Title:
SWITCHING POWER SOURCE DEVICE EQUIPPED WITH COMPOSITE POWER INDUCTOR
Document Type and Number:
WIPO Patent Application WO/2024/084966
Kind Code:
A1
Abstract:
Provided is a switching power source device (80) equipped with a composite power inductor (10), the switching power source device comprising: a linear inductor conductor (31); a linear inductor conductor (32); an inductor conductor (33); and one magnetic body (20) that forms a magnetic path of a magnetic flux generated by a current flowing to the inductor conductor (31), the inductor conductor (32), and the inductor conductor (33). One end of the inductor conductor (31) is connected to a first input terminal, and the other end is connected to one end of the inductor conductor (33). One end of the inductor conductor (32) is connected to a second input terminal, and the other end is connected to one end of the inductor conductor (33). The inductor conductor (31), the inductor conductor (32), and the inductor conductor (33) are sandwiched by or contained in the magnetic body (20). The inductor conductor (31) and the inductor conductor (32) are arranged in parallel so that the magnetic fluxes generated by the current flowing to each conductor are cancelled out at an inner leg section (10ZI) of the magnetic body (20) between the inductor conductor (31) and the inductor conductor (32), and the magnetic fluxes generated by the current flowing to each conductor are intensified at outer leg sections (10ZO1, 10ZO2) of the magnetic body (20) on the outside of the inductor conductor (31) and the inductor conductor (32). The inductor conductor (33) is arranged so that a plane created by the magnetic flux generated by the current flowing to the inductor conductor (33) is orthogonal to the planes created by the magnetic fluxes generated by the current flowing to the inductor conductor (31) and the inductor conductor (32). The inductor conductor (31) and the inductor conductor (32) are inductors that constitute a power conversion circuit, and the inductor conductor (33) is an inductor that constitutes a low-pass filter with respect to an output current of the power conversion circuit.
Inventors:
KOYA SHIGEKI (JP)
HOSOTANI TATSUYA (JP)
HOSOTANI TATSUYA (JP)
Application Number:
PCT/JP2023/036141
Publication Date:
April 25, 2024
Filing Date:
October 04, 2023
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H02M3/155; H01F17/04; H01F27/00; H01G4/40
Domestic Patent References:
| WO2020095432A1 | 2020-05-14 |
Foreign References:
| JP2015231311A | 2015-12-21 | |||
| JP2014155392A | 2014-08-25 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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