Layered inductor
A technology of stacking inductance and stacking direction, applied in the direction of inductors, fixed inductors, fixed signal inductors, etc., can solve problems such as changes, magnetic interference, inductance value differences, etc., to avoid design, simplify the manufacturing process, and simplify the manufacturing process. Effect
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no. 1 approach ）
[0050] Figure 1A , Figure 1B , Figure 1C The first embodiment of the multilayer inductor of the present invention is shown. This multilayer inductor 1 is formed by stacking a plurality of electrically insulating magnetic layers 2 and conductive patterns 3a and sequentially connecting the conductive patterns 3a of the layers in the stacking direction. A rectangular parallelepiped inductor that forms a spirally wound coil 3 and has both ends 4 of the coil 3 guided to the outer periphery is connected to a soldering circuit board (not shown) through the ends 4 of the coil 3 guided to the outer periphery. Disk (land) and is surface mounted.
[0051]In the multilayer inductor 1 of the present embodiment, two coils 3 having the same number of windings and the same coil diameter within a manufacturing error range are arranged in parallel in the magnetic layer 2 so that their axes are parallel to each other. Here, these coils 3 are arranged in a relationship of mirror images with ...
no. 2 approach ）
[0056] Figure 2A , Figure 2B , Figure 2C It is a figure which shows 2nd Embodiment of the multilayer inductor of this invention. again, yes and Figure 1A~Figure 1C Partially identical structural parts shown are assigned the same reference numerals and their description is simplified.
[0057] In the multilayer inductor 10 of the present embodiment, the layer of the nonmagnetic layer 6 is formed inside the coil 3 in the first embodiment, and the nonmagnetic layer 6 and the nonmagnetic pattern 5 are further formed outside the coil 3 continuously. That is, an electrically insulating non-magnetic layer 8 is disposed on the entire surface of the outer peripheral portion 7 where the end portion 4 of the coil 3 is disposed instead of the above-mentioned magnetic layer 2 .
no. 3 approach ）
[0059] Figure 3A , Figure 3B , Figure 3C It is a figure showing the third embodiment of the present invention. In this multilayer inductor 20, the nonmagnetic pattern 5 between the third layer and the conductive pattern 3a continuously forms the nonmagnetic layer 6 inside the coil 3, and, Further, the nonmagnetic pattern 5 between the seventh layer and the nonmagnetic layer 6 inside the coil 3 and the conductive pattern 3a is continuously disposed on the outside of the coil 3, that is, the entire surface of the outer peripheral portion 7 where the end portion 4 of the coil 3 is arranged. A non-magnetic layer 8 is used instead of the above-mentioned magnetic layer 2.
[0060] According to the multilayer inductors 1, 10, 20 having the above configuration, the two coils 3 having substantially the same number of windings and coil diameters are arranged in a mirror image relationship with respect to the imaginary plane between these coils 3, Therefore, the magnetic circuits f...
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