CN101388277B - Transformer - Google Patents
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- CN101388277B CN101388277B CN2008101356709A CN200810135670A CN101388277B CN 101388277 B CN101388277 B CN 101388277B CN 2008101356709 A CN2008101356709 A CN 2008101356709A CN 200810135670 A CN200810135670 A CN 200810135670A CN 101388277 B CN101388277 B CN 101388277B
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Abstract
The invention relates to a transformer and a mutual inductance adjustment method, wherein the transformer is suitably arranged in a circuit base plate, and comprises a first plane coil and a second plane coil. The first plane coil comprises a plurality of first coils, and the second plane coil comprises a plurality of second coils, a first coil bunch which is formed by at least two adjacent first coils is mutually crossed over a second coil bunch which is formed by at least two adjacent second coils.
Description
Technical field
The present invention relates to a kind of transformer, and particularly relevant for a kind of through the transformer that internal wiring constituted in the circuit base plate.
Background technology
In balance-non-equilibrium filter, can produce mutual inductance through mutual coupled magnetic field between two inductance that constitute transformer, to be responsible for single-ended transmitting differential signal.Under the trend of miniaturization of electronic products, some electronic component has been integrated in the circuit base plate, for example passive devices such as electric capacity, inductance and resistance.Two of transformer can be made up of the configuration of circuit base plate the inductance that coil constituted.
Fig. 1 illustrates a kind of layout of existing transformer.Please with reference to Fig. 1, existing transformer 100 has and in fact all is positioned at conplane two coils (plane coil) 110 and 120, a plurality of pitch of the laps (loop) cross arrangement in regular turn from inside to outside that it had respectively.Under specific circuit design, can adjust the two mutual inductance value (mutualinductance) through the size of adjusting two coils 110 and 120.Yet the size of adjusting two coils 110 and 120 also can change the two self-induction value (self-inductance) separately, and this makes the layout of transformer 100 not have design flexibility.
Fig. 2 illustrates the layout of another kind of existing transformer.Please with reference to Fig. 2, existing transformer 200 has and is positioned at conplane two adjacent coils 210 and 220 in fact.Transformer 200 needs through adjusting distance between this two coil 210 and 220 to adjust the two mutual inductance value.Yet though the distance of adjusting between this two coil 210 and 220 can not change the two self-induction value separately, this can increase the layout area of transformer 200.
Summary of the invention
The present invention proposes a kind of transformer, can increase the design flexibility of its layout.
The present invention proposes a kind of mutual inductance value regulating method, and it can adjust the mutual inductance value under the situation that does not influence the self-induction value.
For specifically describing content of the present invention, at this a kind of transformer is provided, be suitable for being disposed in the circuit base plate.Transformer comprises one first planar coil and one second planar coil, and wherein first planar coil has a plurality of first pitch of the laps, and second planar coil has a plurality of second pitch of the laps.And the one second pitch of the laps bundle that one first pitch of the laps bundle that at least two neighbors of these first pitch of the laps are constituted and at least two neighbors of these second pitch of the laps are constituted is crossed over each other.
In one embodiment of this invention, one first line segment of these first pitch of the laps is between two neighbors of these second pitch of the laps.
In one embodiment of this invention, one second line segment of these second pitch of the laps is between two neighbors of these first pitch of the laps.
In one embodiment of this invention, circuit base plate has an insulating barrier, and each first pitch of the laps of first planar coil all comprises one first common line segment, one first cross-over connection line segment and one first conduction duct.The first cross-over connection line segment and the first common line segment lay respectively at the both sides of insulating barrier, and the first conduction duct is passed insulating barrier and connected the first common line segment and the first cross-over connection line segment.
Each second pitch of the laps of second planar coil all comprises one second common line segment, one second cross-over connection line segment and one second conduction duct, and wherein the second common line segment and the first common line segment are distributed in fact on the same plane.The second cross-over connection line segment and the second common line segment lay respectively at the both sides of insulating barrier, and the second conduction duct is passed insulating barrier and connected the second common line segment and the second cross-over connection line segment.
These first cross-over connection line segments of the first pitch of the laps bundle projection in the plane and these second common line segment intersections of the second pitch of the laps bundle, and these second cross-over connection line segments of the second pitch of the laps bundle projection in the plane and these first common line segment intersections of the first pitch of the laps bundle.
In one embodiment of this invention; The first common line segment of at least one first pitch of the laps intersects on projection plane with the first cross-over connection line segment of another first pitch of the laps at least, and insulating barrier is disposed between the first cross-over connection line segment of the first common line segment and another first pitch of the laps of first pitch of the laps.
In one embodiment of this invention; The second common line segment of at least one second pitch of the laps intersects on projection plane with the second cross-over connection line segment of another second pitch of the laps at least, and insulating barrier is disposed between the second cross-over connection line segment of the second common line segment and another second pitch of the laps of second pitch of the laps.
The present invention proposes a kind of mutual inductance value regulating method, is suitable for adjusting one first planar coil of a transformer and the mutual inductance value between one second planar coil.First planar coil has a plurality of first pitch of the laps, and second planar coil has a plurality of second pitch of the laps.First pitch of the laps comprises at least one first inner ring and at least one first outer ring, and second pitch of the laps comprises at least one second inner ring and at least one second outer ring, and first inner ring and second inner ring are striden mutually.
Mutual inductance value regulating method is included under the situation of the position of keeping first outer ring and second outer ring, adjusts the position of first inner ring and second inner ring, to change the overlapping area of first inner ring and second inner ring.
In one embodiment of this invention, when first inner ring is between 2 second pitch of the laps, adjust the position of first inner ring and 2 second pitch of the laps.
In one embodiment of this invention, when second inner ring is between 2 first pitch of the laps, adjust the position of second inner ring and 2 first pitch of the laps.
Hold the above, the present invention can be under the situation of the quantity of the quantity of keeping first pitch of the laps and second pitch of the laps, adjustment constitute the first pitch of the laps bundle first pitch of the laps quantity and constitute the quantity of second pitch of the laps of the second pitch of the laps bundle.Therefore, in the mutual inductance value of the present invention between first and second planar coil of adjustment, can not influence first and second planar coil self-induction value separately, also can significantly not increase the layout area of transformer.
For let above and other objects of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts embodiment, and cooperates appended graphic elaborating as follows.
Description of drawings
Fig. 1 illustrates a kind of layout of existing transformer;
Fig. 2 illustrates the layout of another kind of existing transformer;
Fig. 3 illustrates the layout of the transformer of one embodiment of the invention;
Fig. 4 illustrates among Fig. 3 the section along the I-I line segment;
Fig. 5 illustrates among Fig. 3 the section along the II-II line segment;
Fig. 6 illustrates among Fig. 3 the section along the III-III line segment;
Fig. 7 illustrates among Fig. 3 the section along the IV-IV line segment.
[main element symbol description]
100,200,300: transformer
110,210,310: the first planar coils
120,220,320: the second planar coils
312,312a-c: first pitch of the laps
322,322a-c: second pitch of the laps
400: circuit base plate
410: insulating barrier
A1, A2: zone
B1: the first pitch of the laps bundle
B2: the second pitch of the laps bundle
C1: the first cross-over connection line segment
C2: the second cross-over connection line segment
G1: the first common line segment
G2: the second common line segment
L1: first line segment
L2: second line segment
O: overlapping region
V1: the first conduction duct
V2: the second conduction duct
Embodiment
Fig. 3 illustrates the layout of the transformer of one embodiment of the invention.Please with reference to Fig. 3, the transformer 300 of present embodiment is suitable for being disposed in the circuit base plate 400, and wherein circuit base plate 400 for example is printed circuit board (PCB) or electronic packaging support plate.The layout of transformer 300 comprises one first planar coil 310 and one second planar coil 320, and it all is that internal wiring by circuit base plate 400 constitutes.Aforesaid circuit base plate 400 comprises that insulating barrier that a plurality of line layers, a plurality of and these line layers are overlapping in regular turn passes the conduction duct (conductive via) that these insulating barriers are connected these line layers with a plurality of, and wherein the internal wiring of circuit base plate 400 comprises these line layers and these conduction ducts.
First planar coil 310 has a plurality of first pitch of the laps 312 that connect in regular turn (Fig. 3 only illustrates three first pitch of the laps 312a-c as representative).Second planar coil 320 has a plurality of second pitch of the laps 322 that connect in regular turn (Fig. 3 only illustrates three second pitch of the laps 322a-c as representative).In the present embodiment, many adjacent first pitch of the laps 312 constitute one first pitch of the laps bundle B1, and many second adjacent pitch of the laps 322 constitute one second pitch of the laps bundle B2, and the first pitch of the laps bundle B1 and the second pitch of the laps bundle B2 cross over each other.
Adjust the mutual inductance value of the first pitch of the laps bundle B1 and the second pitch of the laps bundle B2 in the scope that can be crossed in the present embodiment, through the size of adjusting the first pitch of the laps bundle B1 and the second pitch of the laps bundle B2 at the first pitch of the laps 312a and the second pitch of the laps 322a of outermost.It should be noted that the mutual inductance value of the adjustment first pitch of the laps bundle B1 and the second pitch of the laps bundle B2 can not influence the self-induction value of the first pitch of the laps bundle B1 and the second pitch of the laps bundle B2, also can significantly not increase the layout area of transformer 300.Therefore, compare existing transformer 100 (please with reference to Fig. 1), the layout of the transformer 300 of present embodiment has bigger design flexibility.
Please with reference to the regional A1 of Fig. 3, in the present embodiment, the one first line segment L1 of the first pitch of the laps 312c can be between two adjacent second pitch of the laps 322b and 322c.Likewise, please with reference to the regional A2 of Fig. 3, in the present embodiment, the one second line segment L2 of the second pitch of the laps 322c can be between two adjacent first pitch of the laps 312b and 312c.
Fig. 4 illustrates among Fig. 3 the section along the I-I line segment.Please be simultaneously with reference to Fig. 3 and Fig. 4, in the present embodiment, circuit base plate 400 comprises an insulating barrier 410.Each first pitch of the laps 312 of first planar coil 310 all can have one first common line segment (general segment) G1, one first cross-over connection line segment (crossing segment) C1 and one first conduction duct (conductive via) V1.The first cross-over connection line segment C1 and the first common line segment G1 lay respectively at the both sides of insulating barrier 410, connect the first common line segment G1 and the first cross-over connection line segment C1 and the first conduction duct V1 passes insulating barrier 410.
Fig. 5 illustrates among Fig. 3 the section along the II-II line segment.Please be simultaneously with reference to Fig. 3 and Fig. 5; In present embodiment; Each second pitch of the laps 322 of second planar coil 320 all can have one second common line segment G2, one second cross-over connection line segment C2 and one second conduction duct V2, and wherein the second common line segment G2 and the first common line segment G1 are distributed in fact on the same plane.The second cross-over connection line segment C2 and the second ordinary lines G2 section lay respectively at the both sides of insulating barrier 410, connect the second common line segment G2 and the second cross-over connection line segment C2 and the second conduction duct V2 passes insulating barrier 410.
Please once more with reference to Fig. 3 and Fig. 4, in present embodiment, the first cross-over connection line segment C1 of first pitch of the laps bundle B1 projection and the second common line segment G2 of the second pitch of the laps bundle B2 in the plane intersects.In addition, in present embodiment, the second common line segment G2 of the first cross-over connection line segment C1 of the first pitch of the laps bundle B1 and the second pitch of the laps bundle B2 lays respectively at the both sides of insulating barrier 410.
Please once more with reference to Fig. 3 and Fig. 5, in present embodiment, the second cross-over connection line segment C2 of second pitch of the laps bundle B2 projection and the first common line segment G1 of the first pitch of the laps bundle B1 in the plane intersects.In addition, in present embodiment, the first common line segment G1 of the second cross-over connection line segment C2 of the second pitch of the laps bundle B2 and the first pitch of the laps bundle B1 lays respectively at the both sides of insulating barrier 410.
Fig. 6 illustrates among Fig. 3 the section along the III-III line segment.Please be simultaneously with reference to Fig. 3 and Fig. 6, in the present embodiment, the two first common line segment G1 of two first pitch of the laps 312a, 312b and the first cross-over connection line segment C1 of another first pitch of the laps 312c intersect on projection plane.And insulating barrier 410 is disposed between the first cross-over connection line segment C1 of two first common line segment G1 and another first pitch of the laps 312c of two first pitch of the laps 312a, 312b.It should be noted that present embodiment is not the first pitch of the laps number that intersects on the projection plane in order to be defined in.For instance, also can be that 3 first common line segments of 3 first pitch of the laps and the first cross-over connection line segment of another first pitch of the laps intersect on projection plane, in other words, the first pitch of the laps number that on projection plane, intersects is decided by the design requirement of transformer.
Fig. 7 illustrates among Fig. 3 the section along the IV-IV line segment.Please be simultaneously with reference to Fig. 3 and Fig. 7, in the present embodiment, the two second common line segment G2 of two second pitch of the laps 322a, 322b and the second cross-over connection line segment C2 of another second pitch of the laps 322c intersect on projection plane.And insulating barrier 410 is disposed between the second cross-over connection line segment C2 of two second common line segment G2 and another second pitch of the laps 322c of two second pitch of the laps 322a, 322b.It should be noted that present embodiment is not the second pitch of the laps number that intersects on the projection plane in order to be defined in.For instance, also can be that 3 second common line segments of 3 second pitch of the laps and the second cross-over connection line segment of another second pitch of the laps intersect on projection plane, in other words, the second pitch of the laps number that on projection plane, intersects is decided by the design requirement of transformer.
In addition; Please once more with reference to Fig. 3, in present embodiment, in the first pitch of the laps 312a-c; The first pitch of the laps 312c is than the core near first planar coil 310; So can classify as first inner ring, and the first pitch of the laps 312a, 312b are near the periphery of first planar coil 310, so can classify as first outer ring.In like manner, in the second pitch of the laps 322a-c, the second pitch of the laps 322c is near the core of second planar coil 320, thus can classify as second inner ring, and the second pitch of the laps 322a, 322b are than the periphery near second planar coil 320, so can classify as second outer ring.And, adjust the self-induction value of whole first planar coil 310 of adjustable positions of first outer ring (i.e. the first pitch of the laps 312a, 312b), adjust the self-induction value of whole second planar coil 320 of adjustable positions of second outer ring (i.e. the second pitch of the laps 322a, 322b).
The method of the mutual inductance value of adjustment transformer 300 can be under the situation of the position of keeping first outer ring (i.e. the first pitch of the laps 312a, 312b) and second outer ring (i.e. the second pitch of the laps 322a, 322b); Adjust the position of first inner ring (i.e. the first pitch of the laps 312c) and second inner ring (i.e. the second pitch of the laps 322c), with the area of the overlapping region O that changes first inner ring and second inner ring.Therefore, present embodiment can be adjusted the mutual inductance value of first planar coil 310 and second planar coil 320 under the situation of the self-induction value that does not influence first planar coil 310 and second planar coil 320.
In addition, please with reference to the regional A1 of Fig. 3, in present embodiment, when first inner ring was between 2 second pitch of the laps 322, the mutual inductance value of transformer 300 also can be adjusted in the position of adjusting first inner ring and 2 second pitch of the laps 322.In addition, please with reference to the regional A2 of Fig. 3, in present embodiment, the method for the mutual inductance value of adjustment transformer 300 also can be when second inner ring is between 2 first pitch of the laps 312, adjusts the position of second inner ring and 2 first pitch of the laps 312.
In sum, the present invention can be under the situation of the position of keeping first outer ring and second outer ring, and the position through adjusting first inner ring and second inner ring to be changing both overlapping areas, and then reaches the purpose of the mutual inductance value of adjustment transformer.Therefore, the mutual inductance value of adjusting transformer of the present invention can not influence first and second planar coil self-induction value separately, also can significantly not increase the layout area of transformer.Also therefore, transformer of the present invention can have bigger design flexibility by more existing transformer.
Though the present invention discloses as above with embodiment; Right its is not in order to limit the present invention; Has common knowledge the knowledgeable in the field under any; Do not breaking away from the spirit and scope of the present invention, when can doing a little change and retouching, so protection scope of the present invention is when looking accompanying being as the criterion that claim defines.
Claims (6)
1. a transformer is suitable for being disposed in the circuit base plate, it is characterized in that, this transformer comprises:
One first planar coil has a plurality of first pitch of the laps; And
One second planar coil has a plurality of second pitch of the laps,
Those first pitch of the laps constitute one first pitch of the laps bundle, and those second pitch of the laps constitute one second pitch of the laps bundle, and intrafascicular at least two adjacent first pitch of the laps of this first pitch of the laps and at least two second adjacent pitch of the laps of this second pitch of the laps bundle are crossed over each other.
2. transformer as claimed in claim 1 is characterized in that, one first line segment of those first pitch of the laps is between two neighbors of those second pitch of the laps.
3. transformer as claimed in claim 1 is characterized in that, one second line segment of those second pitch of the laps is between two neighbors of those first pitch of the laps.
4. transformer as claimed in claim 1 is characterized in that this circuit base plate has an insulating barrier,
Each first pitch of the laps of this first planar coil all comprises:
One first common line segment,
One first cross-over connection line segment lays respectively at the both sides of this insulating barrier with this first common line segment, and
One first conduction duct is passed this insulating barrier and is connected this first common line segment and this first cross-over connection line segment,
Each second pitch of the laps of this second planar coil all comprises:
One second common line segment is distributed on the same plane with this first common line segment,
One second cross-over connection line segment lays respectively at the both sides of this insulating barrier with this second common line segment, and
One second conduction duct is passed this insulating barrier and is connected this second common line segment and this second cross-over connection line segment,
The wherein projection of those first cross-over connection line segments of this first pitch of the laps bundle on this plane and those second common line segment intersections of this second pitch of the laps bundle, and the projection of those second cross-over connection line segments of this second pitch of the laps bundle on this plane and those first common line segment intersections of this first pitch of the laps bundle.
5. transformer as claimed in claim 4; It is characterized in that; This first common line segment of at least one first pitch of the laps intersects on projection plane with this first cross-over connection line segment of another first pitch of the laps at least, and this insulating barrier is disposed between this first cross-over connection line segment of this first common line segment and another this first pitch of the laps of this first pitch of the laps.
6. transformer as claimed in claim 4; It is characterized in that; This second common line segment of at least one second pitch of the laps intersects on projection plane with this second cross-over connection line segment of another second pitch of the laps at least, and this insulating barrier is disposed between this second cross-over connection line segment of this second common line segment and another this second pitch of the laps of this second pitch of the laps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101356709A CN101388277B (en) | 2008-07-09 | 2008-07-09 | Transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101356709A CN101388277B (en) | 2008-07-09 | 2008-07-09 | Transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101388277A CN101388277A (en) | 2009-03-18 |
| CN101388277B true CN101388277B (en) | 2012-03-28 |
Family
ID=40477620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101356709A Active CN101388277B (en) | 2008-07-09 | 2008-07-09 | Transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101388277B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI645429B (en) | 2018-01-29 | 2018-12-21 | 瑞昱半導體股份有限公司 | Transformer structure |
| CN110120293B (en) * | 2018-02-05 | 2021-02-05 | 瑞昱半导体股份有限公司 | Transformer structure |
| CN110676028B (en) * | 2018-07-03 | 2021-08-03 | 瑞昱半导体股份有限公司 | Transformer device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4816784A (en) * | 1988-01-19 | 1989-03-28 | Northern Telecom Limited | Balanced planar transformers |
| US6794977B2 (en) * | 2001-10-15 | 2004-09-21 | Nokia Corportation | Planar transformers |
| CN1224062C (en) * | 2001-08-09 | 2005-10-19 | 皇家飞利浦电子股份有限公司 | Planar inductive component and planar transformer |
-
2008
- 2008-07-09 CN CN2008101356709A patent/CN101388277B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4816784A (en) * | 1988-01-19 | 1989-03-28 | Northern Telecom Limited | Balanced planar transformers |
| CN1224062C (en) * | 2001-08-09 | 2005-10-19 | 皇家飞利浦电子股份有限公司 | Planar inductive component and planar transformer |
| US6794977B2 (en) * | 2001-10-15 | 2004-09-21 | Nokia Corportation | Planar transformers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101388277A (en) | 2009-03-18 |
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