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Pat. 10404169 United States, Int. Cl.22 H02M 3/158, H02M 3/156, H02M 1/00. System and method for extending the maximum duty cycle of a step-down switching converter without maximum duty control : Appl. N 14/864545 : Filed 24.09.2015 : Pub. 03.09.2019 : / Youngbok Kim ; Assignee Alpha and Omega Semiconductor Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US10404169/en?oq=US10404169.html (дата обращения: ДД.ММ.ГГГГ).