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Pat. 10333397 United States, Int. Cl.22 H02M 3/07. Multi-stage charge pump circuit operating to simultaneously generate both a positive voltage and a negative voltage : Appl. N 15/652748 : Filed 18.07.2017 : Pub. 25.06.2019 : / Vikas Rana, Abhishek Mittal ; Assignee Stmicroelectronics International Nv ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10333397/en?oq=US10333397.html (дата обращения: ДД.ММ.ГГГГ).