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Pat. 10644600 United States, Int. Cl.22 H02M 3/158, H02M 3/156, H02M 1/00. Constant-time buck-boost switching regulator and control circuit and control method thereof : Appl. N 16/171422 : Filed 26.10.2018 : Pub. 05.05.2020 : / Kuo-Chun Wu, Hung-Yu Cheng ; Assignee Richtek Technology Corp ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10644600/en?oq=US10644600.html (дата обращения: ДД.ММ.ГГГГ).