CN101854113A - Power supply filter used for inhibiting coupling of input port and output port and design method - Google Patents
Power supply filter used for inhibiting coupling of input port and output port and design method Download PDFInfo
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- CN101854113A CN101854113A CN200910312613A CN200910312613A CN101854113A CN 101854113 A CN101854113 A CN 101854113A CN 200910312613 A CN200910312613 A CN 200910312613A CN 200910312613 A CN200910312613 A CN 200910312613A CN 101854113 A CN101854113 A CN 101854113A
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Abstract
The invention relates to the technical field of power electronics, in particular to a power supply filter used for inhibiting coupling of an input port and an output port and a design method. The power supply filter is characterized by comprising a shielding shell body which has a nickelized surface and is provided with a filter circuit, wherein the filter circuit is arranged in the shielding shell body provided with the filter circuit; absorption conducting wires provided with shielding layers are arranged at an input end and an output end of the filter in the shell body respectively, and are connected with the filter circuit; a shielding woven sleeve is arranged outside the absorption conducting wires; an inner layer insulating layer, an outer layer insulating layer and a soft magnetic material are arranged between the shielding woven sleeve and wire cores of the absorption conducting wires; and the soft magnetic material is arranged between the inner layer insulating layer and the outer layer insulating layer. The provided power supply filter solves the problems that the input port and the output port of the power support filter cannot be isolated due to the cabinet space limitation, and improves the filtering performance of the filter.
Description
Technical field
The present invention relates to electric and electronic technical field, specifically is power-supply filter and the method for designing that is used to suppress the input/output end port coupling.
Background technology
At present, development along with power electronics and electronics miniaturization technology, Switching Power Supply has become the main interference source in the electronic equipment, because the limitation of inner installing space, a lot of electronic equipments all can't fully be isolated the filter input/output end port when filter is installed, and cause input/output end port electromagnetic coupled to occur, thereby reduce the filtering performance of filter greatly, thereby propose a kind of power-supply filter that is applied to suppress the input/output end port coupling and just seem extremely important.
Summary of the invention
The objective of the invention is to be to provide a kind of and overcome the chassis space restriction and cause the power-supply filter input/output end port to isolate, improve the power-supply filter and the method for designing that are used to suppress the input/output end port coupling of filter filtering performance.
Technical scheme of the present invention is a kind of power-supply filter and method for designing that is used to suppress the input/output end port coupling of design, it is characterized in that: power-supply filter comprises that a plating nickel on surface is equipped with the shield shell of filter circuit, filter circuit is installed in the inside of the shield shell that filter circuit is housed, the absorption lead of band screen is mounted to the filter input and output side of enclosure interior respectively, absorbs lead and links to each other with filter circuit; Absorbing the lead outside has shielding to work out cover, between the core of shielding establishment cover and absorption lead inner insulation layer, outer insulation and soft magnetic material is arranged, and soft magnetic material is between inner insulation layer and outer insulation.
Described shielding establishment cover root weld makes its integral ground in the inside of the shield shell that filter circuit is housed.
The screen count of described shielding braid cover is 63%～67%, and braided wires directly is the tinned copper wire of Φ 0.1mm～0.12mm; Absorb lead in 40MHz～1GHz frequency range, its absorption loss is 3dB～138dB, and core is the copper heart yearn.
Between described shielding establishment cover and filter housing installing hole insulating barrier is arranged.
Advantage of the present invention is to adopt by the absorption lead and the shielding braid cover of heart yearn coating soft magnetic material to form interference shielding absorption lead, the screen shielding that shielding absorbs lead is welded on the filter shell wall, be applicable to cabinet inside frequency height, the electronic device circuitry filtering that length of cable is big and I/O intersects, effectively the rejects trap I/O intercouples.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a shape assumption diagram among the embodiment.
Among the figure: 1, insulating barrier; 2, soft magnetic material; 3, shielding braid cover; 4, the shield shell of filter circuit is housed; 5, absorb lead; 6, core; 7, outer insulation.
Embodiment
As shown in Figure 1, a kind of high-performance power-supply filter that is used to suppress the input/output end port coupling, comprise that a plating nickel on surface is equipped with the shield shell 4 of filter circuit, filter circuit is installed in the inside of the shield shell 4 that filter circuit is housed, the absorption lead 5 of band screen is mounted to the filter input and output side of enclosure interior respectively, absorbs lead 5 and links to each other with filter circuit.Absorbing lead 5 outsides has shielding to work out cover 3, between the core 6 of shielding establishment cover 3 and absorption lead 5 inner insulation layer 1, outer insulation 7 and soft magnetic material 2 is arranged, and soft magnetic material 2 is between inner insulation layer 1 and outer insulation 7.Shielding establishment cover 3 root weld make its integral ground in the inside of the shield shell 4 that filter circuit is housed; The broadband inhibition of cable interference and the absorption of High-frequency Interference have been realized.The screen count of shielding braid cover 3 is 63%～67%, and braided wires directly is the tinned copper wire of Φ 0.1mm～0.12mm; Absorb lead 5 in 40MHz～1GHz frequency range, its absorption loss is 3dB～138dB, and core 6 is the copper heart yearn.Protected with insulating barrier between shielding establishment cover 3 and filter housing installing hole.
Be welded on the filter shell wall because shielding absorbs the screen of lead 5, realized that the broadband that the I/O cable is disturbed suppresses and the absorption of High-frequency Interference, solved the serious problem of filter input/output end port cross-couplings.Filter circuit is made of single or multiple common mode filtering electricity networks and differential mode filtered electrical network, and the shielding case inside of packing into.The common mode filtering circuit comprises one and an above common mode inductance and two and plural common mode ground capacity.The differential mode filter circuit comprises two and plural differential mode inductance and one and more than one differential mode capacitor.Common-mode filter network and differential mode filter network are series in the filter internal wiring.The shield shell 4 that filter circuit is housed is made by the low carbon steel plate of plating nickel on surface.
Claims (4)
1. be used to suppress the power-supply filter and the method for designing of input/output end port coupling, it is characterized in that: comprise that a plating nickel on surface is equipped with the shield shell of filter circuit (4), filter circuit is installed in the inside of the shield shell (4) that filter circuit is housed, the absorption lead (5) of band screen is mounted to the filter input and output side of enclosure interior respectively, absorbs lead (5) and links to each other with filter circuit; Absorb lead (5) outside shielding establishment cover (3) is arranged, between the core (6) of shielding establishment cover (3) and absorption lead (5) inner insulation layer (1), outer insulation (7) and soft magnetic material (2) are arranged, soft magnetic material (2) is between inner insulation layer (1) and outer insulation (7).
2. power-supply filter and the method for designing that is used to suppress the input/output end port coupling according to claim 1 is characterized in that: described shielding establishment cover (3) root weld makes its integral ground in the inside that the shield shell of filter circuit (4) are housed.
3. power-supply filter and the method for designing that is used to suppress the input/output end port coupling according to claim 1, it is characterized in that: the screen count of described shielding braid cover (3) is 63%～67%, and braided wires directly is the tinned copper wire of Φ 0.1mm～0.12mm; Absorb lead (5) in 40MHz～1GHz frequency range, its absorption loss is 3dB～138dB, and core is the copper heart yearn.
4. power-supply filter and the method for designing that is used to suppress the input/output end port coupling according to claim 1 is characterized in that: between described shielding establishment cover (3) and filter housing installing hole insulating barrier is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910312613 CN101854113B (en) | 2009-12-29 | 2009-12-29 | Power supply filter used for inhibiting coupling of input port and output port and design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910312613 CN101854113B (en) | 2009-12-29 | 2009-12-29 | Power supply filter used for inhibiting coupling of input port and output port and design method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101854113A true CN101854113A (en) | 2010-10-06 |
| CN101854113B CN101854113B (en) | 2013-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910312613 Active CN101854113B (en) | 2009-12-29 | 2009-12-29 | Power supply filter used for inhibiting coupling of input port and output port and design method |
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| Country | Link |
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| CN (1) | CN101854113B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108174565A (en) * | 2018-01-05 | 2018-06-15 | 郑州云海信息技术有限公司 | A kind of server power supply cable isolator and decoupling method |
| CN111030114A (en) * | 2019-12-17 | 2020-04-17 | 中国电力科学研究院有限公司 | Anti-hybrid electromagnetic interference device for power end of substation equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2504827Y (en) * | 2001-11-09 | 2002-08-07 | 中国船舶重工集团公司第七研究院第七○一研究所 | Super-broadband power filter for shield room |
| CN201608635U (en) * | 2009-12-29 | 2010-10-13 | 西安开容电子技术有限责任公司 | High-performance power-supply filter used for inhibiting input/output port coupling |
-
2009
- 2009-12-29 CN CN 200910312613 patent/CN101854113B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2504827Y (en) * | 2001-11-09 | 2002-08-07 | 中国船舶重工集团公司第七研究院第七○一研究所 | Super-broadband power filter for shield room |
| CN201608635U (en) * | 2009-12-29 | 2010-10-13 | 西安开容电子技术有限责任公司 | High-performance power-supply filter used for inhibiting input/output port coupling |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108174565A (en) * | 2018-01-05 | 2018-06-15 | 郑州云海信息技术有限公司 | A kind of server power supply cable isolator and decoupling method |
| CN108174565B (en) * | 2018-01-05 | 2020-03-06 | 郑州云海信息技术有限公司 | Decoupling device and decoupling method for server power cable |
| CN111030114A (en) * | 2019-12-17 | 2020-04-17 | 中国电力科学研究院有限公司 | Anti-hybrid electromagnetic interference device for power end of substation equipment |
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| Publication number | Publication date |
|---|---|
| CN101854113B (en) | 2013-09-11 |
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