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Pat. 10153708 United States, Int. Cl.22 H02M 7/537, H01L 25/11, H01L 25/18, H02M 7/00, H02M 7/48, H02M 7/483, H02M 7/487, H05K 5/00, H05K 5/02. Three-level power converter : Appl. N 15/230968 : Filed 08.08.2016 : Pub. 11.12.2018 : / Koji Maruyama, Takaaki Tanaka ; Assignee Fuji Electric Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10153708/en?oq=US10153708.html (дата обращения: ДД.ММ.ГГГГ).