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Pat. 11527960 United States, Int. Cl.22 H02M 3/335, H02M 1/08, H02M 1/40. Auxiliary power supply apparatus and method for isolated power converters : Appl. N 16/865762 : Filed 04.05.2020 : Pub. 13.12.2022 : / Yushan Li, Liming Ye, Heping Dai ; Assignee Huawei Digital Power Technologies Co Ltd ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US11527960/en?oq=US11527960.html (дата обращения: ДД.ММ.ГГГГ).