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Pat. 11114944 United States, Int. Cl.22 H02M 3/158. Fully integrated multi-phase buck converter with coupled air core inductors : Appl. N 16/707186 : Filed 09.12.2019 : Pub. 07.09.2021 : / Xin Zhang, Todd E. Takken, Naigang Wang, Leland Chang ; Assignee International Business Machines Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11114944/en?oq=US11114944.html (дата обращения: ДД.ММ.ГГГГ).