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(11)

EP 4 133 585 A1

(12)

(43) Date of publication: 15.02.2023 Bulletin 2023/07 (21) Application number: 20937569.0 (22) Date of filing: 29.05.2020

(51) International Patent Classification (IPC):  H02M 1/12(1968.09) (52) Cooperative Patent Classification (CPC): H02M 1/12; H02M 3/07; H02M 7/06; H02M 1/4208; H02M 3/01; H02M 3/33571; Y02B 70/10 (86) International application number: PCT/CN2020/093202 (87) International publication number: WO 2021/237658 (02.12.2021 Gazette 2021/48)

(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: Tridonic GmbH & Co KG 6851 Dornbirn (AT)	(72) Inventors: LIN, Shengdie Shenzhen, Guangdong 518131 (CN) WANG, Shuanghong Shenzhen, Guangdong 518131 (CN) MAO, Qiuxiang Shenzhen, Guangdong 518131 (CN) (74) Representative: Rupp, Christian  Mitscherlich PartmbB Patent- und Rechtsanwälte Sonnenstraße 33 80331 München 80331 München (DE)