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EP 4 441 763 A1

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(43) Date of publication: 09.10.2024 Bulletin 2024/41 (21) Application number: 22700893.5 (22) Date of filing: 07.01.2022

(51) International Patent Classification (IPC):  H01F 27/28(2006.01) H01F 41/04(2006.01) H05K 1/02(2006.01) H05K 3/46(2006.01) H01F 27/32(2006.01) H01F 41/12(2006.01) H05K 1/16(2006.01) (52) Cooperative Patent Classification (CPC): H01F 27/2804; H01F 2027/2809; H01F 2027/2819; H01F 27/324; H05K 1/0256; H05K 1/165; H01F 41/042; H01F 41/125; H05K 2201/086; H05K 3/4623 (86) International application number: PCT/EP2022/050281 (87) International publication number: WO 2023/131417 (13.07.2023 Gazette 2023/28)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (71) Applicant: Huawei Digital Power Technologies Co., Ltd. Shenzhen, Guangdong 518043 (CN)	(72) Inventors: PALM, Lasse Petteri 80992 Munich (DE) WIJEKOON, Piniwan, Thiwanka, Bandara 80992 Munich (DE) GAONA, Daniel 80992 Munich (DE) (74) Representative: Gill Jennings & Every LLP  The Broadgate Tower 20 Primrose Street London EC2A 2ES London EC2A 2ES (GB)