Abstract: A metal magnetic particle provided with an oxide layer on a surface of an alloy particle containing Fe and Si. The oxide layer has a first oxide layer, a second oxide layer, a third oxide layer, and a fourth oxide layer. Also, in line analysis of element content by using a scanning transmission electron microscope-energy dispersive X-ray spectroscopy, the first oxide layer is a layer where Fe content takes a local maximum value, the second oxide layer is a layer where Fe content takes a local maximum value, the third oxide layer is a layer where Si content takes a local maximum value, and the fourth oxide layer is a layer where Fe content takes a local maximum value.

Abstract: Inside a first case outer frame portion as an outer frame of the first case, a plurality of first core pieces and a partition to separate a pair of adjacent first core pieces among the plurality of first core pieces are disposed. The first case has a shape capable of accommodating at least a part of the second core piece. The first case outer frame portion includes a first case accommodating portion as a portion of the first case outer frame portion that is capable of accommodating the plurality of first core pieces, and a first case cover portion to cover a space inside the first case accommodating portion.

Abstract: A power converter includes a circuit board, a first magnetic core, and a housing. The circuit board includes an insulating substrate and a first coil conductor. The insulating substrate includes a first side surface. The first magnetic core includes a first magnetic core member and a second magnetic core member. A first side surface of the insulating substrate is opposed to a first portion of the housing and is spaced away from the first portion of the housing. The first magnetic core member and the second magnetic core member are both thermally connected to the first portion.

Abstract: When a winding density represents the number of turns of a wire per unit length in a longitudinal direction of a core portion, a plurality of inductor regions having mutually different winding densities of the wire are arrayed in the longitudinal direction of the core portion, and a low-density inductor region with the winding density being relatively low is located between first and second high-density inductor regions with the winding densities being relatively high.

Abstract: An assembly structure of a transformer and a circuit board includes: a circuit board, a packaging chip, a transformer, a first conductive plate, a second conductive plate and a first heat sink. The packaging chip is disposed on the circuit board. The transformer has at least one first output electrode and at least one second output electrode connected to the first output electrode. The first conductive plate is disposed on the transformer and connected to the at least one first output electrode. The second conductive plate is disposed on the transformer and connected to the at least one second output electrode and the circuit board. The first heat sink is connected to the packaging chip and the first conductive plate, is disposed on the circuit board, and is connected to the circuit board and the first conductive plate.

Abstract: A power supply circuit is provided with: an AC voltage supply part; and one or more Cockcroft-Walton circuits. The one or more Cockcroft-Walton circuits include a plurality of output terminals and are supplied with an AC voltage from the AC voltage supply part. The plurality of output terminals are configured to output different DC potentials for each output terminal according to a magnitude of the AC voltage.

Abstract: Disclosed herein is a coil component that includes a magnetic element body, a coil conductor embedded in the magnetic element body and having an end portion exposed from the magnetic element body, and a terminal electrode connected to the end portion of the coil conductor. The terminal electrode includes a conductive resin contacting the end portion of the coil conductor and containing conductive particles and a resin material, and a metal film covering the conductive resin. The conductive resin including a first conductive resin contacting the end portion of the coil conductor, and a second conductive resin contacting the metal film without contacting the end portion of the coil conductor. A specific surface area of the conductive particles contained in the first conductive resin is larger than that of a conductive particles contained in the second conductive resin.

Abstract: An exemplary embodiment of the present invention provides a stylus pen including: a body; a conductive tip configured to be exposed from an inside of the body to an outside thereof; and a resonance circuit connected to the conductive tip to resonate an electrical signal transferred from the conductive tip. An inductor unit of the resonance circuit includes a ferrite core and a coil wound in multiple layers over at least a portion of the ferrite core. The ferrite core includes nickel, and the coil can be formed by a litz wire with adjacent winding layers that are wound to be inclined in a zigzag form.

Abstract: A reactor includes: an outer peripheral iron core; three leg iron cores; and three coils, each of the coils having an input side coil end and an output side coil end projecting from a same end surface on an end side in the axial direction of the three leg iron cores, where the three coils include two first coils in which a projecting position of the input side coil end and a projecting position of the output side coil end has a first relative positional relationship and include one second coil having a second relative positional relationship opposite to the first relative positional relationship and where winding directions from the input side coil end to the output side coil end of the first and the second coils are reversed to each other.

Abstract: In an exemplary embodiment, a coil component includes: a base part 10 containing a magnetic material; a flat coil 30 embedded in the base part 10, formed by a wound coil conductor 32 where an end part 34 and an end part 36 are located on the inner side and on the outer side of the windings, respectively; a lead conductor 50 and a lead conductor 52 connected to the end part 34 and the end part 36, respectively; an external electrode 60 and an external electrode 62 provided on the surface of the base part 10 and connected to the lead conductor 50 and the lead conductor 52, respectively. The lead conductor 50 is connected to the external electrode 60 in an area 42 on the inner side of the flat coil 30 as viewed from above in the axial direction of the flat coil 30.

Abstract: A power system has a power-electronic module that includes a housing defining a looped reservoir, a ferro-magnetic medium sealed within and filling the looped reservoir, and a conductor surrounded by the ferro-magnetic medium. The conductor is coiled within and along the looped reservoir, and has terminals extending out of the reservoir such that the ferro-magnetic medium and conductor form an inductor that opposes changes in magnitude of current flowing through the conductor.

Abstract: A reactor including: a coil having a wound portion; a magnetic core that is disposed inside and outside the wound portion and forms a closed magnetic circuit; and a resin mold that includes an inner resin disposed between the wound portion and the magnetic core, and does not cover an outer-peripheral face of the wound portion.

Abstract: Disclosed herein is a coil component that includes: a core including a winding core part extending in a first direction and a flange part provided at one end of the winding core part in the first direction, the flange part having a first surface substantially parallel with the first direction; a plate-like member fixed to the first surface of flange part; and a wire wound around the winding core part. The first surface of flange part has a cut part greater in size than a diameter of the wire.

Abstract: A surface-mount inductor comprises a molded body containing a metal magnetic powder; at least one coil buried in the molded body such that lead-out end parts at both ends of the coil are at least partially exposed on a surface of the molded body; and an external terminal formed over an exposed surface of each of the lead-out end parts. A metal magnetic powder exposed portion is formed at least around the exposed surface. The external terminal at least includes a first plating layer formed over the metal magnetic powder exposed portion and the exposed surface of the lead-out end part, and a conductive paste layer formed on the first plating layer and made of a solidified conductive paste. Consequently, the surface mount inductor comprises an external terminal having high connection reliability.

Abstract: 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.

Abstract: A power circuit common mode filter includes: a U-shaped soft magnetic core and two cylindrical soft magnetic cores, wherein recessed grooves are provided at tops of two side walls of the U-shaped soft magnetic core, and the two cylindrical soft magnetic cores are movably installed in the U-shaped soft magnetic core; two ends of each of the cylindrical soft magnetic cores are embedded in the corresponding recessed grooves, and a coil is set on each of the two cylindrical soft magnetic cores in the U-shaped soft magnetic core; the U-shaped soft magnetic core and the cylindrical soft magnetic cores are both covered with a high-voltage-resist insulating material to form insulating layers; surfaces of the insulating layers at the recessed grooves are provided with electrode layers, and ends of the coil is fixedly connected to the electrode layers through soldering tin.

Abstract: A microelectronics package comprising a substrate, the substrate comprising a dielectric and at least first and second conductor level within the dielectric, where the first and second conductor levels are separated by at least one dielectric layer. The microelectronics package comprises an inductor structure that comprises a magnetic core. The magnetic core is at least partially embedded within the dielectric. The inductor structure comprises a first trace in the first conductor level, a second trace in the second conductor level, and a via interconnect connecting the first and second traces. The first trace and the second trace extend at least partially within the magnetic core.

Abstract: A coil device includes a coil portion, an element body, and a terminal electrode. The coil portion is formed by a wire wound in a coil shape. The element body contains the coil portion where a part of an outer circumference of a lead-out part of the coil portion is exposed as an exposed portion from a bottom surface of the element body and where the rest of the outer circumference of the lead-out part of the coil portion is embedded as an embedded portion in the element body. The terminal electrode is formed on the bottom surface of the element body and connected with the exposed portion. An embedded length of the outer circumference of the lead-out part in the embedded portion is larger than a substantially half of a full length of the outer circumference of the lead-out part.

Abstract: There is provided a coil component which includes a core; and a plurality of leg portions provided at respective ends of the core, wherein each of the leg portions includes a protrusion which protrudes inward with respect to a joint between the core and the leg portion.

Abstract: An art includes a core part 10 provided with central leg parts 13A, 13B and right and left leg parts 11A, 11B, 12A, 12B arranged on both sides of the central leg parts 13A, 13B; a coil part 20 formed by winding a conducting wire around a circumference of the central leg parts 13A, 13B; and a heat transfer sheet 30 for dissipating heat in the coil part 20 to outside, in which the coil part 20 is configured in such a manner that a rectangular wire is wound around the circumference of the central leg parts by edgewise winding and a circumference of the coil part 20 wound therearound is abutted on the heat transfer sheet 30.

Abstract: Voltage converter inlay modules are provided for embedding within a package substrate, and are configured to supply power to a processor, or similar digital circuit, which is mounted to the package substrate. The package substrate is typically mounted to a circuit board, or similar. The circuit board provides high-voltage, low-current power to the voltage converter module which, in turn, provides low-voltage high-current power to the processor. The voltage converter inlay provides largely vertical current conduction from the circuit board to the processor, thereby reducing conduction losses incurred by lateral current conduction. The location of the voltage converter inlay between the circuit board and the microprocessor minimizes radiation of electromagnetic interference. The number of terminals allocated for providing power to the package substrate may be minimized due to the voltage converter inlay inputting fairly low levels of current.

Abstract: A composite magnetic material is provided that includes a resin and first magnetic particles provided inside the resin. Each of the first magnetic particles includes a first core comprising a metal magnetic material, and an insulating film that covers the first core. The first core has a substantially flat shape having a short axis and a long axis. A thickness of the insulating film in the long axis direction of the first core is smaller than a thickness of the insulating film in the short axis direction of the first core. In addition, a coil component is provided that includes the composite magnetic material in an element body of the coil component.

Abstract: A compact is provided. When the compact is used for a magnetic core, a magnetic path cross section has a cross-sectional perimeter of more than 20 mm, and at least part of a surface of the compact is covered with an iron-based oxide film having an average thickness of 0.5 ?m or more and 10.0 ?m or less. Letting the proportion of the surface area of the compact to the volume of the compact be surface area/volume, the content of Fe3O4 present in the iron-based oxide film with respect to 100% by volume of the compact satisfies any one of (1) to (3): (1) less than 0.085% by volume when the (surface area/volume) is 0.40 mm?1 or less, (2) 0.12% or less by volume when the (surface area/volume) is more than 0.40 mm?1 and 0.60 mm?1 or less, and (3) 0.15% or less by volume when the (surface area/volume) is more than 0.60 mm?1.

Abstract: The present disclosure provides an inductive element capable of lowering a Q-value. An inductive element includes a first cover and a second cover covering an annular core, and a first winding and a second winding wound around a region of the core, the first cover and the second cover. The first cover covers a part of an inner circumferential surface of the core, a part of an outer circumferential surface and an end surface on one end side in an axial direction. The second cover covers a part of the inner circumferential surface of the core, a part of the outer circumferential surface an end surface on the other end side in the axial direction.

Abstract: A method of manufacturing a reactor that includes a reactor and a pair of core segments. The method includes mounting the reactor coil onto the pair of core segments, and placing the core segments face to face, with a thermosetting adhesive sandwiched there between. The method further includes placing a heating core such that one end of the heating core around which a heating coil is wound faces one of the core segments, and the other end of the heating core faces the other core segment; producing heat in the core segments by an alternating magnetic flux; and binding together the core segment by a temperature rise and cure of the thermosetting adhesive.

Abstract: An electronic component includes: a body including a coil part disposed therein and containing magnetic metal particles; and a surface protection layer disposed on a surface of the body. The magnetic metal particles comprise two or more kinds of particles having different particle sizes from each other, a portion of the magnetic metal particles are exposed to the surface of the body, and uneven regions are formed on the regions of the surfaces of the magnetic metal particles exposed to the surface of the body, and the surface protection layer is in contact with the uneven regions.

Abstract: A wireless communication antenna includes a solenoid coil portion including a core; and a magnetic body disposed in the core and comprising magnetic pieces arranged side by side in a direction perpendicular to or a direction parallel to a direction of a magnetic flux of the coil portion.

Abstract: A power inductor includes a core and winding. The winding has at least two portions, one made of pure copper and the other made of a low-TCR (temperature coefficient of resistance) alloy, wherein the alloy portion is used to form a current sensor. The two portions are joined to provide a unitary winding. The inductor can provide accurate current detection sensor while minimizing total resistance of the winding.

Abstract: According to aspects of the present disclosure, a ternary alloy includes a dual-phase microstructure including a first phase and a second phase. The first phase defines a hexagonal close-packed structure with a stoichiometric ratio of Al4Fe1.7Si. The second phase defines a face-centered cubic structure with a stoichiometric ratio of Al3Fe2Si. The dual-phase microstructure is stable above about 800° C., and the dual-phase microstructure has a first-phase abundance greater than about 50 parts by weight and a second-phase abundance less than about 50 parts by weight based on 100 parts by weight of the ternary alloy.

Abstract: A thin film inductor 1 includes: a coil part that is formed of at least one coil conductor layer and has terminal electrodes provided at both ends thereof; a first insulating layer that covers the coil part; and a second insulating layer that covers the first insulating layer and has a higher Young's modulus than the first insulating layer.

Abstract: A wireless power transmitting apparatus including a first transmitting coil; a second transmitting coil; a third transmitting coil on the first transmitting coil and the second transmitting coil; and a substrate to accommodate the first transmitting coil, the second transmitting coil, and the third transmitting coil, further the substrate includes a wall to surround a part of an outer circumference of the first transmitting coil and a part of an outer circumference of the second transmitting coil; a first protrusion to surround a first part of an outer circumference of the third transmitting coil; and a second protrusion to surround a second part of the outer circumference of the third transmitting coil.

Abstract: A noise reduction unit (100) is equipped with a noise filter (10), a housing (80) which houses the noise filter, and a sealing material (90) which is charged in the housing. The noise filter is equipped with conductors (20) having respective winding portions (21) and a ring-shaped core (30) which is made of a magnetic material and is inserted through the winding portions of the conductors. In the housing, a mounting portion (83) for the ring-shaped core has recesses (84) that are recessed in a direction going away from the ring-shaped core and support portions (83b) that support the ring-shaped core so that gaps (S) are formed between the ring-shaped core and the bottom surfaces of the respective recesses. The sealing material goes into the gaps and comes into contact with both of the ring-shaped core and the bottom surfaces of the recesses in the mounting portion.

Abstract: An antenna device including: a core formed by a magnetic material; a terminal attachment unit which is arranged on one end side of the core and concurrently, which is provided with an opening portion of penetration-state; a coil which is arranged on the outer-peripheral side of the core and concurrently, which is formed by winding a conductive wire; and at least a pair of terminal members which are attached to the terminal attachment unit and concurrently, which are provided with a chip-support-piece portion positioned at the opening portion and concurrently electrically connected to an electronic component while being equipped with aforesaid electronic component having a chip-shape, wherein for the chip-support-piece portion, there is provided a positioner which carries out the positioning of the electronic component.

Abstract: A thin, flexible antenna module is provided for use in a smartphone. When the antenna module is assembled in the smartphone, the antenna module provides an MST antenna and an NFC antenna. For this, the antenna module includes a flexible PCB containing coils and further includes a magnetic sheet engaged with flexible PCB. The flexible PCB and the magnetic sheet are attached to each other to form a single body.

Abstract: A reactor includes a core made of a magnetic material; a resin mold that encloses the core; a coil that is wound around the core through the resin mold; a plurality of fasteners located on the resin mold; and a supporting member that is secured to the resin mold through the fasteners. At least one of the plurality of fasteners is a flexible fastener.

Abstract: A thin film magnet (TFM) three-dimensional (3D) inductor structure may include a substrate with conductive vias extending through the substrate. The TFM 3D inductor structure may also include a magnetic thin film layer on at least sidewalls of the conductive vias and on a first side and an opposing second side of the substrate. The TFM 3D inductor structure may further include a first conductive trace directly on the magnetic thin film layer on the first side of the substrate and electrically coupling to at least one of the conductive vias. The TFM 3D inductor structure also includes a second conductive trace directly on the magnetic thin film layer on the second side of the substrate and coupled to at least one of the conductive vias.

Abstract: Provided is a wireless power transmitting apparatus of a wireless charging system. The wireless power transmitting apparatus of the wireless charging system according to an embodiment of the present invention includes a transmitting coil and a soft magnetic substrate having one side configured to accommodate the transmitting coil, and a groove corresponding to a shape of the transmitting coil is formed in the one side configured to accommodate the transmitting coil.

Abstract: A wireless power transfer device including a first coil having a first portion, and configured to generate a magnetic field, and a second coil having a second portion. The second coil positioned with respect to the first coil such that the first portion of the first coil overlaps the second portion of the second coil in an overlap region. The wireless power transfer device also includes a power amplifier electrically coupled to one selected from a group consisting of the first coil and the second coil, and a flux concentrator aligned with the overlap region and configured to concentrate a magnetic flux of the magnetic field. The power amplifier configured to output a drive signal.

Abstract: A coil unit for an electric vehicle for the inductive transfer of electrical energy between the coil unit and a stationary charging station. The coil unit includes at least one coil and a flux guide unit for guiding a magnetic flux occurring during operation of the coil. Also disclosed is an electric vehicle having a coil unit for the inductive transfer of electrical energy between a secondary coil of the coil unit and a primary coil of a charging station. The disclosed coil solves the problem of allowing the safe use of the inductive electrical energy transfer in electric vehicles, in particular motor vehicles, by proposing a coil unit, in which the flux guide unit has material weakenings, and an electric vehicle having such a coil unit.

Abstract: A vehicle inductive power assembly and method for transferring electrical power inductively to an electrical device, in a motorized vehicle. The system includes an inductive power transfer system which is configured to provide the electrical power to the electrical device as well as a communications security system which is configured to establish a secure communications channel between the inductive power transfer system and the electrical device. Following activation of the inductive power transfer system, the communications security system initiates a handshaking procedure between the inductive power transfer system and the electrical device. If the handshaking procedure is successful the communications security system instructs the inductive power transfer system to commence providing the electrical power to the electrical device.

Abstract: There are included a core 20 formed from a magnetic material; a terminal mounting unit 80 arranged on one end portion side of core 20; a coil 40 which is arranged on the outer circumferential side of core 20 and concurrently which is formed by winding a conductive wire 41; and a plurality of terminal members 70 which are mounted on terminal mounting unit and concurrently which are electrically connected with a terminal end of conductive wire 41 or with an electronic component at any position, wherein at terminal mounting unit 80, there are provided a plurality of mounting grooves 81 for plugging-in terminal members 70.

Abstract: A wireless power transmission antenna apparatus (100, 200) is mounted on a wireless power transmitting apparatus configured to transmit electric power in a wireless manner, and is provided with: an antenna coil (10) obtained by winding a conductive member; a plurality of plate-like members (21, 22, 23, 24), each containing metal and disposed in surroundings of the antenna coil and in a radial direction of the antenna coil; and a housing case (30) containing metal and configured to accommodate therein the antenna coil and the plurality of plate-like members. The plate-like member is disposed such that a plate face thereof crosses a direction of extension of the conductive member. According to the wireless power transmission antenna apparatus, it is possible to improve power transmission efficiency while complying with radio wave protection guidelines.

Abstract: A magnetic device includes a magnetic core, one or more first windings, and one or more second windings. Each first winding forms a respective first turn around a respective first winding center axis, and each second winding forms a respective second turn around a common second winding center axis that is orthogonal to each first winding center axis. Another magnetic device includes a magnetic core, a plurality of first windings forming respective first winding turns, and a second winding forming a second winding turn. Each first winding turn is within the second winding turn, as seen when the magnetic device is viewed cross-sectionally in a first direction. Yet another magnetic device includes a magnetic core, one or more first windings, and one or more second windings magnetically isolated from the one or more first windings.

Abstract: The invention relates to an inductive wireless charging system comprising a charger, a chargeable mobile device, a first coil for or in the charger, and a second coil for or in the chargeable mobile device, wherein each of the first and the second coil comprises a core part consisting of a soft magnetic material, and each of the first and the second coil is embedded in a polymer bonded soft magnetic material. The invention also relates to a charger, respectively a chargeable mobile device for an inductive wireless charging system, comprising at least one coil comprising a core part consisting of a soft magnetic material, wherein the coil is embedded in a polymer bonded soft magnetic material.

Abstract: A wireless power transmission antenna apparatus (100, 200) is mounted on a wireless power transmitting apparatus configured to transmit electric power in a wireless manner, and is provided with: an antenna coil (10) obtained by winding a conductive member; and a plate-like member (21, 22, 23, 24) containing metal, disposed in surroundings of the antenna coil and in a radial direction of the antenna coil. The plate-like member is disposed such that a plate face thereof crosses a direction of extension of the conductive member. According to the wireless power transmission antenna apparatus, it is possible to improve power transmission efficiency while complying with radio wave protection guidelines.

Abstract: A transformer includes a primary winding; a secondary winding; a first electrostatic screen located between the primary winding and the secondary winding and most proximate to the primary winding; and a second electrostatic screen located between the primary winding and the secondary winding and most proximate to the secondary winding. The first electrostatic screen is electrically connectable to a power supply electrically connectable to the primary winding and the second electrostatic screen is electrically connectable to a load electrically connectable to the secondary winding. The invention also includes an inverter system including the transformer.

Abstract: The inductor core has a higher magnetic permeability than air, and includes an endless channel adapted for containing an inductor winding, where the inductor core extends along a first axis A, and the inductor winding extends completely around the first axis A of the inductor core in such a way that the inductor winding has a number of discrete positions or first sections where it extends in a direction being perpendicular to the first axis A of the inductor core, and wherein the inductor winding, between the discrete positions or first sections, has second sections where it extends at least partly along the first axis A.

Abstract: The present invention provides a teardrop-shaped magnetic core having excellent manufacturing efficiency, a large initial inductance, and stable DC superposition characteristics and a coil device using this teardrop-shaped magnetic core. A teardrop-shaped magnetic core according to the present invention is a magnetic core that is made from a magnetic material and is to be used in a coil device 20, the magnetic core including a first rectilinear portion 11 and a second rectilinear portion 15 that have a straight-line shape and are connected to each other at one end via a bent portion 16 that is bent at a right angle, and a circular arc portion 17 that has a circular arc shape and connects the first rectilinear portion and the second rectilinear portion to each other at the other end. A coil device according to the present invention is configured by winding a wire around the teardrop-shaped magnetic core 10.

Abstract: A wireless power transmission and charging system and method are provided. The wireless power may refer to energy that may be transferred from a wireless power transmitter to a wireless power receiver. The wireless power transmission and charging system may include a source device to wirelessly transmit power, and a target device to wirelessly receive power.

Abstract: A method of making a wireless charging coil. More specifically, a method of making a wireless charging coil is provided comprising stamping a metal sheet to form a first coil having a first spiral trace, applying the first stamped coil to a first laminate, stamping a metal sheet to form a second coil having a second spiral trace, applying the second stamped coil to a second laminate, interpositioning the first stamped coil and the second stamped coil to form a planar coil assembly, the first stamped coil and the second stamped coil positioned between the first and second laminates, heating and pressing the planar coil assembly to displace and set the adhesive of the first and second laminates to surround and bond together the first and second coils.