CN203734554U - Switch power supply module with PCB integrated type transformer - Google Patents
Switch power supply module with PCB integrated type transformer Download PDFInfo
- Publication number
- CN203734554U CN203734554U CN201420107040.1U CN201420107040U CN203734554U CN 203734554 U CN203734554 U CN 203734554U CN 201420107040 U CN201420107040 U CN 201420107040U CN 203734554 U CN203734554 U CN 203734554U
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- pcb
- daughter board
- motherboard
- switch power
- power module
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- 239000004020 conductor Substances 0.000 claims description 54
- 238000004891 communication Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000003466 welding Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 150000003071 polychlorinated biphenyls Chemical class 0.000 abstract 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000004300 potassium benzoate Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000005711 Benzoic acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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- Coils Or Transformers For Communication (AREA)
Abstract
The utility model discloses a switch power supply module with a PCB integrated type transformer. Coils of the transformer are arranged on three PCBs of a motherboard, an upper daughter board and a lower daughter board. Meanwhile, the motherboard is also a bearing board for other devices and electronic lines in the switch power supply module. The surfaces of the upper daughter board and the lower daughter board are provided with welding discs. The upper and lower daughter boards can be welded on the motherboard by using a conventional welding technology. The primary and secondary coils of the transformer can be arbitrarily distributed on the three PCBs of the motherboard, the upper daughter board and the lower daughter board so that design of turns ratio of the primary and secondary coils of the transformer is facilitated. The switch power supply module has characteristics of being high in transmission current, high in conversion efficiency, easy to assembly and low in cost.
Description
Technical field
The present invention relates to a kind of switch power module, particularly relate to a kind of switch power module of the PCB of having integrated-type transformer.
Background technology
Along with scientific and technical development, the function of electronic system becomes increasingly complex, and the parts in electronic system are more and more, must cause electronic system power consumption to increase.As the energy transmission device part of electronic system, Switching Power Supply need to have large transmission power, large delivered current, high efficiency, high output voltage precision, to guarantee the normal work of electronic system.
Transformer plays a part very important in Switching Power Supply, and at present more advanced transformer technology is flat surface transformer technology, adopts multi-layer PCB board, and the conductor in pcb board is as the coil of transformer, then magnetic core is fixed on pcb board.By this method, can improve delivered current, because the width of the conductor in pcb board can design arbitrarily, simultaneously because conductor is thinner, can reduce skin effect, improve the delivered current of transformer; Adopt multi-layer PCB board, can the number of plies be set arbitrarily, reach the object of the appropriate design transformer turn ratio; Meanwhile, multi-layer PCB board can be removed the step of winded coil of transformer from, simplifies production process, has improved production efficiency.
Flat surface transformer only adopts one group of pcb board at present, yet the number of plies demand for pcb board in Switching Power Supply is more, thereby could meet the more multi-functional of modernization Switching Power Supply, but multi-layer PCB board is more expensive, when especially the number of plies is more than 10 layers, the manufacturing cost of multi-layer PCB board becomes higher, and for multi-layer PCB, once it completes, optimal design not only bad for the different coils of transformer, also cannot debug the wire circle of transformer, this has just brought certain restriction to the coil design of transformer.
Summary of the invention
The switch power module that the object of the invention is to propose a kind of PCB of having integrated-type transformer, it has not only increased delivered current, has improved conversion efficiency, also can carry out to it optimal design of accurate debugging and coil, and be easy to assembling, greatly reduce cost, thereby improved economic benefit.
In order to reach above object, the technical solution used in the present invention is: a kind of switch power module with PCB integrated-type transformer, it comprises electronic component, pcb board, magnetic core, draws pin, it is characterized in that: described pcb board comprises daughter board, lower daughter board and motherboard; The bottom of described upper daughter board is by pad and motherboard electrical communication, and the top of lower daughter board is by pad and motherboard electrical communication; On described pcb board, be provided with hollow out, magnetic core is embedded in hollow out, and the metallic conductor on pcb board and magnetic core form the transformer of switch power module jointly.
Described upper daughter board at least consists of one deck PCB.
Described lower daughter board at least consists of one deck PCB.
Described motherboard at least consists of one deck PCB.
Metallic conductor on described PCB layer is realized electrical connection by the plated-through hole being positioned on PCB.
Described plated-through hole is at least one.
Described magnetic core has two side columns, and one of them side column is successively through described upper daughter board, motherboard and lower daughter board, and another side column is only through described motherboard.
The width of described metallic conductor is 1 ~ 10mm.
The thickness of described metallic conductor is 35 ~ 250 microns.
Beneficial effect of the present invention: the coil of (1) transformer of the present invention is the conductor on PCB, and delivered current is large, and there is no the use of coil, and production process is simplified.
(2) number of turn of primary and secondary coil of the present invention can arrange arbitrarily, both the primary and secondary of transformer can be distributed in arbitrarily on motherboard, upper daughter board and three PCB of lower daughter board, so that the turn ratio of Design of Transformer primary and secondary, thereby the design that makes the transformer number of turn becomes more flexible, and conversion efficiency is higher.
(3) motherboard of the present invention comprises printed circuit, pad and coil, because motherboard Area comparison is large, can make double sided board, thereby makes not increase volume when increasing electronic component packing density; Daughter board is as just the coil of transformer, and volume is little, even if need multilayer, also can resolve into the less PCB of many group numbers of plies, can not only make the scope of application wider flexibly to its combination, has also greatly reduced the cost of making.
(4) there is pad on the surface of each PCB of the present invention, makes PCB when assembly, can be considered common surface mounting component, has reduced assembly difficulty and cost, thereby has improved the efficiency of assembling.
(5) the present invention is owing to adopting the structure of mother baby plate, if transformer coil design is unreasonable or while breaking down, can respectively daughter board or motherboard be debugged, be overhauled or change.
Accompanying drawing explanation
Fig. 1 is the structural representation of daughter board on embodiment 1.
Fig. 2 is the structural representation of embodiment 1 motherboard.
Fig. 3 is the structural representation of 1 time daughter board of embodiment.
Fig. 4 is the structural representation of the switch power module after assembling.
Fig. 5 is the structural representation of daughter board and lower daughter board ground floor on embodiment 2.
Fig. 6 is the structural representation of daughter board and the lower daughter board second layer on embodiment 2.
Fig. 7 is the structural representation of the 3rd layer of daughter board and lower daughter board on embodiment 2.
Fig. 8 is the structural representation of the 4th layer of daughter board and lower daughter board on embodiment 2.
Fig. 9 is the structural representation of embodiment 2 motherboard ground floors.
Figure 10 is the structural representation of the embodiment 2 motherboard second layers.
Figure 11 is the structural representation of the 3rd layer of embodiment 2 motherboard.
Figure 12 is the structural representation of the 4th layer of embodiment 2 motherboard.
At the numerical reference described in Figure of description, be expressed as: 101, metallic conductor A; 102, plated-through hole A; 103, hollow out A; 104, plated-through hole B; 105, metallic conductor end A; 106, plated-through hole C; 107, plated-through hole D; 108, plated-through hole E; 109, metallic conductor end B; 110, plated-through hole F; 111, pad A; 112, pad B; 113, PCB substrate A; 114, plated-through hole G; 115, plated-through hole I; 201, pad C; 202, pad D; 203, hollow out B; 204, hollow out C; 205, plated-through hole J; 206, metallic conductor end C; 207, PCB substrate B; 208, plated-through hole K; 209, metallic conductor end D; 210, metallic conductor end E; 211, metallic conductor end F; 212, pad E; 213, pad F; 214, plated-through hole L; 215, plated-through hole M; 216, metallic conductor B; 217, metallic conductor end I; 218, metallic conductor end J; 301, motherboard; 302, lower daughter board; 303, upper daughter board; 304, electronic component; 305, upper magnetic core; 306, lower magnetic core; 307, draw pin; 401, PCB substrate C; 402, metallic conductor end G; 403, metallic conductor end H; 404, hollow out D; 405, metallic conductor C.
Embodiment
In order to make those skilled in the art understand better technical scheme of the present invention, below in conjunction with accompanying drawing, describe the present invention, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.
Embodiment 1
Referring to Fig. 1, a kind of switch power module with PCB integrated-type transformer, is provided with metallic conductor, for hollow out and the plated-through hole of magnetic core are installed on every one deck PCB.In the present embodiment, upper daughter board 303 and lower daughter board 302 form by one deck PCB, and upper daughter board all has metallic conductor A 101, PCB substrate A 113, hollow out A 103, plated-through hole G 114, plated-through hole I 115.
Referring to Fig. 2, motherboard 301 is one deck pcb board, and the pad E 212 on motherboard 301 and pad F 213 positions lay respectively under the plated-through hole G 114 and plated-through hole I 115 in daughter board 303.Metallic conductor B 216 is the transformer coils on motherboard, and the plated-through hole G 114 of metallic conductor B 216 by upper daughter board and plated-through hole I 115 realize the electrical connection with the metallic conductor A 101 of upper daughter board 303.Hollow out B 203 on motherboard 301 and hollow out C 204 are positions that magnetic core of transformer passes, and hollow out B 203 is relative with hollow out A 103 positions in upper daughter board 303.Metallic conductor end I 217 and metallic conductor end J 218 are two ends of transformer coil on motherboard, in the electronic circuit that metallic conductor end I 217 and metallic conductor end J 218 are connected in motherboard, as a winding of transformer.Pad D 202 on motherboard 301 is the pads that are connected lower daughter board circuit with pad C 201.
Referring to Fig. 3, lower daughter board 302 is one deck pcb board, and lower daughter board 302 has metallic conductor C 405 and hollow out D 404, and hollow out D 404 is relative with the hollow out B 203 on motherboard.The metallic conductor end G 402 of metallic conductor C 405 and metallic conductor end H 403 lay respectively under the plated-through hole L 214 and plated-through hole M 215 on motherboard, descend the plated-through hole L 214 of daughter board 302 by motherboard and plated-through hole M 215 to realize the electrical connection with motherboard 301.
Referring to Fig. 4, on motherboard 301, be welded with some electronic components 304, the magnetic core of transformer consists of upper magnetic core 305 and lower magnetic core 306, a center pillar of magnetic core is successively through upper daughter board 303, motherboard 301 and lower daughter board 302, another center pillar of magnetic core only, through motherboard 301, draws the electric input and output that pin 307 is realized switch power module.
Embodiment 2
Referring to Fig. 5, Fig. 6, Fig. 7, Fig. 8, a kind of switch power module with PCB integrated-type transformer, is provided with metallic conductor, for hollow out and the plated-through hole of magnetic core are installed on every one deck PCB.In the present embodiment, upper daughter board and lower daughter board form by four layers of PCB, and ground floor has metallic conductor A 101, hollow out A 103, plated-through hole A 102 and plated-through hole B 104.It has plated-through hole C 106 and plated-through hole D 107 second layer, a metallic conductor end A 105 of the second layer is positioned under the plated-through hole A 102 of ground floor, the below that is plated-through hole is metallic conductor, simultaneously the plated-through hole D107 of the second layer be positioned at first layer metal through hole B 104 under, plated-through hole B 104 and plated-through hole D 107 are electrically connected and connect.The 3rd layer it have plated-through hole E108, metallic conductor end B 109 and plated-through hole F 110, the metallic conductor end B 109 of the 3rd layer is positioned under the plated-through hole C 106 of the second layer, the below that is plated-through hole is metallic conductor, simultaneously three-layer metal through hole E 108 be positioned at the second layer metallic conductor end A 105 under.The plated-through hole F 110 of the 3rd layer is positioned at the below of the plated-through hole D 107 of the second layer, and plated-through hole F 110 and plated-through hole D 107 are electrically connected and connect.
In the one side contacting with motherboard, the 4th layer of upper and lower daughter board, on this layer, there is no coil, upper daughter board and lower daughter board all have two pad A 111 and pad B 112, and for the electrical connection of daughter board and motherboard, hollow out A 103 is positions that magnetic core passes.In the present embodiment, the structure of lower daughter board is identical with upper daughter board.
Referring to Fig. 9, Figure 10, Figure 11, Figure 12, motherboard 301 consists of four layers of pcb board, and hollow out C 203 and hollow out D 204 are positions that magnetic core passes, and hollow out C 203 is corresponding with the hollow out A 103 of upper and lower daughter board.Ground floor pad C 201 and pad D 202 are used for welding daughter board, and pad A 111 and pad B 112 positions in the 4th layer of its position and upper daughter board are corresponding.The plated-through hole G 205 of ground floor be positioned at the second layer metallic conductor end D 209 directly over, the below of plated-through hole is metallic conductor.The plated-through hole H 208 of the second layer of motherboard be positioned at three-layer metal end conductor E 210 directly over, the below of plated-through hole is metallic conductor.The metallic conductor end C 206 of motherboard ground floor is one end of the coil on motherboard, and the metallic conductor end F 211 that motherboard is the 3rd layer is other ends of the coil on motherboard.In the electronic circuit that the metallic conductor end C 206 of ground floor and the metallic conductor end F 211 of the 3rd layer are connected in motherboard, as a winding of transformer.
In the 4th layer of motherboard, there is no coil, pad E 212 and pad F 213 are used for welding lower daughter board, and the pad in the 4th layer of its position and lower daughter board is corresponding, and hollow out B 203 and hollow out C 204 are positions that magnetic core passes.
Referring to Fig. 4, on motherboard 301, be welded with some electronic components 304, the magnetic core of transformer consists of upper magnetic core 305 and lower magnetic core 306, a center pillar of magnetic core is successively through upper daughter board 303, motherboard 301 and lower daughter board 302, another center pillar of magnetic core only, through motherboard 301, draws the electric input and output that pin 307 is realized switch power module.
Applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above example is just for helping to understand method of the present invention and core concept thereof.The above is only the preferred embodiment of the present invention, should be understood that, finiteness due to literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvement, retouching or variation, also above-mentioned technical characterictic can be combined by rights; These improve retouching, change or combination, or without improving, the design of invention and technical scheme are directly applied to other occasion, all should be considered as protection scope of the present invention.
Claims (9)
1. a switch power module with PCB integrated-type transformer, it comprises electronic component, pcb board, magnetic core, draws pin, it is characterized in that: described pcb board comprises daughter board, lower daughter board and motherboard; The bottom of described upper daughter board is by pad and motherboard electrical communication, and the top of lower daughter board is by pad and motherboard electrical communication; On described pcb board, be provided with hollow out, magnetic core is embedded in hollow out, and the metallic conductor on pcb board and magnetic core form the transformer of switch power module jointly.
2. a kind of switch power module with PCB integrated-type transformer according to claim 1, is characterized in that: described upper daughter board at least consists of one deck PCB.
3. a kind of switch power module with PCB integrated-type transformer according to claim 1, is characterized in that: described lower daughter board at least consists of one deck PCB.
4. a kind of switch power module with PCB integrated-type transformer according to claim 1, is characterized in that: described motherboard at least consists of one deck PCB.
5. according to any one described in claim 2 or 3 or 4, there is the switch power module of PCB integrated-type transformer, it is characterized in that: the metallic conductor on described PCB layer is realized and being electrically connected to by being positioned at plated-through hole on PCB.
6. a kind of switch power module with PCB integrated-type transformer according to claim 5, is characterized in that: described plated-through hole is at least one.
7. a kind of switch power module with PCB integrated-type transformer according to claim 1, it is characterized in that: described magnetic core has two side columns, one of them side column is successively through described upper daughter board, motherboard and lower daughter board, and another side column is only through described motherboard.
8. a kind of switch power module with PCB integrated-type transformer according to claim 1, is characterized in that: the width of described metallic conductor is 1 ~ 10mm.
9. a kind of switch power module with PCB integrated-type transformer according to claim 1, is characterised in that: the thickness of described metallic conductor is 35 ~ 250 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107040.1U CN203734554U (en) | 2014-03-11 | 2014-03-11 | Switch power supply module with PCB integrated type transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420107040.1U CN203734554U (en) | 2014-03-11 | 2014-03-11 | Switch power supply module with PCB integrated type transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203734554U true CN203734554U (en) | 2014-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420107040.1U Expired - Lifetime CN203734554U (en) | 2014-03-11 | 2014-03-11 | Switch power supply module with PCB integrated type transformer |
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| Country | Link |
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| CN (1) | CN203734554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795273A (en) * | 2014-03-11 | 2014-05-14 | 湖南进芯电子科技有限公司 | Switching power supply module with PCB integrated transformer |
-
2014
- 2014-03-11 CN CN201420107040.1U patent/CN203734554U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103795273A (en) * | 2014-03-11 | 2014-05-14 | 湖南进芯电子科技有限公司 | Switching power supply module with PCB integrated transformer |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |
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| CX01 | Expiry of patent term |