An electronic device includes a substrate, a first insulating film on the substrate, a second insulating film on the first insulating film, first and second coils respectively in the first and second insulating films, first and second terminals, and first and second connection conductors. The first and second insulating films contact each other so that the first and second coils are magnetically coupled. The first insulating film includes a first non-contact portion not contacting the second insulating film. One of the first and second insulating films includes a second non-contact portion not contacting the first or second insulating film. The first terminal is provided on the first non-contact portion and electrically connected to the first coil. The second terminal is provided on the second non-contact portion and electrically connected to the second coil. The first and second connection conductors are connected to the first and second terminals, respectively.

The present disclosure envisages an arrangement for maintaining desired temperature conditions on and within a transformer housing of an encapsulated transformer. The arrangement comprises at least one insulation plate disposed proximal to a transformer core and coil assembly of the encapsulated transformer such that the insulating element is in surface contact with a potting compound of the encapsulated transformer and adapted to substantially contain the heat emanating from the transformer core and coil assembly, thereby maintaining desired temperature conditions on and within the transformer housing.

The present disclosure envisages an arrangement for maintaining desired temperature conditions on and within a transformer housing of an encapsulated transformer. The arrangement comprises at least one insulation plate disposed proximal to a transformer core and coil assembly of the encapsulated transformer such that the insulating element is in surface contact with a potting compound of the encapsulated transformer and adapted to substantially contain the heat emanating from the transformer core and coil assembly, thereby maintaining desired temperature conditions on and within the transformer housing.

A filter inductor for a power generation convertor; the filter inductor comprising a toroidal connector and a conductive winding having a first connector and a second connector positioned at each end of the winding, and wherein the conductive winding being formed from at least first and second winding segments which are connected to each other so as to form a continuous winding around the toroidal connector that extends form the first connector to the second connector.

A coil component includes an insulating layer; an annular ring-shaped coil core embedded in the insulating layer; a coil electrode wound around the coil core; an input electrode designed for external connection, disposed on a lower surface of the insulating layer, and connected to a first end of the coil electrode; and an output electrode designed for external connection, disposed on the lower surface of the insulating layer, and connected to a second end of the coil electrode. One of the input electrode and the output electrode is disposed inside the coil core in a plan view. With this configuration, unlike a conventional coil component in which both input and output electrodes are disposed outside a coil core, it is possible not only to easily reduce the area of the coil component in a plan view, but also to improve heat dissipation characteristics of the coil component.

An insulation type step-down converter includes first, second, third, and fourth secondary-side coils, and first, second, third, and fourth rectifier elements. The first, second, third, and fourth rectifier elements is capable of performing rectification such that electric currents flow alternately only in one of the first and second secondary-side coils and one of the third and fourth secondary-side coils, and electric currents flowing simultaneously in one of the first and second secondary-side coils and one of the third and fourth secondary-side coils are opposite in direction to each other so as to cancel out a magnetic flux passing through the middle leg each time when electric current flowing in the primary-side coil is changed in direction. Provided is an insulation type step-down converter which can minimize an increase in heat generated by the primary-side coil even at a large step-down ratio of a step-down transformer without raising manufacturing costs.

A magnetic device assembly is provided for maximizing the size of the magnetic components for a predetermined power converter module by co-locating and sharing input, output, and auxiliary terminals between the substrates for the power converter and the magnetic components. Wherein complete power module is the result of constructing the separate constituent parts which include an integrated magnetic substrate, magnetic elements mounted therein, a power converter substrate, associated incorporated components located top and bottom on the power converter substrate, a composite mechanical footprint as defined by the mechanical extents of the integrated magnetic substrate and power converter substrate, and a composite electrical pinout as defined by the input-output pins which are coincident to and co-located as those of the integrated magnetic and power converter substrates.

A coil component includes: first and second magnetic cores having first and second flat plate portions; a winding having a hollow core portion; first and second heat dissipation metal plates having first and second heat dissipation plane and first and second heat conduction portions, at least either one of the first and second flat plate portions has a middle leg, the middle leg is inserted into the hollow core portion of a winding, and the first magnetic core and the second magnetic core are combined in such a way that the first flat plate portion and the second flat plate portion face each other, the first heat dissipation plane portion is closely attached to the first flat plate portion and the second heat dissipation plane portion is closely attached to the second flat plate portion, the first heat conduction portion is connected to the second heat conduction portion.

A charging pad for an electric vehicle includes a coolant assembly, a magnetics assembly, and an electronics assembly. The coolant assembly has a top wall and a bottom wall which form a coolant channel for circulating coolant through the coolant assembly. The magnetics assembly is configured to wirelessly receive power from a charging source induction coil arrangement facing the magnetics assembly. The magnetics assembly is adjacent the bottom wall of for heat generated by the magnetics assembly to thermally conduct from the bottom wall into coolant in the coolant channel. The electronics assembly is configured to convert the power wirelessly received by the magnetics assembly into electrical power for charging the electric vehicle. The electronics assembly is arranged adjacent the top wall for heat generated by the electronics assembly to thermally conduct from the top wall into coolant in the coolant channel.

A coil electrode 4 provided in a coil component 1a includes a plurality of inner metal pins 5a arranged on an inner peripheral side of a coil core 3, a plurality of outer metal pins 5b arranged on an outer peripheral side of the coil core 3 to form a plurality of pairs with the inner metal pins 5a, a plurality of lower wiring patterns 7 that connect lower ends of the inner metal pins 5a and the outer metal pins 5b in the pairs, and a plurality of upper wiring patterns 6 that connect upper ends of the outer metal pins 5b to upper ends of inner metal pins 5a adjacent to the inner metal pins 5a that form the pairs with the outer metal pins 5b.