Title:
GaN-BASED SWITCHED-MODE POWER SUPPLY WITH PLANAR TRANSFORMER
Document Type and Number:
WIPO Patent Application WO/2024/077528
Kind Code:
A1
Abstract:
A switched mode power supply is provided. The power supply includes a flyback converter with a GaN-based power semiconductor transistor and a planar transformer. The planar transformer includes a magnetic core and primary and secondary planar coil windings. The magnetic core has an upper core and a lower core being configured to accept the primary and the secondary planar coil windings. The lower core has at least three projections including two peripheral projections and a central projection being surrounded by the primary and the secondary planar coil windings. The central projection and the two peripheral projections have a same height such that there is no air gap between the central projection of the lower core and the upper core when the two peripheral projections contact the upper core. The central projection being made of iron powder and the two peripheral projections being made of ferrite material.
Inventors:
ZOU YANBO (CN)
DU FADA (CN)
CHEN YULIN (CN)
TANG CHAO (CN)
DU FADA (CN)
CHEN YULIN (CN)
TANG CHAO (CN)
Application Number:
PCT/CN2022/124952
Publication Date:
April 18, 2024
Filing Date:
October 12, 2022
Export Citation:
Assignee:
INNOSCIENCE SHENZHEN SEMICONDUCTOR CO LTD (CN)
International Classes:
H01F27/24; H02M3/335
Foreign References:
| US6980077B1 | 2005-12-27 | |||
| CN115004530A | 2022-09-02 | |||
| TWI678871B | 2019-12-01 |
Attorney, Agent or Firm:
BEIJING BESTIPR INTELLECTUAL PROPERTY LAW CORPORATION (CN)
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