A negative feedback inductor and a gate inductor are formed in different wiring layers of a substrate so as to be at least partially overlapped with each other in a plan view. When the lower wiring layer is thinner and the upper wiring layer is thicker, the negative feedback inductor Lc is formed in the lower wiring layer that is thinner.

Isolators for signals and/or powers transmitted between two circuits configured to operate at different voltage domains are provided. The isolators may have working voltages, for example, higher than 500 Vrms, higher than 1000 Vrms, or between 333 Vrms and 1800 Vrms. The isolators may have a fully symmetrical configuration. The isolators may include a primary winding coupled to a driver and a secondary winding coupled to a receiver. The primary and secondary windings may be laterally coupled to and galvanically isolated from each other. The primary and secondary windings may include concentric traces. The primary and secondary windings may be fabricated using a single metallization layer on a substrate.

A multilayer inductor component includes an element body that is an insulator and a coil in which a plurality of coil conductor layers that extend along planes in the element body are electrically connected to each other. Also, each of the coil conductor layers includes metal part and glass part, and the glass part include internal glass portion that is entirely included in the metal part.

In a multilayer chip component according to an aspect of the present disclosure, dots of a two-dimensional code provided on a main surface of an element body has a semicircular cross-sectional shape. That is, since substantially no corner portions are present in a cross-sectional shape of the dots, stress is unlikely to remain when the dots are formed, and stress is unlikely to be concentrated after the dots are formed. Therefore, cracking is unlikely to occur in the foregoing multilayer chip component.

Systems and methods for improving winding losses in transformers are disclosed. In one aspect, a transformer includes a first magnetic core having an interior portion and an exterior portion, a second magnetic core in contact with the interior and exterior portions, a plurality of primary and secondary windings formed around the interior portion, where the interior portion is formed from one of a first magnetic material and a second magnetic material, and the exterior portion is formed from one of the first magnetic material and the second magnetic material, where the first magnetic material has different properties than the second magnetic material. In another aspect, the first magnetic core includes a third portion that extends across and is in contact with the interior portion and the exterior portion, where the third portion is formed from one of the first magnetic material and the second magnetic material.

Provided is an antenna structure configured to wirelessly charge, the antenna structure including an insulating substrate, a coil formed on a first surface of the insulating substrate in a winding structure, the coil being wound a certain number of times in a clockwise and/or a counterclockwise direction around an axis normal to the insulating substrate, a coating layer including a first magnetic material, the coating layer being disposed adjacent to and surrounding the coil in a winding structure corresponding to the winding structure of the coil, and a shielding sheet including a second magnetic material and facing the second surface of the insulating substrate.

A coil electronic component includes a magnetic body having an internal coil part embedded therein, in which the internal coil part includes an insulating substrate, a first insulator, a coil conductor, and a second insulator. The first insulator is disposed on at least one of first and second main surfaces of the insulating substrate and has a groove formed therein. The coil conductor is formed inside the groove. The second insulator encloses the insulating substrate, the first insulator, and the coil conductor. The first insulator may be formed to a thickness larger than (and no more than 40 μm thicker than) a thickness of the coil conductor on the insulating substrate. The first insulator may be formed to a width of 3 μm to 50 μm. Further, the second insulator may extend to a thickness 1 μm to 20 μm larger than that of the first insulator on the insulating substrate.

The present disclosure provides a magnetic element, including: a magnetic core with at least one magnetic column extending along a first direction; a first winding surrounding the magnetic column; a second winding at least partially surrounding the first winding; and a third winding at least partially surrounding the second winding. The number of turns of the second winding is less than or equal to the number of turns of the first winding. The number of turns of the third winding is less than or equal to the number of turns of the first winding.

The present disclosure provides a magnetic element, including: a magnetic column extending along a first direction; a first winding surrounding the magnetic column, connected to a first terminal located on a first side of the magnetic element, and the first terminal has a first projection of the first terminal on a first side surface of the magnetic element; and a second winding surrounding the magnetic column and at least partially outside the first winding, wherein the second winding has a first projection of the second winding on the first side surface of the magnetic element, the first projection of the first terminal is at least partially outside the first projection of the second winding, the second winding is a flatwise-wound winding, and the number of turns of the first winding is greater than or equal to the number of turns of the second winding.

A transformer comprising a first signal path in a first plane or layer and a second signal path in the same plane or layer. The second signal path is offset in a diagonally direction in relation to the first signal path, such that the first signal path and the second signal path are in proximity to establish electric-field coupling between the first signal path and the second signal path. A jumper, located in a second plane, is electrically connected to either the first signal path or the second signal path through vias that extend from the first plane to the second plane. The jumper prevents electrical contact between the first and the second signal path at locations where the first and the second signal path would otherwise intersect on the first plane. The shape of the first and second signal paths may be square or rectangular, or both.