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Pat. 10340810 United States, Int. Cl.22 H02M 3/18, H02M 3/158, H02M 3/335, H02M 3/337, H02M 1/00, H02M 7/757. Bidirectional DC converter assembly having cascade of isolated resonant converter and step-up/step-down converter : Appl. N 16/199692 : Filed 26.11.2018 : Pub. 02.07.2019 : / Patrick Achtzehn, Jan Korte, Jens Czichon ; Assignee Leopold Kostal Gmbh and Co Kg ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10340810/en?oq=US10340810.html (дата обращения: ДД.ММ.ГГГГ).