CN211742822U - Differential-common mode integrated inductor structure - Google Patents
Differential-common mode integrated inductor structure Download PDFInfo
- Publication number
- CN211742822U CN211742822U CN202020594883.4U CN202020594883U CN211742822U CN 211742822 U CN211742822 U CN 211742822U CN 202020594883 U CN202020594883 U CN 202020594883U CN 211742822 U CN211742822 U CN 211742822U
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- Prior art keywords
- magnetic core
- electrical connection
- connection device
- common mode
- differential
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- 239000000463 material Substances 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 6
- 239000000696 magnetic material Substances 0.000 claims description 4
- 229910000702 sendust Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims 3
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims 1
- 230000035699 permeability Effects 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 1
- -1 iron-silicon-aluminum Chemical compound 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Abstract
The utility model discloses poor integrated inductance structure of common mode, including first magnetic core, second magnetic core, first electrical connection device and second electrical connection device, the second magnetic core nests in first magnetic core, and first electrical connection device and second electrical connection device pass first magnetic core respectively, and first electrical connection device still passes the second magnetic core. The first magnetic core is nested in the first magnetic core side by side with the second magnetic core, and the second electrical connection device further penetrates through the third magnetic core. The first magnetic core forms a common mode inductor, and the second magnetic core and the third magnetic core form two differential mode inductors. The utility model discloses small volume just has high value characteristic.
Description
Technical Field
The utility model relates to an inductance technical field, in particular to poor common mode integrated inductance structure.
Background
With the introduction of semiconductor devices, the switching action brings more and more serious Electromagnetic Interference (EMI). Electromagnetic noise affects equipment such as power supplies, loads, communication and the like through loop or space propagation, and the international standard of electromagnetic interference is provided for industrial equipment. The automotive industry is concerned with the volume requirements of sub-components, and with the rise of electric vehicles, higher requirements are also put on the EMI design of the electric vehicles.
The existing conductive EMI suppression method mainly adds a filter device, and usually adds filter inductors in both the common mode loop and the differential mode loop. In order to utilize space, an EE type or EI type magnetic core is usually adopted to integrate the differential mode and the common mode into a whole at present, but because the differential mode current is large, in order to avoid the problem of magnetic saturation, the central column is usually provided with air information, so that the actual differential mode inductance value is small, and the filtering effect is limited.
Disclosure of Invention
The utility model aims at the defect that above-mentioned prior art exists, provide a little volume and have the poor common mode integrated inductance structure of high inductance value characteristic.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a differential-mode and common-mode integrated inductor structure comprises a first magnetic core, a second magnetic core, a first electrical connecting device and a second electrical connecting device, wherein the second magnetic core is nested in the first magnetic core, the first electrical connecting device and the second electrical connecting device respectively penetrate through the first magnetic core, and the first electrical connecting device also penetrates through the second magnetic core.
The utility model discloses a further technical scheme is: the first magnetic core is nested in the first magnetic core side by side with the second magnetic core, and the second electrical connection device further penetrates through the third magnetic core.
The utility model discloses a further technical scheme is: the first magnetic core is made of a high-permeability material.
The utility model discloses a further technical scheme is: the first magnetic core is Mn-Zn ferrite or a nano-gold material.
The utility model discloses a further technical scheme is: the second magnetic core and the third magnetic core are made of high magnetic saturation range materials.
The utility model discloses a further technical scheme is: the second magnetic core and the third magnetic core are made of iron-silicon-aluminum or iron-silicon powder.
The utility model discloses a further technical scheme is: the second magnetic core and the third magnetic core are made of different magnetic materials.
The utility model discloses a further technical scheme is: the first electrical connection device and the second electrical connection device are respectively a positive electrode conductor and a negative electrode conductor.
The utility model discloses poor integrated inductance structure of common mode has following beneficial effect: the utility model discloses an optimization on the spatial structure nests third magnetic core and second magnetic core in first magnetic core side by side to utilize different magnetic material's advantage, realized the design optimization of wave filter on volume and characteristic, and then increase the core competitiveness such as output characteristic, power density of place product.
The differential-mode and common-mode integrated inductor structure of the present invention will be further described with reference to the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic plan view of a differential-mode and common-mode integrated inductor structure according to a first embodiment of the present invention;
fig. 2 is a schematic perspective view of a first embodiment of a differential-mode and common-mode integrated inductor structure according to the present invention;
fig. 3 is a schematic structural diagram after the differential-common mode integrated inductor structure of the present invention is packaged;
fig. 4 is a schematic structural diagram of a second embodiment of the differential-mode and common-mode integrated inductor structure of the present invention;
the reference numbers illustrate: 1-first magnetic core, 2-second magnetic core, 3-third magnetic core, 4-first electrical connection means, 5-second electrical connection means, 6-module housing.
Detailed Description
The first embodiment is as follows: as shown in fig. 1 and 2, the utility model relates to a difference common mode integrated inductance structure, including first magnetic core 1, second magnetic core 2, first electrical connection device 4 and second electrical connection device 5, second magnetic core 2 nests in first magnetic core 1, and first electrical connection device 4 and second electrical connection device 5 pass first magnetic core 1 respectively, and first electrical connection device 4 still passes second magnetic core 2. In this embodiment, a third magnetic core 3 is further included, the third magnetic core 3 is nested in the first magnetic core 1 side by side with the second magnetic core 2, and the second electrical connection device 5 further passes through the third magnetic core 3. The first magnetic core 1 constitutes a common mode inductor, and the second magnetic core 2 and the third magnetic core 3 constitute two differential mode inductors.
The first magnetic core 1 is made of a high-permeability material, and the first magnetic core 1 can be made of Mn-Zn ferrite or a nano-gold material and is used for efficiently filtering common-mode noise. The second magnetic core 2 and the third magnetic core 3 are made of high magnetic saturation range materials, the second magnetic core 2 and the third magnetic core 3 are made of sendust or sendust and are used for filtering out differential mode noise and avoiding magnetic core saturation, and the second magnetic core 2 and the third magnetic core 3 can be made of different magnetic materials. The first electrical connection device 4 and the second electrical connection device 5 are respectively a positive electrode conductor and a negative electrode conductor. The utility model discloses during the use plastic envelope in module housing 6, as shown in fig. 3, first magnetic core 1, second magnetic core 2, third magnetic core 3 are all by the plastic envelope in module housing 6, and only first electrical connection device 4 and 5 partial contact portions of second electrical connection device expose outside module housing 6. As an alternative form of the present invention, the first electrical connection device 4 and the second electrical connection device 5 may also be wound on a magnetic pole formed by the first magnetic core 1, the second magnetic core 2, and the third magnetic core 3.
Example two: the third magnetic core can be omitted as required, see fig. 4, in this case, only the second magnetic core 2 is nested in the first magnetic core 1, the first electrical connection device 4 and the second electrical connection device 5 respectively pass through the first magnetic core 1, the first electrical connection device 4 also passes through the second magnetic core 2, and the rest of the structure is the same as that of the first embodiment.
The above embodiments are only preferred embodiments of the present invention, the structure of the present invention is not limited to the forms illustrated in the above embodiments, and any modifications, equivalent substitutions and the like made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (8)
1. The utility model provides a difference common mode integrated inductance structure, its characterized in that includes first magnetic core (1), second magnetic core (2), first electrical connection device (4) and second electrical connection device (5), second magnetic core (2) nestification is in first magnetic core (1), and first electrical connection device (4) and second electrical connection device (5) pass first magnetic core (1) respectively, and first electrical connection device (4) still pass second magnetic core (2).
2. A differential-and-common mode integrated inductive structure according to claim 1, further comprising a third magnetic core (3), the third magnetic core (3) being nested side by side with the second magnetic core (2) within the first magnetic core (1), the second electrical connection means (5) further passing through the third magnetic core (3).
3. A differential-and-common mode integrated inductive structure according to claim 2, characterized in that the first magnetic core (1) is a high permeability material.
4. A differential-and-common mode integrated inductive structure according to claim 3, characterized in that the first magnetic core (1) is Mn-Zn ferrite or nanogold material.
5. A differential-and-common mode integrated inductor structure according to claim 2, characterized in that the second (2) and third (3) magnetic cores are high magnetic saturation range materials.
6. A differential-and-common mode integrated inductor structure according to claim 5, characterized in that the second (2) and third (3) magnetic cores are sendust or ferrosilicon powder cores.
7. A differential-and-common mode integrated inductor structure according to claim 6, characterized in that the second (2) and third (3) magnetic cores are of different magnetic materials.
8. A differential-and-common mode integrated inductor structure according to claim 2, characterized in that the first electrical connection means (4) and the second electrical connection means (5) are a positive conductor and a negative conductor, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020594883.4U CN211742822U (en) | 2020-04-20 | 2020-04-20 | Differential-common mode integrated inductor structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020594883.4U CN211742822U (en) | 2020-04-20 | 2020-04-20 | Differential-common mode integrated inductor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211742822U true CN211742822U (en) | 2020-10-23 |
Family
ID=72850810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020594883.4U Expired - Fee Related CN211742822U (en) | 2020-04-20 | 2020-04-20 | Differential-common mode integrated inductor structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211742822U (en) |
-
2020
- 2020-04-20 CN CN202020594883.4U patent/CN211742822U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201023 |
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| CF01 | Termination of patent right due to non-payment of annual fee |