface applied epoxy resin.
The common code impedance of this common mode choke that the impedance analysis device is measured is 580 Ω at 500MHz.
With identical method, can magnetic material be mixed in the insulating resin and make a kind of common mode choke.The common code impedance of this common mode choke that the impedance analysis device is measured is 300 Ω at 500MHz.
Though above-mentioned example 6 is cylindric to pedestal two ends and the center in the example 8, can use the cylindric pedestal shown in the polygonal base for post shown in Fig. 3 and Fig. 4.Under the situation of the spiral current-carrying part of polygonal or cylinder pedestal, can clearly obtain identical effect.And, even utilize different soft magnetic materials or insulating resin, also can obtain identical effect.
Example 9
Be applied on the prismatic pedestal of making by dielectric or magnetic material with reference to figure 8 and 9, the first conductive layer parts 41.The electric conducting material that uses can provide by materials such as coating, spraying or deposited copper, aluminium, silver.This conductor also can remove this adhesive and cure this conducting resinl then and provide by after a kind of conducting resinl of being made by conductive powder and adhesive of coating.
Be coated on the surface of the first conductive layer parts 41 by an insulating barrier 42, the second conductive layer parts 43.The insulating barrier 42 and the second conductive layer parts 43 can form as the first conductive layer parts 41.In pedestal, form spiral groove 44, shown in the black thick line among Fig. 8.With the laser nicking or this groove 44 of formation that sandblasts or spray water.Subsequently, electrode 45 and 46 etched first conductive layer 41 that is reduced to of a part, thus form by the terminal shown in the dash area 48 and 49.For the shape of pedestal 40, terminal part 45 and 46 can be a prismatic, and spiral current-carrying part 47 can be polygonal post, cylinder or the like.Under the situation of prismatic shape, rounding R can be in the edge.As shown in figure 10, insulating resin 24 is coated on the whole surface of the conductive layer between the terminal part, and four electrodes 51,52,53 and 54 are by coated with scolder.Therefore, the common mode choke of formation has the first and second spiral conductive layer parts 41 and 43 insulated from each other.About the shape of pedestal 40, terminal part 45 and 46 can be a prismatic, and spiral current-carrying part 47 can be polygonal post, cylinder or the like.
And as other method, the gluing and the adhesive of above-mentioned powder conduction are imprinted on the pedestal by silk screen printing, make to form two spiral conductive layer parts 41 and 43 and insulating barrier 42.Remove this adhesive, and cure this gluing, thereby form common mode choke.
Subsequently, be further explained in detail the manufacturing of the common mode choke of example 6 of the present invention.
As shown in Figure 8, on the prismatic pedestal 40 of 1.6 * 1.0 * 1.0mm that makes by magnet with μ '=30 coated with 15 microns copper metal film.And, as shown in Figure 9, on coated with the pedestal 40 of metal film coated with 15 microns alumina metals film, and subsequently coated with 15 microns copper metal film.Be cut in formation groove 44 in this pedestal 40 by laser.By on the vertical direction of the direction of rotation of pedestal 40, moving this pedestal 40, rotating the groove 44 that this pedestal 40 forms spiral form simultaneously.Subsequently, electrode 46 and 46 etched first conductive layer 41 that is reduced to of a part, thus form terminal 48 and 49.On the whole surface of the spiral conductive layer between end parts 45 and 46, apply insulating resin 55, as shown in Figure 10.Four terminals 51,52,53 and 54 are by coated with scolder.Terminal 53 and 54 in Figure 10 by shown in the shade.Therefore form common mode choke 3, have the spiral conductive layer 41 and 43 of two mutual insulatings.
The common code impedance of this common mode choke that the impedance analysis device is measured is 300 Ω at 500MHz.
Example 10
With reference to figure 3a and 3b, except the spiral current-carrying part of pedestal is the polygonal post, the common mode choke of example 10 has the structure identical with the common mode choke of the 9th example.The common code impedance of this common mode choke that the impedance analysis device is measured is 300 Ω at 500MHz.
Therefore, obtain the result identical with example 10.
Example 11
Except the spiral current-carrying part of pedestal be cylindric, Fig. 4 A has the structure identical with the common mode choke of example 9 with the common mode choke that 4B illustrates example 11.
The common code impedance of this common mode choke that the impedance analysis device is measured is 290 Ω at 500MHz.
Therefore example 11 obtains the result identical with example 9.
Example 12
In the common mode choke shown in the example 9, utilize the laser nicking to form groove 44 so that make spiral current-carrying part 47 '.But in example 12, common mode choke is by the realization of sandblasting.Example 12 also obtains the result identical with example 9.
Example 13
In the common mode choke shown in the example 9, the spiral current-carrying part forms by the laser nicking.But in example 13, common mode choke is realized by water spray.Example 13 also obtains the result identical with example 9.
And, 13 optional example as an example, when the spiral current-carrying part of this pedestal was a polygonal post or a cylinder, the spiral groove can be by sandblasting or spray water formation.Very clear, can obtain similar result.
Example 14
A kind of conductive paste is to prepare by the mixed solvent that uses ethyl cellosolve and butyl carbinol, copper powders may and PVB.In this case, copper powders may is 95: 5 to the ratio of PVD.As shown in Figure 1, this gluing is imprinted on the prismatic pedestal 1.6 * 1.0 * 1.0mm, that made by the magnet with μ '=30, so prints 15 microns first spiral conductor, and be dried subsequently by using the stainless steel wire reticulated printing.Then, be imprinted on alumina layer on this first surface of conductors and subsequent drying, so print and dry second conductor by using a kind of aluminium oxide gluing of independent preparation.This aluminium oxide gluing has the formation identical with the copper gluing.After second conductor is dried, removes adhesive and cure this gluing.As shown in figure 10, apply by coating insulating resin 55 and terminal part and form a common mode choke with scolder.
The common code impedance of this common mode choke that the impedance analysis device is measured is 300 Ω at 500MHz.
Even, can clearly obtain identical result when the spiral current-carrying part of pedestal is polygonal or cylindrical shape as an example during 14 optional example.
As explained above, in example of the present invention, have the spiral conductor of two mutual electric insulations by pedestal magnetic or that dielectric is made, and by this conductive layers of means nicking such as laser.Thereby can be easily and provide economically and have high Q characteristic and seldom resonance frequency and the instable common mode choke of inductance.
And embodiment according to the present invention increases caking property by a kind of magnetic material is mixed into insulating resin, to allow to provide easily and economically the common mode choke of the common mode high impedance that has in the high-frequency range.
And, embodiment according to the present invention, the pedestal of being made by magnetic or dielectric substance has the spiral conductor of two mutual electric insulation laminations.By utilizing means such as nicking or silk screen printing to form the layer of this conductivity, to allow to provide easily and economically instable common mode choke with high Q characteristic and resonance frequency seldom and inductance.
Claims (13)
1. common mode choke comprises:
A pedestal of forming by magnetic material or dielectric substance;
The first and second spiral conductive layers that form and be electrically insulated from each other around this pedestal at the pedestal place;
One first insulating barrier that between the first and second spiral conductive layers, forms or dielectric or magnet;
The first and second spiral conductive layers circumferentially in one second insulating barrier of formation;
Wherein this first spiral conductive layer and this pedestal surface forms contiguously;
This first and second spiral conductive layer is that at least one process by at least one process in coating, spraying and the deposition or by the laser nicking, in sandblasting and spraying water forms, and remove the conductive layer that on pedestal, forms by at least one process in coating, spraying and the deposition, to form groove.
2. according to the common mode choke of claim 1, wherein this second insulating barrier is to comprise that a kind of insulating resin of soft magnet powder is formed.
3. according to the common mode choke of claim 1, at least one in the wherein said first and second spiral conductive layers covered by this second insulating barrier on its surface, and this second insulating barrier is formed by an insulating resin.
4. according to the common mode choke of claim 1, wherein each of the first and second spiral conductive layers has respectively an input and the output at two ends.
5. according to the common mode choke of claim 1, wherein this pedestal has the rotational symmetric post shapes with respect to longitudinally a rotation, and this rotation should be a center line of the first and second spiral conductive layers mutually.
6. according to the common mode choke of claim 5, wherein this pedestal has the prismatic shape with respect to a central axis.
7. according to the common mode choke of claim 1, wherein this pedestal has the prismatic terminal part at two ends, and a spiral conductive layer part between two ends, said spiral conductive layer partly has with respect to the rotational symmetric polygonal post of a central axis or the shape of cylinder.
8. according to the common mode choke of claim 1, wherein electrode is formed as the terminal at the pedestal two ends.
9. common mode choke according to Claim 8, wherein said these electrodes are cut apart so that form four terminals.
10. according to the common mode choke of claim 1, the wherein said first and second spiral conductive layer parts have one of at least a terminal by utilizing the resist etching to form.
11. a common mode choke comprises:
A pedestal of forming by magnetic material or dielectric substance;
Form and vertically go up the first and second spiral conductive layers adjacent one another are around this pedestal along of pedestal;
First insulating barrier that between the first and second spiral conductive layers, forms;
One the first and second spiral conductive layers circumferentially in second insulating barrier of formation, the first and second spiral conductive layers are electrically insulated from each other on by the pedestal on this first insulating barrier;
Wherein this first and second spirals conductive layer all forms contiguously with a surface of this pedestal, and this first and second spirals conductive layer alternately forms on the surface of this pedestal;
The first and second spiral conductive layers are that at least one process by at least one process in coating, spraying and the deposition or by the laser nicking, in sandblasting and spraying water forms, and remove the conductive layer that on pedestal, forms by at least one process in coating, spraying and the deposition, to form groove.
12. according to the common mode choke of claim 11, wherein this first insulating barrier is made by an insulating resin thin layer, comprises a kind of organic bond and a kind of soft magnet powder.
13., wherein be to comprise insulating powder and adhesive one insulation gluing, remove this adhesive subsequently and cure this gluing then, and between this first and second spirals conductive layer, provide this insulating barrier by coating according to the common mode choke of claim 11.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28007999A JP2001102222A (en) | 1999-09-30 | 1999-09-30 | Common mode choke coil and manufacturing method |
| JP280079/1999 | 1999-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1290947A CN1290947A (en) | 2001-04-11 |
| CN1199205C true CN1199205C (en) | 2005-04-27 |
Family
ID=17620027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001290622A Expired - Fee Related CN1199205C (en) | 1999-09-30 | 2000-09-29 | Common-mode choke mounted on lining and its producing method |
Country Status (6)
| Country | Link |
|---|---|
| EP (2) | EP1347473A1 (en) |
| JP (1) | JP2001102222A (en) |
| KR (1) | KR20010067263A (en) |
| CN (1) | CN1199205C (en) |
| SG (1) | SG96573A1 (en) |
| TW (1) | TW508597B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004534474A (en) * | 2001-07-04 | 2004-11-11 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Inductive and capacitive electronic components |
| US8106739B2 (en) | 2007-06-12 | 2012-01-31 | Advanced Magnetic Solutions United | Magnetic induction devices and methods for producing them |
| JP5121606B2 (en) * | 2008-07-09 | 2013-01-16 | 東京特殊電線株式会社 | Spiral coil |
| KR101630090B1 (en) * | 2014-12-24 | 2016-06-13 | 삼성전기주식회사 | Multilayered electronic component and manufacturing method thereof |
| TWI592955B (en) * | 2015-06-25 | 2017-07-21 | Wafer Mems Co Ltd | Embedded passive components and methods of mass production |
| TWI555044B (en) * | 2015-06-25 | 2016-10-21 | Wafer Mems Co Ltd | A method for producing a passive element with a terminal electrode |
| TWI592956B (en) | 2015-06-25 | 2017-07-21 | Wafer Mems Co Ltd | Core inductor production methods |
| US11881343B2 (en) * | 2020-03-13 | 2024-01-23 | Cirrus Logic, Inc. | Layered process-constructed double-winding embedded solenoid inductor |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE888271C (en) * | 1942-04-10 | 1953-08-31 | Siemens Ag | Interference protection choke |
| JPH02256214A (en) * | 1988-06-09 | 1990-10-17 | Tokin Corp | Chip inductor and its manufacture |
| EP0698896B1 (en) * | 1994-08-24 | 1998-05-13 | Yokogawa Electric Corporation | Printed coil |
| US5692290A (en) * | 1994-09-19 | 1997-12-02 | Taiyo Yuden Kabushiki Kaisha | Method of manufacturing a chip inductor |
| JP3139368B2 (en) * | 1995-04-03 | 2001-02-26 | 株式会社村田製作所 | Multilayer common mode choke coil |
| EP0778593B1 (en) * | 1995-12-07 | 2000-11-22 | Co.Ri.M.Me. Consorzio Per La Ricerca Sulla Microelettronica Nel Mezzogiorno | Method for realizing magnetic circuits in an integrated circuit |
| TW342506B (en) * | 1996-10-11 | 1998-10-11 | Matsushita Electric Ind Co Ltd | Inductance device and wireless terminal equipment |
| TW323003U (en) * | 1997-05-23 | 1997-12-11 | Frontier Electronics Co Ltd | Improved inductor structure |
| JP3554209B2 (en) * | 1997-12-17 | 2004-08-18 | 太陽誘電株式会社 | Surface mount type coil parts |
| EP1077455B1 (en) * | 1999-08-19 | 2007-10-17 | Murata Manufacturing Co., Ltd. | Coil component |
-
1999
- 1999-09-30 JP JP28007999A patent/JP2001102222A/en not_active Withdrawn
-
2000
- 2000-09-29 CN CNB001290622A patent/CN1199205C/en not_active Expired - Fee Related
- 2000-09-29 SG SG200005601A patent/SG96573A1/en unknown
- 2000-09-29 KR KR1020000057387A patent/KR20010067263A/en active IP Right Grant
- 2000-09-29 EP EP03012309A patent/EP1347473A1/en not_active Withdrawn
- 2000-09-29 EP EP00121450A patent/EP1089302A1/en not_active Withdrawn
- 2000-09-30 TW TW089120390A patent/TW508597B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CN1290947A (en) | 2001-04-11 |
| TW508597B (en) | 2002-11-01 |
| KR20010067263A (en) | 2001-07-12 |
| SG96573A1 (en) | 2003-06-16 |
| EP1347473A1 (en) | 2003-09-24 |
| JP2001102222A (en) | 2001-04-13 |
| EP1089302A1 (en) | 2001-04-04 |
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