Библиографическая ссылка на патент
Pat. 11539299 United States, Int. Cl.22 H02M 3/335, H02M 3/00. Switching power supply unit and electric power supply system : Appl. N 17/224418 : Filed 07.04.2021 : Pub. 27.12.2022 : / Masahiko Hirokawa, Naoyuki Ishibashi, Xiaofeng Wu ; Assignee Tdk Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11539299/en?oq=US11539299.html (дата обращения: ДД.ММ.ГГГГ).