Magnetic component and electric / electronic apparatus

JPWO2025009205A1Undetermined Publication Date: 2025-01-09

Patent Information

Authority / Receiving Office: JP · JP
Patent Type: Applications
Filing Date: 2024-02-14
Publication Date: 2025-01-09

AI Technical Summary

Technical Problem

Magnetic components face challenges in high-frequency applications due to increased losses from leakage magnetic flux and complex core shapes, which affect productivity and miniaturization, especially with ferrite cores requiring air gaps and soft magnetic metal powder cores struggling with high-pressure molding.

Method used

A magnetic component design featuring a core with a middle leg, side legs, and a connecting part, where the winding core is made of a different material with a gap configuration that maintains low copper loss and allows for complex shapes, using ferrite for the core body and soft magnetic metal for the winding core, with specific gap ratios and material compositions to optimize performance.

Benefits of technology

This design enhances productivity and miniaturization by reducing losses and improving circuit efficiency at high frequencies, while accommodating complex shapes and high-frequency compatibility, achieving low loss and high efficiency in magnetic components and electronic devices.

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Abstract

A magnetic component according to one aspect of the present invention comprises: a pair of core bodies each having a middle leg part, side leg parts arranged on both sides of the middle leg part, and connection parts for connecting the middle leg part and the side leg parts; a winding part core arranged with a second gap L2 provided between opposing planes of the middle leg part; and a coil arranged around the winding part core and around which a conductor wire is wound. The winding part core is formed of a material different from that of the core bodies, and is disposed with a first gap L1 provided between the winding part core and the coil. The iron loss of the material of the winding part core is less than or equal to three times the iron loss of the material of the core bodies under a drive condition of a frequency of 100 kHz or greater. Thus, it is possible to increase productivity even with a complex core shape, and to make the apparatus smaller due to high-frequency compatibility.

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