Patent ID: 11967446
Assignee: CYNTEC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A magnetic device, comprising:
a T-shaped magnetic core, comprising a magnetic powder, wherein the T-shaped magnetic core comprises a base and a pillar integrally formed with the base, the base having a top surface and a bottom surface opposite to the top surface side, the pillar being located on the top surface of the base;
a coil wound on the pillar; and
a magnetic body, encapsulating the pillar, the coil and a portion of the base with the bottom surface of the base being not covered by the magnetic body, wherein the magnetic body and the bottom surface of the base form an outer surface of the magnetic device, wherein the magnetic body does not have any portion that is located below the bottom surface of the base of the T-shaped magnetic core, wherein a portion of the magnetic body is in contact with a lateral surface of the base of the T-shaped magnetic core;
wherein a core loss PCL (mW/cm3) of the T-shaped magnetic core satisfies:

0.64×f0.95×Bm2.20≤PCL≤7.26×f1.41×Bm1.08, where f (kHz) represents a frequency of a magnetic field applied to the T-shaped magnetic core, and Bm (kGauss) represents the operating magnetic flux density of the magnetic field at the frequency; and wherein a permeability of the magnetic body is equal to or larger than 4.8, and the core loss PBL (mW/cm3) of the magnetic body satisfies:

2×f1.29×Bm2.2≤PBL≤3.74×f1.29×Bm1.08.