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Pat. 9887633 United States, Int. Cl.22 H02M 3/335, H02M 1/00, H02M 3/24, H02M 5/42, H02M 7/44, H02M 7/68. Resonant converter control techniques to manage negative SR current : Appl. N 14/616987 : Filed 09.02.2015 : Pub. 06.02.2018 : / Hang-Seok Choi ; Assignee Fairchild Semiconductor Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9887633/en?oq=US9887633.html (дата обращения: ДД.ММ.ГГГГ).