Power inductor and method of manufacturing the same
There is provided a power inductor, including a magnetic body including a substrate having coils formed thereon, a first metal-polymer complex layer formed on upper and lower surfaces of the substrate, and a second metal-polymer complex layer formed on upper and lower surfaces of the first metal-polymer complex layer and including a higher content of a polymer than that included in the first metal-polymer layer.
1. A power inductor, comprising:
a magnetic body including a substrate having coils formed thereon;
a first metal-polymer complex layer formed on upper and lower surfaces of the substrate; and
a second metal-polymer complex layer formed on upper and lower surfaces of the first metal-polymer complex layer and including a higher content of a polymer than that included in the first metal-polymer complex layer wherein the first metal-polymer complex layer includes 2.0 to 5.0 parts by weight of the polymer based on 100 parts by weight of a metal.
2. The power inductor of claim 1 , wherein the first metal-polymer complex layer includes at least one metal selected from a group consisting of iron-nickel (Fe—Ni), iron-nickel-silicon (Fe—Ni—Si), iron-aluminum-silicon (Fe—Al—Si), and iron-aluminum-chrome (Fe—Al—Cr).
3. The power inductor of claim 1 , wherein the second metal-polymer complex layer includes at least one metal selected from a group consisting of iron-nickel (Fe—Ni), iron-nickel-silicon (Fe—Ni—Si), iron-aluminum-silicon (Fe—Al—Si), and iron-aluminum-chrome (Fe—Al—Cr).
4. The power inductor of claim 1 , wherein the first metal-polymer complex layer includes at least one polymer selected from a group consisting of epoxy, polyimide, and a liquid crystalline polymer (LCP).
5. The power inductor of claim 1 , wherein the second metal-polymer complex layer includes at least one polymer selected from a group consisting of epoxy, polyimide, and a liquid crystalline polymer (LCP).
6. The power inductor of claim 1 , wherein the second metal-polymer complex layer includes 4.0 to 10.0 parts by weight of the polymer based on 100 parts by weight of a metal.
7. The power inductor of claim 1 , wherein the substrate further includes an insulating layer formed on circumferences of the coils.
8. The power inductor of claim 7 , wherein the insulating layer includes at least one material selected from a group consisting of epoxy, polyimide, and a liquid crystalline polymer (LCP).
9. The power inductor of claim 1 , wherein the first metal-polymer complex layer and the second metal-polymer complex layer include metal particles having an average diameter of 1 to 50 μm.
10. The power inductor of claim 1 , wherein each of the first metal-polymer complex layer and the second metal-polymer complex layer has a thickness corresponding to 5 to 30% of an overall thickness of the magnetic body.
11. A power inductor, comprising:
a magnetic body including a substrate having coils formed thereon;
a first metal-polymer complex layer formed on upper and lower surfaces of the substrate;
a second metal-polymer complex layer formed on upper and lower surfaces of the first metal-polymer complex layer;
wherein the first metal-polymer complex layer includes metal and a polymer;
the second metal-polymer complex layer includes metal and a polymer; and
a content of the polymer in the second metal-polymer complex layer is higher than a content of the polymer in the first metal-polymer complex layer wherein the second metal-polymer complex layer includes 4.0 to 10.0 parts by weight of the polymer based on 100 parts by weight of a metal.