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Pat. 11394291 United States, Int. Cl.22 H02M 1/14, H02M 1/15, H02M 3/156, H02M 3/157, H02M 3/158. Ripple voltage control circuit and control method thereof : Appl. N 17/223180 : Filed 06.04.2021 : Pub. 19.07.2022 : / Guowang Li ; Assignee Hangzhou Silergy Semiconductor Technology Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11394291/en?oq=US11394291.html (дата обращения: ДД.ММ.ГГГГ).