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Pat. 11223285 United States, Int. Cl.22 H02M 3/335. DC-DC conversion system and control method of DC-DC conversion system : Appl. N 16/817586 : Filed 12.03.2020 : Pub. 11.01.2022 : / Yi Zhang, Er-Dong Chen, Hong-Wei Xiao, Zhao Wang, Pian Zhou, Jian-Ping Ying, Teng Liu ; Assignee Delta Electronics Shanghai Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11223285/en?oq=US11223285.html (дата обращения: ДД.ММ.ГГГГ).