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Pat. 10763745 United States, Int. Cl.22 H02M 3/07, G11C 5/14, H02M 1/00, H02M 1/12. Variable-frequency electric charge pump unit, chip, and communication terminal : Appl. N 16/313707 : Filed 30.06.2017 : Pub. 01.09.2020 : / Sheng Lin ; Assignee Vanchip Tianjin Electronic Technology Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10763745/en?oq=US10763745.html (дата обращения: ДД.ММ.ГГГГ).