CN204257361U - Lead frame and the transformer framework made based on lead frame - Google Patents
Lead frame and the transformer framework made based on lead frame Download PDFInfo
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- CN204257361U CN204257361U CN201420844083.8U CN201420844083U CN204257361U CN 204257361 U CN204257361 U CN 204257361U CN 201420844083 U CN201420844083 U CN 201420844083U CN 204257361 U CN204257361 U CN 204257361U
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Abstract
The utility model provides one can well solve Transformer Winding terminal wiring and wicking connects tin, coplane degree is bad, and the leadframe of the flat transformer framework of the new E R realizing Full-automatic coiling.A kind of lead frame, be made up of some lead wire unit be connected with metal edge frame, described lead wire unit is made up of thin rectangular paster pin section, linking arm and the first wiring pin section, paster pin section is connected with metal edge frame, the other end of paster pin section is connected with linking arm is vertical, the other end of linking arm is connected with the first wiring pin section is vertical, the other end of the first wiring pin section is unsettled and sensing is contrary with paster pin section, the lead wire unit structure that formation paster pin section and the first wiring pin section stagger mutually with vertical direction in the horizontal direction.
Description
Technical field
The utility model relates to transformer, particularly for the lead frame of making the flat transformer framework of the realized Full-automatic coiling of high power density DC/DC supply convertor and the transformer framework made based on this lead frame.
Background technology
Along with the development of switch power technology, modular power source volume size more and more less, but corresponding power density is but more and more higher, and the miniaturization of transformer constant power device is imperative.In current DC-DC, high power module power supply can use the flat surface transformer that integrated cost is higher usually; And little, micropower modular power source still compares and tends to traditional skeleton transformer with low cost.The DC/DC small power module power source operating current exported for low pressure input low pressure is comparatively large, operating frequency is higher, more to take into account power density and miniaturization, generally have employed and select the flat SMD transformer such as ER, EFD, the little wire diameter enamelled wire of usual use multiply of this transformer primary and secondary winding meets the requirement of current density and kelvin effect.The skeleton of the flat surface-mount type of SMD of conventional ER type as shown in Figure 1, a kind of transformer framework, comprise the wrapping post 2 of band magnetic core pilot hole 3, the upper stop piece 5 stretched out along wrapping post 2 two ends and lower stop piece 15, the bilateral symmetry of lower stop piece 15 arranges pair of terminal platform 20, the side of terminal board 20 is extended with pin 50, and the position in the corresponding pin gap, side of terminal board offers wire lead slot 11.Because its pin 50 is integrally made up of wiring portion and paster portion, wiring portion can be less around space, the spacing between adjacent leads is compact, to each pin can around wire diameter and strand count just have very large restriction.If enamelled wire strand count is too many, is bonded to after on terminal and forms very large cross section in wiring position, can cause after wicking connecting tin between terminals of adjacent, and the pin coplanarity of transformer whole can be affected.Just because of there is the technology and quality problem of wiring in actual production, this transformer in most cases can only rely on handwork, special management and control is carried out to the terminal wiring after transformer winding, wicking, seriously reduces production efficiency, increase extra time cost.
Utility model content
In order to solve the problem, the utility model provides one can well solve Transformer Winding terminal wiring and wicking connects tin, coplane degree is bad, and the leadframe of the flat transformer framework of the new E R realizing Full-automatic coiling.
Another technical problem that will solve of the utility model is, provides one can well solve Transformer Winding terminal wiring and wicking connects tin, coplane degree is bad, and realizes the transformer framework based on this leadframe of Full-automatic coiling.
It is as described below that the utility model solves the technical scheme that its technical problem adopts:
A kind of lead frame, be made up of some lead wire unit be connected with metal edge frame, described lead wire unit is made up of thin rectangular paster pin section, linking arm and the first wiring pin section, paster pin section is connected with metal edge frame, the other end of paster pin section is connected with linking arm is vertical, the other end of linking arm is connected with the first wiring pin section is vertical, the other end of the first wiring pin section is unsettled and sensing is contrary with paster pin section, the lead wire unit structure that formation paster pin section and the first wiring pin section stagger mutually with vertical direction in the horizontal direction.
Preferably, the paster pin of described lead wire unit extends to form carefully rectangular second wiring pin section from the junction of linking arm along the direction of the first wiring pin section.
A kind of transformer framework, it is the patch-type skeleton by aforementioned lead frame and plastic body once injection moulding, comprise the wrapping post of band magnetic core pilot hole, the upper stop piece stretched out along wrapping post two ends and lower stop piece, the bilateral symmetry of lower stop piece arranges pair of terminal platform, the side opening of terminal board is provided with wire lead slot, and the side of terminal board is also extended with the two-layer pin mutually staggered with vertical direction in the horizontal direction, wherein, upper strata is the first wiring pin, and lower floor is paster pin.
Preferably, the paster pin of described lead frame extends to form carefully rectangular second wiring pin section from the junction of linking arm along the direction of the first wiring pin section, and the side of described terminal board is extended with the second wiring pin being parallel to above paster pin.Described wire lead slot is opened in the position of the corresponding second wiring pin in side of terminal board.
Preferably, described wire lead slot is opened in the position of the corresponding first wiring pin in side of terminal board.
Preferably, described paster pin becomes " L " shape towards the second wiring bending pins.
Preferably, described paster pin strikes out sea-gull pin shape.
Preferably, described wiring pin is straight pin configuration.
Preferably, described terminal board is provided with the first pin identification point on an end face at the first pin place.
Compared with prior art, the utility model has following beneficial effect:
(1) enamelled wire of more multiply number can be hung;
(2) assign on two pins by the multiply enamelled wire hung on a pin, the enamelled wire number of share of stock that each pin is hung is few, and all winding coils can pass through multiple-spindle winding machine Automated winding, enhance productivity;
(3) normal pins pin is divided into two on 26S Proteasome Structure and Function, separate on wiring pin and paster pin function
(4) wiring and wicking technique can not affect the evenness of paster pin, ensure that the coplane degree of all paster pins of transformer.
Accompanying drawing explanation
Fig. 1 is the stereogram of existing surface-mount type ER type transformer framework;
Fig. 2-1 is the stereogram of the transformer framework of the utility model first embodiment;
Fig. 2-2 is the front view of the transformer framework of the utility model first embodiment;
Fig. 2-3 is the vertical view of the transformer framework of the utility model first embodiment;
Fig. 2-4 is the end view of the transformer framework of the utility model first embodiment;
Fig. 3 is the stereogram of the lead frame of the utility model first embodiment, and wiring pin and the stereochemical structure of paster pin before metal lead wire frame punch forming are shown;
Fig. 4 is the stereogram of the lead frame of the utility model first embodiment, and wiring pin and the stereochemical structure of paster pin after punch forming are shown;
Fig. 5-1 is the stereogram of the transformer framework of the utility model second embodiment;
Fig. 5-2 is the front view of the transformer framework of the utility model second embodiment;
Fig. 5-3 is the vertical view of the transformer framework of the utility model second embodiment;
Fig. 5-4 is the end view of the transformer framework of the utility model second embodiment;
Fig. 6-1 is the stereogram of the lead frame of the utility model second embodiment, and wiring pin and the stereochemical structure of paster pin before metal lead wire frame punch forming are shown;
Fig. 6-2 is the stereogram of the lead frame of the utility model second embodiment, and wiring pin and the stereochemical structure of paster pin after metal lead wire frame punch forming are shown;
In accompanying drawing, the list of parts representated by each label is as follows:
1-coil rack; 2-wrapping post; 3-magnetic core pilot hole; 4-coiling bag stopper slot; 5-transformer coiling wraps catch; 6-magnetic core assembling positive stop strip; 7-pin bit-identify point; 8-wiring pin; 8a, 8b-wiring pin; 9-paster pin; 10-linking arm; 11-wire lead slot; 15-transformer coiling bag lower stop piece; 20-terminal board.
Embodiment
In order to understand the utility model better relative to the improvement done by prior art, before two kinds of embodiments of the present utility model are described in detail, first the prior art that background technology part is mentioned is illustrated by reference to the accompanying drawings.
Fig. 1 shows the skeleton of the flat surface-mount type of SMD of existing conventional ER type, a kind of transformer framework, comprise the wrapping post 2 of band magnetic core pilot hole 3, the upper stop piece 5 stretched out along wrapping post 2 two ends and lower stop piece 15, the bilateral symmetry of lower stop piece 15 arranges pair of terminal platform 20, the side of terminal board 20 is extended with pin 50, and the position in the corresponding pin gap, side of terminal board offers wire lead slot 11.
Follow the structure of above-mentioned Starting Technical scheme, because its pin is integrally made up of wiring portion and paster portion, wiring portion can be less around space, the spacing between terminals of adjacent pin is compact, to each pin can around wire diameter and strand count just have very large restriction.If enamelled wire strand count is too many, is bonded to after on pin and forms very large cross section in wiring position, can cause after wicking connecting tin between terminals of adjacent, and the pin coplanarity of transformer whole can be badly influenced.
For this converter skeleton, increase simply around space, can cause the increase of skeleton volume.If augmenting bone support body does not amass, then need to tighten the spacing between pin, easily cause the problem that pin-pitch is inadequate.One of to add the multiply wire winding on pin, realized by Automated winding very difficult.That is, do not break through the pin configuration of existing transformer framework, be just difficult to adapt to the big current of DC/DC small power module power source, the designs trend of many coilings.
Two kinds of embodiments of the present utility model, exactly for DC/DC small power module power source of the prior art improvement done by the skeleton of the SMD (Chinese translation is surface mount device) of ER type commonly used.Basic improved though of the present utility model is, to start with optimization pin configuration from the structure of pin itself, and optimizes the manufacturing process of the transformer framework of band pin, the more important thing is the realization allowing the wire winding of transformer framework be easy to automated production.
Thinking accordingly, first the utility model changes the structure of metal pins, design a kind of lead frame of pin of transformer framework, be made up of some lead wire unit be connected with metal edge frame, lead wire unit is by thin rectangular paster pin section, linking arm and the first wiring pin section are formed, paster pin section is connected with metal edge frame, the other end of paster pin section is connected with linking arm is vertical, the other end of linking arm is connected with the first wiring pin section is vertical, the other end of the first wiring pin section is unsettled and sensing is contrary with paster pin section, the lead wire unit structure that formation paster pin section and the first wiring pin section stagger mutually with vertical direction in the horizontal direction.
Again based on this lead frame, improve the manufacture method of the transformer framework based on this lead frame, comprise the following steps:
The drawing stage, by the first wiring pin section from linking arm place bending 90 degree; And the paster pin section that be in staggered distribution parallel with the first wiring pin place below linking arm is bent 90 degree along the direction of subtend first wiring pin section, forms the space structure that the first wiring pin section and paster pin section stagger mutually with vertical direction in the horizontal direction;
In the plastic packaging stage, the lead frame after drawing and plastic body are carried out injection mo(u)lding;
After plastic packaging is shaping, then the plastic part of injection mo(u)lding is carried out cutting.
Manufacture method also can obtain a kind of new transformer framework thus, comprise the wrapping post of band magnetic core pilot hole, the upper stop piece stretched out along wrapping post two ends and lower stop piece, the bilateral symmetry of lower stop piece arranges pair of terminal platform, the side opening of terminal board is provided with wire lead slot, the side of terminal board is also extended with the two-layer pin mutually staggered with vertical direction in the horizontal direction, wherein, upper strata is the first wiring pin, and lower floor is paster pin.
The paster pin of the lead frame of innovative design also can extend to form carefully rectangular second wiring pin section from the junction of linking arm along the direction of the first wiring pin section.In the manufacture process of transformer framework, only in the drawing stage, the second wiring pin need be located bending 90 degree more than linking arm, the side that also can directly form terminal board in the plastic packaging stage is extended with the second wiring pin being parallel to above paster pin.
The utility model is disassembled by carrying out function to pin configuration, and consider the problem of pin configuration when the manufacture of transformer framework and when carrying out coiling with transformer framework, concrete pin configuration is gone out dexterously according to disassembling Functional Design, namely same pin physical structure is allowed can to present plane staggered arrangement and space staggered arrangement two kinds uses form, again by the improvement of pin configuration, facilitate the improvement of transformer framework manufacture method, finally make operation by the transformer framework simplified, reappear the product structure of transformer framework.This utility model can not only ensure transformer framework in use, multiply coiling is after wiring, attachment, transformer all pasters pin still has good coplane degree after wicking, more simplify the manufacturing process of transformer framework, also optimize the winding process using transformer framework, reduce processing technology difficulty, thus be easy to the realization of Automated winding.
Below in conjunction with accompanying drawing, the principle of utility model and execution mode are described in detail, in all explanations of execution mode, identical label are marked with to identical component.
First embodiment
Fig. 2-1 to Fig. 2-4 is the structure chart of the utility model first embodiment transformer framework, Fig. 2-1 is the stereogram of the transformer framework of the utility model first embodiment, Fig. 2-2 is the front view of the utility model first embodiment transformer framework, Fig. 2-3 is the vertical view of the utility model first embodiment transformer framework, and Fig. 2-4 is the end view of the utility model first embodiment transformer framework.Comprising coil rack 1, wrapping post 2, magnetic core pilot hole 3, coiling bag stopper slot 4, transformer coiling bag catch 5, magnetic core assembling positive stop strip 6, pin bit-identify point 7, wiring pin 8, paster pin 9, linking arm 10, wire lead slot 11.
Wrapping post 2 is positioned on coil rack 1, and wrapping post 2 inside is provided with magnetic core pilot hole 3, and this magnetic core pilot hole 3 is through-hole structure, and upper and lower surface is communicated with.Have transformer coiling bag catch 5 above wrapping post 2, transformer coiling bag catch 5 and coil rack 1 form the coiling bag stopper slot 4 of transformer, and the primary side winding of transformer and primary side winding technique are in coiling bag stopper slot 4.Transformer coiling bag catch 5 upper surface has two magnetic cores assembling positive stop strips, 6, two magnetic cores assembling positive stop strips 6 to lay respectively at the both sides that coil rack 1 has pin, and to arrange pin with two of coil rack 1 be horizontal direction.Magnetic core pilot hole 3 is positioned in the middle of two magnetic core assembling positive stop strips 6.Coil rack 1 has a pin bit-identify point 7, and pin bit-identify point 7 is positioned at coil rack 1 does not have the side of pin and the 1st pin place of close coil rack 1, and pin bit-identify point 7 plays the effect conveniently distinguishing pin position.
The both sides of coil rack 1 have 10 wiring pins 8 and 5 paster pins 9 respectively, and the 8 points of two-layer distributions of wiring pin are respectively wiring pin 8a and wiring pin 8b.Two sides of coil rack 1 have 5 paster pins 9 respectively, and paster pin 9 is positioned at bottom and the lower end, side of coil rack 1.10 the wiring pins 8 and 5 the paster pins 9 that are positioned at a side of coil rack 1 are divided into 5 groups, each group comprises a wiring pin 8a, a wiring pin 8b and paster pin 9, wiring pin 8a, the wiring pin 8b of each group are inner for be directly connected at coil rack 1 with paster pin 9, electric property are short circuit relation.Fig. 3 is stereogram before the wiring pin of the utility model first embodiment and the metal lead wire frame punch forming of paster pin place, and can know that wiring pin 8 and paster pin 9 are for a slice metal lead wire frame by figure, electrically upper is direct short-circuit annexation.By conplane metal lead wire frame by stamping forming mode by wiring pin 8 and paster pin 9 shaping, and be positioned on different horizontal planes, paster pin 9 is connected by linking arm 10 with wiring pin 8a and wiring pin 8b, and linking arm 10 is same a slice metal lead wire frame with wiring pin 8 and paster pin 9 before punch forming.The plastic body of the metal lead wire frame after punch forming and transformer framework is carried out injection mo(u)lding, form transformer framework, after again paster pin 9 is up folded into coil rack 1 side form " L " type structure, Fig. 4 is the overall perspective view after the wiring pin of the utility model first embodiment and paster pin forming in transformer framework.
Wiring pin 8a, the wiring pin 8b of above-mentioned wiring pin 8 and paster pin 9 are as one group of pin, tie up respectively on wiring pin 8a, wiring pin 8b during the winding wire bag wiring of transformer, the winding coil tied up after pin Pin wicking on wiring pin 8a, wiring pin 8b is relation in parallel, be direct short-circuit relation between two wiring heads of winding coil head and the tail, this pin configuration can realize the enamelled wire winding hanging more multiply number.Paster pin 9 and wiring pin 8a, wiring pin 8b are all direct connection relational, and paster pin 9 is only as paster function.Paster pin 9 and wiring pin 8 functionally separate, structure are separated, electrically on be connected, the evenness of paster pin 9 can not be affected after enamelled wire the end of a thread wicking on wiring pin 8 removes wire enamel membrane process, ensure that the good coplane degree of transformer paster pin.Above-mentioned wiring pin 8a and wiring pin 8b only does wiring function, structure is preferably straight pin form, facilitates Automated winding.Paster pin 9 is " L " type structure, is positioned at part bottom coil rack 1 with the contact pads on pcb board to be connected by scolding tin, is positioned at the connection reliability that coil rack 1 side vertical part can strengthen transformer paster pin and pcb board pad.Transformer is welded to after on pcb board, and " L " type pin configuration of paster pin 9 can facilitate electric iron or heat gun to the heating of paster pin, is conducive to dismounting and the maintenance of transformer.
Coil rack is provided with wire lead slot 11 at each pin correspondence position of wiring pin 8a, wiring pin 8b, and the wire lead slot 11 that wiring pin 8a is corresponding is shallow slot, and the wire lead slot 11 that wiring pin 8b is corresponding is deep trouth.Transformer Winding from wiring pin 8a to coiling bag stopper slot 4 this section of enamelled wire be fixed in corresponding shallow wire lead slot 11, Transformer Winding from wiring pin 8b to coiling bag stopper slot 4 this section of enamelled wire be fixed in corresponding dark wire lead slot 11.Be provided with barricade isolation between adjacent two wire lead slots 11, can prevent from being short-circuited between the enamelled wire winding on the wiring pin 8 of different group.
Second embodiment
Fig. 5-1 to Fig. 5-4 is the structure chart of the utility model second embodiment transformer framework, Fig. 5-1 is the stereogram of the transformer framework of the utility model second embodiment, Fig. 5-2 is the front view of the transformer framework of the utility model second embodiment, Fig. 5-3 is the vertical view of the transformer framework of the utility model second embodiment, and Fig. 5-4 is the end view of the transformer framework of the utility model second embodiment.Be structure and the quantity of wiring pin 8 and paster pin 9 with the difference of the utility model first embodiment, also have the quantity of wire lead slot 11 different, other structure is identical with the first embodiment.
In first embodiment wiring pin 8 each group pin in have two straight wiring pins, only have the wiring pin that is straight here.In addition, paster pin 9 changes sea-gull pin shape into, the paster pin 9 of this sea-gull pin shape both as wiring pin also as paster pin, namely a pin is dual-purpose, and in fact each group pin still comprises two wiring pins.
Paster pin 9 is all in coil rack 1 inside the relation be directly connected with wiring pin 8, paster pin 9 and wiring pin 8 are same a slice metal lead wire frame before transformer framework punch forming, Fig. 6-1 is stereogram before the wiring pin of the utility model second embodiment and the metal lead wire frame punch forming of paster pin place, Fig. 6-2 is stereogram after the wiring pin of the utility model second embodiment and the metal lead wire frame punch forming of paster pin place, after punch forming, wiring pin 8 and paster pin 9 stagger mutually with vertical direction in the horizontal direction, wiring pin 8 is connected by linking arm 10 with paster pin 9.Metal lead wire frame and transformer framework one-body molded after again cutting and punch forming are carried out to the paster pin 9 of lower end, form sea-gull pin shape, effect is shown in Fig. 5-1.
This transformer framework structure is by paster pin 9 multiplexing functions, namely wiring and paster share a pin, paster pin 9 is also used as paster pin, also use as wiring pin, but wiring part and patch portion respectively account for tool independently position, do not overlap, multiply enamelled wire so namely can be realized in parallel, the plastic body podium level bottom coil rack 1 can also be reduced, the height of whole transformer is reduced.
As shown in Fig. 5-3, transformer framework has 10 wire lead slots 11, when wiring pin 8 and paster pin 9 have wiring, transformer winding wire bag is fixed on same wire lead slot 11 from coiling bag stopper slot 4 to the lead-in wire the wiring pin 8 of same group of pin and paster pin 9, as transformer winding wire bag is fixed in same wire lead slot 11 from coiling bag stopper slot 4 to the lead-in wire of wiring pin 81 and paster pin 91.
Below be only preferred implementation of the present utility model, it should be pointed out that above-mentioned preferred implementation should not be considered as restriction of the present utility model, protection range of the present utility model should be as the criterion with claim limited range.For those skilled in the art, not departing from spirit and scope of the present utility model, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.Such as, the pin bit-identify point of transformer framework is changed into the form at rounding or oblique angle by salient point form, or changes shape and the quantity of wire lead slot.Other situation no longer repeats by embodiment here, and protection range of the present utility model should be as the criterion with claim limited range.
Claims (9)
1. a lead frame, it is characterized in that: be made up of some lead wire unit be connected with metal edge frame, described lead wire unit is by thin rectangular paster pin section, linking arm and the first wiring pin section are formed, paster pin section is connected with metal edge frame, the other end of paster pin section is connected with linking arm is vertical, the other end of linking arm is connected with the first wiring pin section is vertical, the other end of the first wiring pin section is unsettled and sensing is contrary with paster pin section, the lead wire unit structure that formation paster pin section and the first wiring pin section stagger mutually with vertical direction in the horizontal direction.
2. lead frame according to claim 1, is characterized in that: the paster pin of described lead wire unit extends to form carefully rectangular second wiring pin section from the junction of linking arm along the direction of the first wiring pin section.
3. a transformer framework, it is the patch-type skeleton by lead frame according to claim 1 and plastic body injection mo(u)lding, comprise the wrapping post of band magnetic core pilot hole, the upper stop piece stretched out along wrapping post two ends and lower stop piece, the bilateral symmetry of lower stop piece arranges pair of terminal platform, the side opening of terminal board is provided with wire lead slot, it is characterized in that: the side of terminal board is extended with the two-layer pin mutually staggered with vertical direction in the horizontal direction, wherein, upper strata is the first wiring pin, and lower floor is paster pin.
4. transformer framework according to claim 3, is characterized in that: described wire lead slot is opened in the position of the corresponding second wiring pin in side of terminal board.
5. the transformer framework according to claim 3 or 4, is characterized in that: described wire lead slot is opened in the position of the corresponding first wiring pin in side of terminal board.
6. the transformer framework according to claim 3 or 4, is characterized in that: described paster pin becomes " L " shape towards the second wiring bending pins.
7. the transformer framework according to claim 3 or 4, is characterized in that: described paster pin strikes out sea-gull pin shape.
8. the transformer framework according to claim 3 or 4, is characterized in that: described wiring pin is straight pin configuration.
9. the transformer framework according to claim 3 or 4, is characterized in that: described terminal board is provided with the first pin identification point on an end face at the first pin place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420844083.8U CN204257361U (en) | 2014-12-25 | 2014-12-25 | Lead frame and the transformer framework made based on lead frame |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420844083.8U CN204257361U (en) | 2014-12-25 | 2014-12-25 | Lead frame and the transformer framework made based on lead frame |
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| CN204257361U true CN204257361U (en) | 2015-04-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505229A (en) * | 2014-12-25 | 2015-04-08 | 广州金升阳科技有限公司 | Wire leading frame, manufacturing method bobbin based on wire leading frame and bobbin |
| TWI584315B (en) * | 2015-04-10 | 2017-05-21 | 台達電子企業管理（上海）有限公司 | Power module and energy converting device using the same |
| CN107026137A (en) * | 2016-01-29 | 2017-08-08 | 乾坤科技股份有限公司 | Electronic module with magnetic devices |
| CN109346288A (en) * | 2018-11-21 | 2019-02-15 | 广州金升阳科技有限公司 | A kind of chip magnetic core and the chip transformer using the magnetic core |
-
2014
- 2014-12-25 CN CN201420844083.8U patent/CN204257361U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104505229A (en) * | 2014-12-25 | 2015-04-08 | 广州金升阳科技有限公司 | Wire leading frame, manufacturing method bobbin based on wire leading frame and bobbin |
| TWI584315B (en) * | 2015-04-10 | 2017-05-21 | 台達電子企業管理（上海）有限公司 | Power module and energy converting device using the same |
| CN107026137A (en) * | 2016-01-29 | 2017-08-08 | 乾坤科技股份有限公司 | Electronic module with magnetic devices |
| CN107026137B (en) * | 2016-01-29 | 2019-10-25 | 乾坤科技股份有限公司 | Electronic module with magnetic devices |
| CN109346288A (en) * | 2018-11-21 | 2019-02-15 | 广州金升阳科技有限公司 | A kind of chip magnetic core and the chip transformer using the magnetic core |
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