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Pat. 10256721 United States, Int. Cl.22 H02M 3/156, H02M 3/00, H02M 3/158, H01L 25/16. Step-down chopper circuit including a switching device circuit and a backflow prevention diode circuit : Appl. N 15/414970 : Filed 25.01.2017 : Pub. 09.04.2019 : / Osamu Hikone, Motoyoshi Kubouchi ; Assignee Fuji Electric Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10256721/en?oq=US10256721.html (дата обращения: ДД.ММ.ГГГГ).