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Pat. 9935558 United States, Int. Cl.22 H02M 3/335, B60L 1/00, H02M 1/32, H02M 3/00, H05K 7/14, H05K 7/20, H05K 7/02. DC-DC converter apparatus including single drive circuit board arranged at predetermined interval from metal base : Appl. N 15/027388 : Filed 01.10.2014 : Pub. 03.04.2018 : / Tatsuya Nakazawa, Yuji Sobu, Hidenori Shinohara, Yoshiharu Yamashita ; Assignee Hitachi Automotive Systems Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9935558/en?oq=US9935558.html (дата обращения: ДД.ММ.ГГГГ).