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Pat. 11121632 United States, Int. Cl.22 H02M 3/158, H02M 1/088, H02M 3/157. Advanced constant off-time control for four-switch buck-boost converter : Appl. N 16/747781 : Filed 21.01.2020 : Pub. 14.09.2021 : / Bo Yang, Xiaoyu Xi, David Meng ; Assignee M3 Technology Inc Taiwan ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11121632/en?oq=US11121632.html (дата обращения: ДД.ММ.ГГГГ).