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Pat. 9893625 United States, Int. Cl.22 H02M 3/158, H02M 1/00, H02M 3/28, H02M 3/335, H02M 1/32. Direct current to direct current power supply apparatus : Appl. N 14/662931 : Filed 19.03.2015 : Pub. 13.02.2018 : / Wen-Hua Li, Sheng-Li Lu, Zhong-Wang Yang, Jin-Ying Zhang, Qiong Zhang ; Assignee Delta Electronics Shanghai Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9893625/en?oq=US9893625.html (дата обращения: ДД.ММ.ГГГГ).