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Electronic device

A technology of electronic devices and circuit modules, applied in the direction of output power conversion devices, electrical components, transformer/inductor cores, etc., can solve the problems of reducing flyback transformer efficiency, electromagnetic interference, loss, etc.

Active Publication Date: 2015-11-25
DELTA ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the leakage inductance can also form an oscillation circuit with the distributed capacitance in the external circuit and the planar transformer winding, and then generate oscillation and radiate electromagnetic energy outward, causing electromagnetic interference
Furthermore, for some transformers, such as flyback transformers, the leakage inductance will also cause losses, thereby reducing the efficiency of the flyback transformer

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0112] refer to Figure 3A , Figure 3B , Figure 3A A schematic structural diagram of an electronic device according to a first embodiment of the present invention is shown, Figure 3B painted Figure 3A An exploded view of the electronics shown.

[0113] Such as Figure 3A , Figure 3B As shown, the electronic device includes a magnetic component 31 (such as a transformer module), a second circuit module 32 and a first circuit module 33 .

[0114] The magnetic component 31 includes a magnetic core set 311 and a winding 312 . The magnetic core group 311 includes a first magnetic core part 311a and a corresponding second magnetic core part 311b, the first magnetic core part 311a has a magnetic core post 3111, a secondary side opening 3112, a primary side opening 3113 and magnetic core cover 3119. The winding 312 includes a second winding (such as: secondary winding, secondary winding) 312a and a first winding (such as: primary winding, primarywinding) 312b, and the win...

no. 2 Embodiment

[0122] In this embodiment, the difference between this embodiment and the first embodiment is that the vertical projection areas of the first magnetic core part 311a and the second magnetic core part 311b on the first plane do not overlap, and the first circuit module 33 or The vertical projection area of ​​the second circuit module 32 and the magnetic core group 311 on the first plane has an overlapping portion. Please refer to Figure 4 , Figure 4An exploded view of the electronic device according to the second embodiment of the present invention is shown. There is a non-covered area on the secondary side between the vertical projection area of ​​the first magnetic core part 311a on the first plane and the vertical projection area of ​​the winding 312 on the first plane, while the second magnetic core part 311b is on the first plane There is a non-coverage area on the primary side between the vertical projection area of ​​the winding 312 and the vertical projection area o...

no. 3 Embodiment

[0125] refer to Figure 5A , Figure 5B , Figure 5A An exploded view illustrating an electronic device of a third embodiment of the present invention, Figure 5B painted Figure 5A Schematic diagram of the magnetic core pack of the electronic device shown.

[0126] In this embodiment, the vertical projection area of ​​the first magnetic core part 311a on the first plane completely covers the vertical projection area of ​​the winding 312 on the first plane, while the vertical projection area of ​​the second magnetic core part 311b on the first plane There is a non-covered area between the area and the vertical projection area of ​​the winding 312 on the first plane, or the vertical projection area of ​​the second magnetic core part 311b on the first plane completely covers the vertical projection of the winding 312 on the first plane area, and there is a non-covered area between the vertical projection area of ​​the first magnetic core part 311a on the first plane and the ...

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PUM

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Abstract

An electronic device includes a magnetic element, a first circuit module, and a second circuit module. The magnetic element includes a magnetic core group and windings. The windings include a first winding and a second winding and are assembled on the magnetic core group. The first circuit module is coupled to the first winding. The second circuit module is coupled to the second winding. The first circuit module or / and the second circuit module has an overlapping vertical projection area on a first plane with the winding, and the first plane is a plane in the horizontal direction of the winding.

Description

technical field [0001] The invention relates to electronic devices in the field of power electronics, in particular to electronic devices containing magnetic components. Background technique [0002] Compared with traditional transformers, planar transformers use single-layer or multi-layer printed circuit boards (Printed Wiring Board, PWB), copper foil and other materials to replace the copper wires in traditional transformers. The wires in planar transformers are actually planar conductors. It will flow away from the center and tend to flow at the edge, but the current will still flow through the conductor completely, so a high current density can be obtained. In addition, since the magnetic core used in the planar transformer is small in size, large in area, flat in shape and good in heat dissipation, higher efficiency can be obtained. Furthermore, due to the advantages of compact structure, good coupling, and excellent insulation performance, planar transformers are sui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00H01F27/24H01F27/28
Inventor 周敏代克代明辉周子颖
Owner DELTA ELECTRONICS INC
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