CN201374230Y - Inductor device, switching power supply, and electronic equipment - Google Patents
Inductor device, switching power supply, and electronic equipment Download PDFInfo
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- CN201374230Y CN201374230Y CN200920006455U CN200920006455U CN201374230Y CN 201374230 Y CN201374230 Y CN 201374230Y CN 200920006455 U CN200920006455 U CN 200920006455U CN 200920006455 U CN200920006455 U CN 200920006455U CN 201374230 Y CN201374230 Y CN 201374230Y
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Abstract
The embodiment of the utility model discloses an inductor device, a switching power supply, and electronic equipment, belongs to the field of electrical inductor technology, and solves the technical problem that the product cost of the prior inductor device is higher because the prior inductor device requires an additional differential mode inductor. The inductor device comprises magnetic cores, wherein, the magnetic cores are opposite to and connected with each other, and form a circle-shaped magnetic loop; a loop boosting part which can increase the amount of the magnetic loop in the magnetic cores is arranged in the magnetic cores; the switching power supply comprises the inductor device disclosed by the embodiment of the utility model; and the electronic equipment comprises the switching power supply disclosed by the embodiment of the utility model and/or the inductor device disclosed by the embodiment of the utility model. The utility model is applied to improve the inductor device.
Description
Technical field
The utility model belongs to the inductance technical field, the Switching Power Supply, the electronic equipment that are specifically related to a kind of inductance device and are provided with this inductance device.
Background technology
Inductance device is the especially important component part in the electric function parts such as Switching Power Supply in the television set of Switching Power Supply.Inductance device interference resistant interference capability is directly connected to the sensitivity of electric function parts such as Switching Power Supply.
Existing inductance device comprises that position magnetic core relative and that the magnetic core position that takes the shape of the letter U that be connected with each other is relative forms the magnetic loop of the cast shown in arrow among Fig. 17.The noise of Switching Power Supply disturbs and comprises that common mode noise and differential mode noise, existing inductance device mainly are to suppress common mode noise and differential mode noise respectively by common mode inductance and differential mode inductance.The inductance value of common mode inductance is divided into two parts, and a part is a coupling inductance, and another part is a leakage inductance, and wherein coupling inductance can be used for suppressing the common mode noise, and leakage inductance can be used for suppressing the differential mode noise.
The inventor finds that in realizing process of the present utility model there is following problem at least in the method that suppresses the differential mode noise in the existing inductance device:
Because the leakage inductance in the common mode inductance of existing inductance device inner magnetic core is lower, and is unsatisfactory to the inhibition effect of differential mode noise, suppresses the differential mode noise so need add differential mode inductance, can cause the cost of product than higher and add differential mode inductance.
The utility model content
The utility model embodiment provides a kind of inductance device, a kind of Switching Power Supply and a kind of electronic equipment, has solved existing inductance device and need add differential mode inductance and then cause product cost to compare technical problems of high.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
This inductance device, comprise the magnetic core that the position is relative and be connected with each other, the relative described magnetic core in position forms the magnetic loop of cast, is provided with in the relative described magnetic core in position to increase circuit unit, describedly increases the number that circuit unit can increase magnetic loop in the relative described magnetic core in position.
Further, this inductance device comprises two described magnetic cores that the position is relative, and described magnetic core all takes the shape of the letter U, and described two connecting portions that increase relative with the position respectively described magnetic core of circuit unit link to each other.
Further, the described circuit unit that increases is that permeability magnetic material is made.
Further, the described circuit unit that increases is identical with the material of described magnetic core.
Further, it is described that to increase circuit unit T-shaped, the described magnetic core that its top is located on two one of them connecting portions of connecting portion of the relative described magnetic core in position and the two ends at its top are relative with the position respectively links to each other, and extend towards two connecting portions another connecting portion wherein of described magnetic core its bottom.
Further, the described circuit unit that increases is bar shaped, and the one end is located on two one of them connecting portions of connecting portion of the relative described magnetic core in position, and its other end extends towards two connecting portions another connecting portion wherein of described magnetic core.
Further, also be provided with support on the relative described magnetic core in position, described support comprises locating support and increases the road support, and described locating support is fixedly arranged on respectively on the relative described magnetic core in position, and the described road support that increases is provided with the described circuit unit that increases.
Further, describedly increase the T-shaped or bar shaped of road support, the one end is positioned on two one of them connecting portions of connecting portion of the relative described magnetic core in position, and the other end extends towards two connecting portions another connecting portion wherein of described magnetic core.
This Switching Power Supply comprises the inductance device that above-mentioned the utility model embodiment is provided.
This electronic equipment, comprise Switching Power Supply that above-mentioned the utility model embodiment is provided and or the inductance device that provided of above-mentioned the utility model embodiment.
Compared with prior art, the utility model provides the arbitrary technical scheme in the technique scheme to have following advantage:
Be provided with in the relative magnetic core in position in the inductance device that the utility model embodiment is provided and increase circuit unit, increasing circuit unit can increase the number of magnetic loop in the relative magnetic core in position, because the number of magnetic loop is many more in the magnetic core, leakage inductance in the common mode inductance of magnetic core is also high more, its interference performance to the promptly anti-differential mode noise of inhibition ability of differential mode noise is also strong more, and then also need not to add again differential mode inductance to increase the leakage inductance in the magnetic core, simultaneously, the cost that increases circuit unit need add differential mode inductance and then cause product cost to compare technical problems of high so solved existing inductance device less than differential mode inductance.
Description of drawings
Fig. 1 is the magnetic loop schematic diagram of existing inductance device;
Master when Fig. 2 is provided with upper bracket for inductance device that embodiment of the present utility model provided looks schematic diagram;
The master who is provided with when increasing circuit unit on the support of Fig. 3 for the inductance device that embodiment of the present utility model shown in Figure 2 provided looks schematic diagram;
Fig. 4 is the magnetic loop schematic diagram of the inductance device that embodiment of the present utility model shown in Figure 3 provided.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described in detail.
The utility model embodiment provides a kind of inhibition ability of differential mode noise than inductance device higher and that cost is lower.
As Fig. 2 and Fig. 3, the inductance device that the utility model embodiment is provided, comprise the magnetic core 1,2 that the position is relative and be connected with each other, the relative magnetic core 1,2 in position forms the magnetic loop shown in arrow among Fig. 47 of cast, be provided with in the relative magnetic core in position and increase circuit unit 6, increase the number that circuit unit 6 can increase magnetic loop in the relative magnetic core in position.
The relative magnetic core 1 in position in the inductance device in the present embodiment, be provided with in 2 and increase circuit unit 6, increase circuit unit 6 and can increase the relative magnetic core in position 1, the number of magnetic loop in 2, because the number of magnetic loop is many more in the magnetic core, leakage inductance in the common mode inductance of magnetic core is also high more, its interference performance to the promptly anti-differential mode noise of inhibition ability of differential mode noise is also strong more, and then also need not to add again differential mode inductance to increase the leakage inductance in the magnetic core, simultaneously, the cost that increases circuit unit 6 need add differential mode inductance and then cause product cost to compare technical problems of high so solved existing inductance device less than differential mode inductance.
This inductance device comprises two magnetic cores 1,2 that the position is relative, and magnetic core all takes the shape of the letter U, and two connecting portions that increase relative with the position respectively magnetic core of circuit unit 61,2 link to each other.Increase circuit unit 6 and can increase by two less magnetic loops as shown in Figure 4 in the magnetic loop in magnetic core, and then increase leakage inductance in this inductance device, improve its inhibition ability the differential mode noise.
Increasing circuit unit 6 makes for permeability magnetic material.On the one hand, permeability magnetic material is made increases circuit unit 6 and can form magnetic loop reliably, and permeability magnetic material is lower with respect to the cost of the differential mode inductance that existing inductance device increased on the other hand.
It is identical with the material of magnetic core to increase circuit unit 6.It is identical with the material of magnetic core to increase circuit unit 6, is convenient to draw materials on the one hand, and after increasing circuit unit 6 on the other hand and magnetic core 1,2 being connected, formed magnetic loop stability is relatively good.
Increase circuit unit 6 in the present embodiment and be as shown in Figure 3 T shape, the magnetic core 1,2 that its top is located on two one of them connecting portions of connecting portion of the relative magnetic core in position 1,2 and the two ends at its top are relative with the position respectively links to each other, and extend towards two connecting portions another connecting portion wherein of magnetic core its bottom.Circuit unit 6 magnetic core relative with the position 1,2 of increasing in this design connects more reliably, and then the magnetic loop that forms is also comparatively stable.
Increase circuit unit 6 in the present embodiment and also can be as shown in Figure 4 bar shaped, the one end is located on two one of them connecting portions of connecting portion of the relative magnetic core in position 1,2, and its other end extends towards two connecting portions another connecting portion wherein of magnetic core.The circuit unit 6 that increases of this structure is relatively saved material.
Also be provided with support on the relative magnetic core 1,2 in position, support comprises locating support 4 and increases road support 3, and locating support 4 is fixedly arranged on respectively on the relative magnetic core in position 1,2, increases road support 3 and is provided with and increases circuit unit 6.Each magnetic core that takes the shape of the letter U 1,2 outer coil 5 that all are wound with, locating support 4 is sheathed on outside magnetic core 1,2 and the coil 5, increase circuit unit 6 be located at increase on the road support 3 be convenient on the one hand install, dismounting, it can make provided thereon increasing between circuit unit 6 magnetic core relative with the position 1,2 can keep certain clearance on the other hand.The size in gap can be used for controlling the size of this inductance device leakage inductance.
As shown in Figure 2, increase the 3 T-shaped or bar shapeds as shown in Figure 4 of road support, the one end is positioned on two one of them connecting portions of connecting portion of the relative magnetic core in position 1,2, and the other end extends towards two connecting portions another connecting portion wherein of magnetic core.Can increase permeability magnetic material in increasing on the road support 3, increase circuit unit 6 thereby it is become.
The Switching Power Supply that the utility model embodiment is provided comprises the inductance device that above-mentioned the utility model embodiment is provided.
The electronic equipment that the utility model embodiment is provided, comprise Switching Power Supply that above-mentioned the utility model embodiment is provided and or the inductance device that provided of above-mentioned the utility model embodiment.
With above-mentioned the utility model embodiment in like manner, because the identical technique effect of inductance device that is provided with above-mentioned the utility model embodiment is provided its interior inductance device of Switching Power Supply that the utility model embodiment is provided and electronic equipment, and can solve identical technical problem.
The above; it only is embodiment of the present utility model; but protection range of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range of claim.
Claims (10)
1, a kind of inductance device, comprise the magnetic core that the position is relative and be connected with each other, the relative described magnetic core in position forms the magnetic loop of cast, it is characterized in that: be provided with in the relative described magnetic core in position and increase circuit unit, describedly increase the number that circuit unit can increase magnetic loop in the relative described magnetic core in position.
2, inductance device according to claim 1 is characterized in that: this inductance device comprises two described magnetic cores that the position is relative, and described magnetic core all takes the shape of the letter U, and described two connecting portions that increase relative with the position respectively described magnetic core of circuit unit link to each other.
3, inductance device according to claim 2 is characterized in that: the described circuit unit that increases is that permeability magnetic material is made.
4, inductance device according to claim 3 is characterized in that: the described circuit unit that increases is identical with the material of described magnetic core.
5, inductance device according to claim 3, it is characterized in that: described to increase circuit unit T-shaped, the described magnetic core that its top is located on two one of them connecting portions of connecting portion of the relative described magnetic core in position and the two ends at its top are relative with the position respectively links to each other, and extend towards two connecting portions another connecting portion wherein of described magnetic core its bottom.
6, inductance device according to claim 3, it is characterized in that: the described circuit unit that increases is bar shaped, the one end is located on two one of them connecting portions of connecting portion of the relative described magnetic core in position, and its other end extends towards two connecting portions another connecting portion wherein of described magnetic core.
7, inductance device according to claim 3, it is characterized in that: also be provided with support on the relative described magnetic core in position, described support comprises locating support and increases the road support, described locating support is fixedly arranged on respectively on the relative described magnetic core in position, and the described road support that increases is provided with the described circuit unit that increases.
8, inductance device according to claim 7, it is characterized in that: describedly increase the T-shaped or bar shaped of road support, the one end is positioned on two one of them connecting portions of connecting portion of the relative described magnetic core in position, and the other end extends towards two connecting portions another connecting portion wherein of described magnetic core.
9, a kind of Switching Power Supply is characterized in that: comprise aforesaid right requirement 1 to 8 described inductance device.
10, a kind of electronic equipment is characterized in that: comprise aforesaid right requirement 9 described Switching Power Supplies and or aforesaid right requirement 1 to 8 described inductance device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920006455U CN201374230Y (en) | 2009-03-12 | 2009-03-12 | Inductor device, switching power supply, and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920006455U CN201374230Y (en) | 2009-03-12 | 2009-03-12 | Inductor device, switching power supply, and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201374230Y true CN201374230Y (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920006455U Expired - Fee Related CN201374230Y (en) | 2009-03-12 | 2009-03-12 | Inductor device, switching power supply, and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201374230Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740196A (en) * | 2010-02-11 | 2010-06-16 | 上海汇慧电子通讯有限公司 | Common and differential mode inductor |
-
2009
- 2009-03-12 CN CN200920006455U patent/CN201374230Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101740196A (en) * | 2010-02-11 | 2010-06-16 | 上海汇慧电子通讯有限公司 | Common and differential mode inductor |
| CN101740196B (en) * | 2010-02-11 | 2012-09-05 | 上海汇慧电子通讯有限公司 | Common and differential mode inductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091230 Termination date: 20130312 |