CN202616007U - Planar transformer - Google Patents
Planar transformer Download PDFInfo
- Publication number
- CN202616007U CN202616007U CN 201220309461 CN201220309461U CN202616007U CN 202616007 U CN202616007 U CN 202616007U CN 201220309461 CN201220309461 CN 201220309461 CN 201220309461 U CN201220309461 U CN 201220309461U CN 202616007 U CN202616007 U CN 202616007U
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- CN
- China
- Prior art keywords
- printed circuit
- circuit board
- winding
- secondary winding
- pcb
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Coils Of Transformers For General Uses (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The utility model discloses a planer transformer comprising an upper shell and a lower shell formed by soft magnetic ferrite cores. More than three printed circuit boards with the number of turns of inductive windings are arranged in the upper shell and the lower shell and form a primary winding and a secondary winding according to the different layer combinations, and pins of the printed circuit boards for forming the primary winding and the secondary winding are connected and then are connected with leading-out terminals of the primary winding and the secondary winding. According to the planer transformer, an independent planer inductor is formed and has the advantages that the cost is lower, the use is more flexible and convenient, and the replacement and the detection are convenient compared with a conventional common embedded type planer inductor. The numbers of turns of the inductive windings on the planer transformer are set to be same, so that the equipment input in the prior period can be reduced further, and the direct current loss can be reduced to be the lowest.
Description
Technical field
The utility model relates to a kind of flat surface transformer, belongs to the transformer technology field.
Background technology
For energy savings and protection environment, present all kinds of digital devices are using increasingly high arithmetic speed, and make the more and more microminaturization of its overall dimension.In order to adapt to energy-conservation and environmental protection requirement, microelectronic circuit is using more and more lower operating voltage.
Compare as winding coil with traditional transformer adopting copper conductor; Because what the winding coil of flat surface transformer adopted is that bilayer or multilayer board or the copper coin that is prefabricated into the plane constitute; While is also because the exploitation of planar magnetic core has obtained success, thereby the design of transformer of complanation is achieved.When power density was greatly enhanced, volume but dwindled greatly, only quite at 20% of conventional transformer; So the thickness of flat surface transformer far hangs down at traditional transformer, only quite at its height of 40%.
Mostly the winding of existing flat surface transformer is to be integrated on the circuit board; Reach 12 layers and replace for satisfying thickness that different pressure becomes the coal gas circuit board by printed circuit board (PCB); Become for satisfying different pressures, here circuit board must be a multilayer, the most nearly more than 12 layers; And this sandwich construction with the entire circuit motherboard is very expensive manufacturing cost, for the entire circuit motherboard, will test its some concrete parameter simultaneously and be unusual difficulty.
Summary of the invention
The technical problem that the utility model will solve is, provides a kind of and independently is provided with, low, the transformer motion stabilization of cost of manufacture, and the flat surface transformer that the amount of circulating funds used is few can overcome the deficiency of prior art.
The technical scheme of the utility model is: flat surface transformer; It comprises upper shell and the lower house that is made up of magnetic ferrite magnetic core; In upper shell and lower house, be provided with the printed circuit board (PCB) of the charged sense winding number of turns more than three; Printed circuit board (PCB) more than three constitutes elementary winding and secondary winding by the different numbers of plies, and the pin that constitutes the printed circuit board (PCB) of elementary winding and secondary winding is connected the back and is connected with the secondary winding exit with elementary winding exit.
Between printed circuit board (PCB), be provided with insulating material and realize electrical isolation.
The inductance winding number of turns on each printed circuit board is identical.
The printed circuit board (PCB) that constitutes elementary winding and secondary winding is arranged by interlaced mode.
Compared with prior art; The utility model is provided with the printed circuit board (PCB) of the charged sense winding number of turns more than three in upper shell that is made up of soft magnet core and lower house; Printed circuit board (PCB) more than three constitutes elementary winding and secondary winding by the different numbers of plies; The pin that constitutes the printed circuit board (PCB) of elementary winding and secondary winding is connected the back and is connected with the secondary winding exit with elementary winding exit; So just can constitute an independently film inductor, existing relatively common its cost of embedded type film inductor is lower, use is flexible more, convenient, and is convenient to change and detection.The inductance winding number of turns on each printed circuit board is set to identical, can further reduce equipment input in early stage like this, and it is minimum that the direct current loss is reduced to; The printed circuit board (PCB) that constitutes elementary winding and secondary winding arranges that by interlaced mode it is minimum to make A.C.power loss also reduce to like this, has also further improved the conversion efficiency of transformer, has played the effect of energy savings.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Embodiment 1: as shown in Figure 1, Upper shell 1 is a symmetrical structure with lower house 2; Its material is a magnetic ferrite magnetic core; In upper shell 1 and lower house 2, be provided with the printed circuit board (PCB) 3 of the charged sense winding number of turns more than three, between printed circuit board (PCB) 3, be provided with insulating material and realize electrical isolation, the printed circuit board (PCB) 3 more than three constitutes elementary winding and secondary winding by the different numbers of plies; The printed circuit board (PCB) 3 that constitutes elementary winding and secondary winding is arranged by interlaced mode; Fig. 1 is signal with three layer printed circuit boards 3, and wherein ground floor and the 3rd layer printed circuit board 3 are elementary winding, and the second layer is a secondary winding; The pin that when connecting, will constitute the printed circuit board (PCB) 3 of elementary winding and secondary winding is connected the back and is connected with the secondary winding exit with elementary winding exit, and exit is connected with circuit board on request.For practicing thrift the prerequisite investment, the inductance winding number of turns on each printed circuit board 3 is identical simultaneously, like this according to pressing the number of plies that becomes can the assembly different printed circuit board (PCB) 3 of requirement.
Claims (4)
1. flat surface transformer; It is characterized in that: it comprises upper shell (1) and the lower house (2) that is made up of magnetic ferrite magnetic core; In upper shell (1) and lower house (2), be provided with the printed circuit board (PCB) (3) of the charged sense winding number of turns more than three; Printed circuit board (PCB) more than three (3) constitutes elementary winding and secondary winding by the different numbers of plies, and the pin that constitutes the printed circuit board (PCB) (3) of elementary winding and secondary winding is connected the back and is connected with the secondary winding exit with elementary winding exit.
2. according to the described flat surface transformer of claim l, it is characterized in that: between printed circuit board (PCB) (3), be provided with insulating material and realize electrical isolation.
3. flat surface transformer according to claim 1 is characterized in that: the inductance winding number of turns on each printed circuit board (3) is identical.
4. flat surface transformer according to claim 1 is characterized in that: the printed circuit board (PCB) (3) that constitutes elementary winding and secondary winding is arranged by interlaced mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309461 CN202616007U (en) | 2012-06-29 | 2012-06-29 | Planar transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220309461 CN202616007U (en) | 2012-06-29 | 2012-06-29 | Planar transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202616007U true CN202616007U (en) | 2012-12-19 |
Family
ID=47349682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220309461 Expired - Fee Related CN202616007U (en) | 2012-06-29 | 2012-06-29 | Planar transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202616007U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113690033A (en) * | 2021-07-23 | 2021-11-23 | 东莞市优琥电子科技有限公司 | Transformer and power adapter |
-
2012
- 2012-06-29 CN CN 201220309461 patent/CN202616007U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113690033A (en) * | 2021-07-23 | 2021-11-23 | 东莞市优琥电子科技有限公司 | Transformer and power adapter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20150629 |
|
| EXPY | Termination of patent right or utility model |