(19)

(11)

EP 3 963 707 A1

(12)

(43) Date of publication: 09.03.2022 Bulletin 2022/10 (21) Application number: 20798538.3 (22) Date of filing: 11.02.2020

(51) International Patent Classification (IPC):  H02M 3/335(2006.01) H03K 17/0814(2006.01) (52) Cooperative Patent Classification (CPC): H02M 3/33592; H03K 17/08142; Y02B 70/10; H02M 1/342; H02M 1/344 (86) International application number: PCT/US2020/017672 (87) International publication number: WO 2020/222889 (05.11.2020 Gazette 2020/45)

(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 (30) Priority: 01.05.2019 US 201962841694 P 03.07.2019 US 201916503432 29.01.2020 US 202016775967 (71) Applicant: Rompower Technology Holdings, LLC Milford, DE 19963 (US)	(72) Inventor: JITARU, Ionel Tucson, AZ 85718 (US) (74) Representative: Ridley, Daniel et al Kilburn & Strode LLP Lacon London 84 Theobalds Road London WC1X 8NL London WC1X 8NL (GB)