CN213905098U - Planar transformer based on double-layer circuit board - Google Patents
Planar transformer based on double-layer circuit board Download PDFInfo
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- CN213905098U CN213905098U CN202120255196.4U CN202120255196U CN213905098U CN 213905098 U CN213905098 U CN 213905098U CN 202120255196 U CN202120255196 U CN 202120255196U CN 213905098 U CN213905098 U CN 213905098U
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Abstract
The utility model relates to a planar transformer based on double-deck circuit board, including circuit board, plane magnetic core and pin. The plane magnetic core includes first magnetic core and second magnetic core, and first magnetic core and second magnetic core are respectively from the two sides centre gripping circuit board setting of circuit board. The circuit board includes a first circuit board and a second circuit board. One end of the first circuit board and one end of the second circuit board are arranged in a staggered mode, and the other end of the first circuit board and the other end of the second circuit board are arranged in a staggered mode. The pins include a first pin and a second pin. The first pin is arranged at one end of the first circuit board protruding out of position with the second circuit board, and the second pin is arranged at one end of the second circuit board far away from the first pin, so that the first pin only electrically connected with the coil of the first circuit board does not need to penetrate through the second circuit board, and the risk of short circuit is reduced. Meanwhile, through holes are formed in one end of the first circuit board and one end of the second circuit board respectively, so that the manufacturing process is reduced, and the production cost is reduced.
Description
Technical Field
The utility model relates to a transformer field especially relates to planar transformer based on double-deck circuit board.
Background
Conventional transformers are typically constructed with ferrite cores and copper coils, are bulky and prone to electromagnetic interference. The planar transformer can effectively solve the problems of volume and high frequency, and therefore, the planar transformer has the characteristics of high frequency, low shape, very low height and very high working frequency.
The pins of the existing planar transformer based on the double-layer circuit board are usually arranged outside one layer of circuit board for wiring convenience, but part of the pins are not electrically connected with the circuit board provided with the pins, so that conductive circuits on the two layers of circuit boards are easily short-circuited by part of the pins, and welding holes are formed in the two layers of circuit boards for welding the pins, so that the manufacturing process is increased, and the manufacturing cost is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a planar transformer based on double-deck circuit board to solve the problem of mentioning in the above-mentioned background art.
The technical scheme of the utility model a planar transformer based on double-deck circuit board, including circuit board, plane magnetic core and pin.
The planar magnetic core comprises a first magnetic core and a second magnetic core, a first magnetic core column is arranged on the middle bulge of the first magnetic core, two ends of the first magnetic core respectively protrude two first end posts, the middle of the second magnetic core is protruded with a second magnetic core post, two ends of the second magnetic core are respectively provided with two second end posts in a protruding way, the circuit board is provided with a first through hole, the first magnetic core and the second magnetic core are respectively arranged by clamping the circuit board from two sides of the circuit board, the first magnetic core column and the second magnetic core column respectively penetrate through the first through hole from two sides of the first through hole, the two first end columns are respectively arranged on two outer sides of the circuit board, the two second end columns are respectively arranged on two outer sides of the circuit board, the two first end columns and the two second end columns are respectively arranged in an aligned mode one by one, and each first end column is connected with one second end column;
the circuit board comprises a first circuit board and a second circuit board, the first circuit board is provided with a first end and a second end, the second circuit board is provided with a first end and a second end, the first end of the first circuit board is staggered with the first end of the second circuit board, the second end of the first circuit board is staggered with the second end of the second circuit board, a first coil is arranged on the first circuit board, a second coil is arranged on the second circuit board, the pins comprise a first pin and a second pin, the first pin is arranged on the first end of the first circuit board, and the second pin is arranged on the second end of the second circuit board.
In one embodiment, the first pin has a first end and a second end, the first end of the first pin is soldered to the first circuit board, the second pin has a first end and a second end, the first end of the second pin is soldered to the second circuit board, and the second end of the first pin is flush with the second end of the second pin.
In one embodiment, the length of the first pin and the length of the second pin are respectively greater than the height of the second magnetic core protruding on the second circuit board.
In one embodiment, a separation plate is disposed between the first circuit board and the second circuit board, a second through hole is formed in the separation plate, the first through hole and the second through hole are aligned, and the first magnetic core and the second magnetic core are inserted into the second through hole from two sides of the second through hole respectively.
In one embodiment, the surface of the isolation plate is provided with a heat conducting silica gel layer.
In one embodiment, an insulating layer is sleeved on one end of the first pin close to the first circuit board, and the length of the insulating layer on the pin is greater than the thickness of the second circuit board.
In one embodiment, the first circuit board and the second circuit board are identical in structure.
In one embodiment, the first magnetic core and the second magnetic core are identical in structure.
The utility model provides a beneficial effect is: a planar transformer based on a double-layer circuit board comprises a circuit board, a planar magnetic core and pins. The planar magnetic core comprises a first magnetic core and a second magnetic core, and the first magnetic core and the second magnetic core are respectively arranged on two sides of the circuit board in a clamping mode. The circuit board includes a first circuit board having a first end and a second circuit board having a first end and a second end. The first end of the first circuit board and the first end of the second circuit board are arranged in a staggered mode, and the second end of the first circuit board and the second end of the second circuit board are arranged in a staggered mode. The pins include a first pin and a second pin. The first pins are arranged at one end of the first circuit board and one end of the second circuit board, which are staggered and protruded, and the second pins are arranged at one end of the second circuit board, which is far away from the first pins, so that the first pins only electrically connected with the coil of the first circuit board do not need to penetrate through the second circuit board, and the risk of short circuit is reduced. Meanwhile, through holes are formed in one end of the first circuit board and one end of the second circuit board respectively, so that the manufacturing process is reduced, and the production cost is reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an explosion structure of a planar transformer based on a double-layer circuit board in one direction;
FIG. 2 is a schematic perspective view of an embodiment of a planar transformer based on a double-layered circuit board in one direction;
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The following will combine the drawings of the embodiments of the present invention to further describe the technical solution of the present invention, and the present invention is not limited to the following specific embodiments.
It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar parts. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, the description is merely for convenience of description and simplicity of description, but does not indicate or imply that the equipment or components referred to must have specific orientations, be constructed in specific orientations, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and those skilled in the art will understand the specific meanings of the terms according to specific situations.
In one embodiment, a planar transformer based on a two-layer circuit board, as shown in fig. 1 and 2, includes a circuit board, a planar magnetic core, and pins. The planar magnetic core comprises a first magnetic core 101 and a second magnetic core 102, a first magnetic core column 103 is convexly arranged in the middle of the first magnetic core 101, and two first end columns 104 are convexly arranged at two ends of the first magnetic core 101 respectively; a second core leg 105 is convexly arranged in the middle of the second magnetic core 102, and two second end legs 106 are convexly arranged at two ends of the second magnetic core 102 respectively. The circuit board is provided with a first through hole 401, the first magnetic core 101 and the second magnetic core 102 are respectively arranged from two sides of the circuit board in a clamping mode, the first magnetic core column 103 and the second magnetic core column 105 are respectively arranged from two sides of the first through hole 401 in a penetrating mode, the first end columns 104 are respectively arranged on two outer sides of the circuit board, the second end columns 106 are respectively arranged on two outer sides of the circuit board, the first end columns 104 and the second end columns 106 are respectively arranged in an aligned mode one by one, and each of the first end columns 104 and the second end columns 106 is connected.
As shown in fig. 2, the circuit board includes a first circuit board 201 and a second circuit board 202, the first circuit board 201 having a first end and a second end, and the second circuit board 202 having a first end and a second end. The first end of the first circuit board 201 and the first end of the second circuit board 202 are arranged in a staggered manner, and the second end of the first circuit board 201 and the second end of the second circuit board 202 are arranged in a staggered manner. The first circuit board 201 is provided with a first coil 501, and the second circuit board 202 is provided with a second coil (not shown) in a shielding manner. The pins comprise a first pin 301 and a second pin 302, the first pin 301 is disposed on one end of the first circuit board 201 and the second circuit board 202 which are dislocated and protruded, and the second pin 302 is disposed on one end of the second circuit board 202 which is far away from the first pin 301.
In this embodiment, the first coil 501 and the second coil are located between the first magnetic core 101 and the second magnetic core 102, and are aligned with the first magnetic core 101 and the second magnetic core 102. The first circuit board 201 has a first sub-via, the second circuit board 202 has a second sub-via, and the first sub-via and the second sub-via are aligned and communicated with each other to form a first via 401.
Specifically, the first circuit board 201 and the second circuit board 202 are stacked. The first end of the first circuit board 201 protrudes from the first end of the second circuit board 202, and the second end of the second circuit board 202 protrudes from the first end of the first circuit board 201. The first pin 301 is disposed on a first end of the first circuit board 201, the second pin 302 is disposed on a second end of the second circuit board 202, and a direction in which the first pin 301 protrudes from the first circuit board 201 is the same as a direction in which the second pin 302 protrudes from the second circuit board 202. With the first pin 301 and the second pin 302 thus arranged, the first pin 301 electrically connected only to the coil of the first circuit board 201 need not pass through the second circuit board 202, which reduces the risk of short-circuiting. Meanwhile, only one end of the first circuit board 201 and one end of the second circuit board 202 are respectively provided with a through hole, so that the manufacturing process is reduced, and the production cost is reduced.
In order to allow the planar transformer 10 based on the dual-layer board to be smoothly mounted on an external circuit board, in one embodiment, the first pin 301 has a first end and a second end, the first end of the first pin 301 is soldered on the first circuit board 201, the second pin 302 has a first end and a second end, the first end of the second pin 302 is soldered on the second circuit board 202, and the second end of the first pin 301 is flush with the second end of the second pin 302. In this embodiment, a plurality of first pads are disposed at a first end of the first circuit board 201, a plurality of second pads are disposed at a second end of the second circuit board 202, a side of the first circuit board 201 where the first pads are disposed and a side of the second circuit board 202 where the second pads are disposed face to face in the same direction, the first ends of the first pins 301 are welded to the first pads one by one, and the first ends of the second pins 302 are welded to the second pads one by one. Since the second end of the first pin 301 is flush with the second end of the second pin 302, the double-layer planar transformer 10 can be mounted on an external circuit board and then be parallel to the external circuit board.
In order to enable the first pin 301 and the second pin 302 to contact an external circuit board, in one embodiment, the length of the first pin 301 and the length of the second pin 302 are respectively greater than the height of the second core 102 protruding above the second circuit board 202. The lengths of the first pin 301 and the second pin 302 are set to be higher than the height of the second magnetic core 102, so that when the planar transformer 10 based on the double-layer circuit board is soldered to an external circuit board, the first pin 301 and the second pin 302 contact the external circuit board first, and thus the planar transformer 10 based on the double-layer circuit board can be soldered to the external circuit board through the first pin 301 and the second pin 302.
In order to insulate the circuits on the first circuit board 201 and the circuits on the second circuit board 202 from each other. In one embodiment, a separation plate 500 is disposed between the first circuit board 201 and the second circuit board 202, a second through hole 402 is disposed on the separation plate 500, the first through hole 401 and the second through hole 402 are aligned, and the first magnetic core 101 and the second magnetic core 102 are respectively inserted into the second through hole 402 from two sides of the second through hole 402. Specifically, the isolation plate 500 is sandwiched between the first circuit board 201 and the second circuit board 202, and the isolation plate 500 is an insulating material. By providing the separation plate 500 between the first circuit board 201 and the second circuit board 202, the circuits on the first circuit board 201 and the circuits on the second circuit board 202 can be insulated from each other.
The temperature between the first circuit board 201 and the second circuit board 202 can be reduced while the first circuit board 201 and the second circuit board 202 are insulated from each other. In one embodiment, the surface of the isolation plate 500 is provided with a heat conductive silicone layer. The heat conducting silicon layer is disposed on the isolation plate 500, so that the first circuit board 201 and the second circuit board 202 can be insulated from each other, and the temperature between the first circuit board 201 and the second circuit board 202 can be effectively reduced.
In order to prevent the first pin 301 from being electrically connected with other electronic components and causing short circuit, in one embodiment, an insulating layer is sleeved on one end of the first pin 301 close to the first circuit board 201, and the length of the insulating layer on the pin is greater than the thickness of the second circuit board 202. The exposed first lead 301 is sleeved with an insulating layer, so that the first lead 301 is prevented from being electrically contacted with other electronic components to cause short circuit.
In one embodiment, the first circuit board 201 and the second circuit board 202 have the same structure. That is, the shape of the first circuit board 201 is the same as the shape of the second circuit board 202, and the size of the first circuit board 201 is the same as the size of the second circuit board 202. Therefore, the same equipment can be used when the first circuit board 201 and the second circuit board 202 are cut, so that the manufacturing and production steps are accelerated, and the production cost is reduced.
In one embodiment, the first magnetic core 101 and the second magnetic core 102 have the same structure. The first magnetic core 101 and the second magnetic core 102 have the same structure, and through the arrangement, the magnetism of the first magnetic core 101 is the same as that of the second magnetic core 102, so that the magnetic field intensity of the first coil 501 is the same as that of the second coil, and the normal operation of the planar transformer 10 based on the double-layer circuit board is ensured.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (8)
1. A planar transformer based on a double-layer circuit board is characterized by comprising a circuit board, a planar magnetic core and pins;
the planar magnetic core comprises a first magnetic core and a second magnetic core, a first magnetic core column is arranged on the middle bulge of the first magnetic core, two ends of the first magnetic core respectively protrude two first end posts, the middle of the second magnetic core is protruded with a second magnetic core post, two ends of the second magnetic core are respectively provided with two second end posts in a protruding way, the circuit board is provided with a first through hole, the first magnetic core and the second magnetic core are respectively arranged by clamping the circuit board from two sides of the circuit board, the first magnetic core column and the second magnetic core column respectively penetrate through the first through hole from two sides of the first through hole, the two first end columns are respectively arranged on two outer sides of the circuit board, the two second end columns are respectively arranged on two outer sides of the circuit board, the two first end columns and the two second end columns are respectively arranged in an aligned mode one by one, and each first end column is connected with one second end column;
the circuit board comprises a first circuit board and a second circuit board, the first circuit board is provided with a first end and a second end, the second circuit board is provided with a first end and a second end, the first end of the first circuit board is staggered with the first end of the second circuit board, the second end of the first circuit board is staggered with the second end of the second circuit board, a first coil is arranged on the first circuit board, a second coil is arranged on the second circuit board, the pins comprise a first pin and a second pin, the first pin is arranged on the first end of the first circuit board, and the second pin is arranged on the second end of the second circuit board.
2. The dual-layer circuit board-based planar transformer of claim 1, wherein the first lead has a first end and a second end, the first end of the first lead is soldered to the first circuit board, the second lead has a first end and a second end, the first end of the second lead is soldered to the second circuit board, and the second end of the first lead is flush with the second end of the second lead.
3. The dual-layer circuit board-based planar transformer of claim 1, wherein the length of the first pin and the length of the second pin are respectively greater than the height of the second magnetic core protruding above the second circuit board.
4. The planar transformer according to claim 1, wherein a spacer is disposed between the first circuit board and the second circuit board, a second through hole is disposed on the spacer, the first through hole and the second through hole are aligned, and the first magnetic core and the second magnetic core are inserted into the second through hole from two sides of the second through hole respectively.
5. The planar transformer based on the double-layer circuit board as claimed in claim 4, wherein the surface of the isolation plate is provided with a heat conductive silicone layer.
6. The planar transformer based on the double-layer circuit board as claimed in claim 1, wherein an insulating layer is sleeved on one end of the first pin close to the first circuit board, and the length of the insulating layer on the pin is greater than the thickness of the second circuit board.
7. The dual-layer circuit board-based planar transformer of claim 1, wherein the first circuit board and the second circuit board are identical in structure.
8. The dual-layer circuit board-based planar transformer of claim 1, wherein the first magnetic core and the second magnetic core are identical in structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120255196.4U CN213905098U (en) | 2021-01-29 | 2021-01-29 | Planar transformer based on double-layer circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120255196.4U CN213905098U (en) | 2021-01-29 | 2021-01-29 | Planar transformer based on double-layer circuit board |
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| Publication Number | Publication Date |
|---|---|
| CN213905098U true CN213905098U (en) | 2021-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120255196.4U Active CN213905098U (en) | 2021-01-29 | 2021-01-29 | Planar transformer based on double-layer circuit board |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115714062A (en) * | 2022-11-28 | 2023-02-24 | 超聚变数字技术有限公司 | Switching power supply and computing equipment |
| CN115843158A (en) * | 2023-02-22 | 2023-03-24 | 遂宁睿杰兴科技有限公司 | Printed circuit board with embedded inductance magnetic core and manufacturing method thereof |
-
2021
- 2021-01-29 CN CN202120255196.4U patent/CN213905098U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115714062A (en) * | 2022-11-28 | 2023-02-24 | 超聚变数字技术有限公司 | Switching power supply and computing equipment |
| CN115843158A (en) * | 2023-02-22 | 2023-03-24 | 遂宁睿杰兴科技有限公司 | Printed circuit board with embedded inductance magnetic core and manufacturing method thereof |
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