CN203721451U - Multi-winding planar transformer made on PCB - Google Patents
Multi-winding planar transformer made on PCB Download PDFInfo
- Publication number
- CN203721451U CN203721451U CN201420130905.6U CN201420130905U CN203721451U CN 203721451 U CN203721451 U CN 203721451U CN 201420130905 U CN201420130905 U CN 201420130905U CN 203721451 U CN203721451 U CN 203721451U
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- pcb board
- wire guide
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- pcb
- winding
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- Coils Of Transformers For General Uses (AREA)
Abstract
The utility model discloses a multi-winding planar transformer made on a PCB. The multi-winding planar transformer made on the PCB comprises six single-piece PCB layers, EI type planar magnetic cores arranged on all the PCB layers and four windings arranged among all the PCB layers, all the PCB layers are insulated from one another, three through holes are formed in the middle of each PCB layer in the width direction in sequence, the EI type planar magnetic cores are mounted in the three through holes, four circular metallized wire holes with equal distance are formed in the two sides of each PCB layer in the width direction, one of the four windings inputs, the other three windings output, and the wires of the windings penetrate through the wire holes. The multi-winding planar transformer made on the PCB is mutually formed by the planar magnetic cores of small sizes and windings formed by corresponding wires on the PCB, a winding framework of a traditional transformer is not needed, heat dissipation is good, transformer parasitic parameter influences are small, and a switching frequency can be quite high.
Description
Technical field
The utility model relates to transformer, is specifically related to the many windings flat surface transformer on a kind of PCB of being produced on.
Background technology
High frequency transformer is one of element indispensable in all kinds of Switching Power Supplies.Traditional high frequency transformer volume is large, wire winding complexity.And along with the increase of Switching Power Supply power output, have to select large magnetic core and large skeleton to make the high frequency transformer of corresponding more volume, manufacture difficulty and cost rise.Need low-voltage, high-current and in spatial volume and limited electronic equipment thereof, traditional high frequency transformer is difficult to be suitable for various.
Utility model content
Technical problem to be solved in the utility model is just to provide the many windings flat surface transformer on a kind of PCB of being produced on, and can use various and need low-voltage, high-current and in spatial volume and limited electronic equipment thereof.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: the many windings flat surface transformer on a kind of PCB of being produced on, comprise 6 layers of pcb board of monolithic, be located at the EI type planar magnetic core on each floor pcb board and be located at Si road winding between each floor pcb board, between each layer of pcb board, keep mutual insulating, in the middle of each layer of pcb board, in broad ways, have successively three through holes, on EI type planar magnetic core, be installed in three through holes, the both sides broad ways of each layer of pcb board is offered respectively four equidistant circular wire guides that metallized, Si road winding Zhong You mono-road winding input, three road winding outputs, the wire of winding passes from wire guide, walk in line process at winding, keep all windings to cover the overlapping area of copper cabling in the direction of vertical pcb board be 0.
Preferably, in three through holes, first through hole is inverted T-shaped, and second through hole is rectangle, and the 3rd through hole is T shape.
Preferably, this flat surface transformer power is 30W, and wherein the second road winding is 10V/300mA output, Third Road winding is 10V/200mA output, and Si road winding is 5V/5A output, and first via winding is 4 circles, the second road and Third Road winding are 2 circles, and Si road winding is 1 circle.
Preferably, first via winding starts to cover copper cabling from first wire guide of ground floor pcb board one side, enclose around second wire guide two, and through layer 6 pcb board, after second wire guide, two circles, second wire guide of layer 6 pcb board one side finally.
Preferably, the second road winding starts to cover copper cabling from first wire guide of second layer pcb board opposite side, enclose around second wire guide two, and through layer 5 pcb board, second of layer 5 pcb board opposite side wire guide finally.
Preferably, Third Road winding starts to cover copper cabling from the 4th wire guide of second layer pcb board opposite side, enclose around second wire two, and through layer 5 pcb board, the 3rd of layer 5 pcb board opposite side the wire guide finally.
Preferably, Si road winding starts from same wire guide by two-way, finally the sub-cabling of same wire guide forms, be specially: the first way cabling covers copper cabling since the 3rd wire guide of the 3rd layer of pcb board one side, enclose around second wire guide one, finally the 4th of the 3rd layer of pcb board one side the wire guide; The second way cabling covers copper cabling since the 3rd wire guide of the 4th layer of pcb board one side, encloses, finally the 4th of the 4th layer of pcb board one side the wire guide around second wire guide one.
The coil that PCB type flat surface transformer of the present utility model forms by undersized planar magnetic core with by the corresponding cabling on PCB forms jointly, it does not need the winding skeleton of traditional transformer, and good heat dissipation, the impact of transformer parasitic parameter is little, and switching frequency can do very highly.
Compared with the high frequency transformer of exporting with traditional Same Efficieney, its volume reduces greatly, and efficiency improves.The former secondary winding coupled of this utility model degree is high, and leakage inductance is little; Distributed capacitance impact between winding reduces to minimum; Save the pcb board number of plies, effectively reduce the cost of whole flat surface transformer.This transformer can be applied to and variously need low-voltage, high-current and in spatial volume and limited electronic equipment thereof.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is further described:
Fig. 1 is ground floor winding plane graph;
Fig. 2 is second layer winding plane graph;
Fig. 3 is the 3rd layer of winding plane graph;
Fig. 4 is the 4th layer of winding plane graph;
Fig. 5 is layer 5 winding plane graph;
Fig. 6 is layer 6 winding plane graph.
Embodiment
The utility model is the many windings flat surface transformer on a kind of PCB of being produced on, that one is made up of 6 layers of pcb board of monolithic and EI type planar magnetic core, in the middle of 6 layers of pcb board of monolithic, in broad ways, have successively three through holes, first through hole 1 is inverted T-shaped, second through hole 2 is rectangle, the 3rd through hole 3 is T shape, and EI type planar magnetic core is installed in three through holes, drives respectively four equidistant circular wire guides 4 that metallized in the both sides broad ways of 6 layers of pcb board of monolithic; Between each layer of pcb board, keep mutual insulating.
As shown in Fig. 1 and Fig. 6, first via winding is: first via winding starts to cover copper cabling from first wire guide of ground floor pcb board one side, enclose around second wire guide two, and through layer 6 pcb board, after second wire guide, two circles, second wire guide of layer 6 pcb board one side finally.
As shown in Figure 2 and Figure 5, the second road winding is: the second road winding starts to cover copper cabling from first wire guide of second layer pcb board opposite side, enclose around second wire guide two, and through layer 5 pcb board, second of layer 5 pcb board opposite side wire guide finally.
Third Road winding is: Third Road winding starts to cover copper cabling from the 4th wire guide of second layer pcb board opposite side, enclose around second wire two, and through layer 5 pcb board, the 3rd of layer 5 pcb board opposite side the wire guide finally.
As shown in Figure 3 and Figure 4, Si road winding is: Si road winding starts from same wire guide by two-way, finally the sub-cabling of same wire guide forms, be specially: the first way cabling covers copper cabling since the 3rd wire guide of the 3rd layer of pcb board one side, enclose around second wire guide one, finally the 4th of the 3rd layer of pcb board one side the wire guide; The second way cabling covers copper cabling since the 3rd wire guide of the 4th layer of pcb board one side, encloses, finally the 4th of the 4th layer of pcb board one side the wire guide around second wire guide one.
The order of above-mentioned wire guide 4 is to calculate to downside from pcb board upside.
Walking in line process, keep all windings to cover the overlapping area of copper cabling in the direction of vertical pcb board be 0.This flat surface transformer power grade is 30W, the input of You Yi road winding, and three road winding outputs, wherein the second road winding is 10V/300mA output, and Third Road winding is 10V/200mA output, and Si road winding is 5V/5A output.First via winding is 4 circles, and the second road and Third Road winding are 2 circles, and Si road winding is 1 circle.
Claims (7)
1. the many windings flat surface transformer being produced on PCB, it is characterized in that: comprise 6 layers of pcb board of monolithic, be located at the EI type planar magnetic core on each floor pcb board and be located at Si road winding between each floor pcb board, between each layer of pcb board, keep mutual insulating, in the middle of each layer of pcb board, in broad ways, have successively three through holes, on EI type planar magnetic core, be installed in three through holes, the both sides broad ways of each layer of pcb board is offered respectively four equidistant circular wire guides that metallized, Si road winding Zhong You mono-road winding input, three road winding outputs, the wire of winding passes from wire guide, walk in line process at winding, keep all windings to cover the overlapping area of copper cabling in the direction of vertical pcb board be 0.
2. the many windings flat surface transformer being produced on PCB according to claim 1, is characterized in that: in three through holes, first through hole is inverted T-shaped, and second through hole is rectangle, and the 3rd through hole is T shape.
3. the many windings flat surface transformer being produced on PCB according to claim 1, it is characterized in that: this flat surface transformer power is 30W, wherein the second road winding is 10V/300mA output, Third Road winding is 10V/200mA output, Si road winding is 5V/5A output, first via winding is 4 circles, and the second road and Third Road winding are 2 circles, and Si road winding is 1 circle.
4. according to the many windings flat surface transformer on PCB that is produced on described in claims 1 to 3 any one, it is characterized in that: first via winding starts to cover copper cabling from first wire guide of ground floor pcb board one side, enclose around second wire guide two, and through layer 6 pcb board, after second wire guide, two circles, second wire guide of layer 6 pcb board one side finally.
5. the many windings flat surface transformer being produced on PCB according to claim 1, it is characterized in that: the second road winding starts to cover copper cabling from first wire guide of second layer pcb board opposite side, enclose around second wire guide two, and through layer 5 pcb board, second of layer 5 pcb board opposite side wire guide finally.
6. the many windings flat surface transformer being produced on PCB according to claim 1, it is characterized in that: Third Road winding starts to cover copper cabling from the 4th wire guide of second layer pcb board opposite side, enclose around second wire two, and through layer 5 pcb board, the 3rd of layer 5 pcb board opposite side the wire guide finally.
7. the many windings flat surface transformer being produced on PCB according to claim 1, it is characterized in that: Si road winding starts from same wire guide by two-way, finally the sub-cabling of same wire guide forms, be specially: the first way cabling covers copper cabling since the 3rd wire guide of the 3rd layer of pcb board one side, enclose around second wire guide one, finally the 4th of the 3rd layer of pcb board one side the wire guide; The second way cabling covers copper cabling since the 3rd wire guide of the 4th layer of pcb board one side, encloses, finally the 4th of the 4th layer of pcb board one side the wire guide around second wire guide one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420130905.6U CN203721451U (en) | 2014-03-21 | 2014-03-21 | Multi-winding planar transformer made on PCB |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420130905.6U CN203721451U (en) | 2014-03-21 | 2014-03-21 | Multi-winding planar transformer made on PCB |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203721451U true CN203721451U (en) | 2014-07-16 |
Family
ID=51160589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420130905.6U Withdrawn - After Issue CN203721451U (en) | 2014-03-21 | 2014-03-21 | Multi-winding planar transformer made on PCB |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203721451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928219A (en) * | 2014-03-21 | 2014-07-16 | 长兴柏成电子有限公司 | Multi-winding planar transformer manufactured on PCBs (printed circuit boards) |
-
2014
- 2014-03-21 CN CN201420130905.6U patent/CN203721451U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928219A (en) * | 2014-03-21 | 2014-07-16 | 长兴柏成电子有限公司 | Multi-winding planar transformer manufactured on PCBs (printed circuit boards) |
| CN103928219B (en) * | 2014-03-21 | 2016-08-24 | 长兴柏成电子有限公司 | A kind of Multiple coil flat surface transformer being produced on PCB |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140716 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |