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Pat. 10811962 United States, Int. Cl.22 H02M 3/158, H02M 3/07, H02M 1/00. Multi-level switching power converter, and controller circuit and control method thereof : Appl. N 16/680599 : Filed 12.11.2019 : Pub. 20.10.2020 : / Yung-Chun Chuang, Tsung-Wei Huang ; Assignee Richtek Technology Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10811962/en?oq=US10811962.html (дата обращения: ДД.ММ.ГГГГ).