Библиографическая ссылка на патент
Pat. 9960693 United States, Int. Cl.22 H02M 3/335, H02M 1/00. Control of switching frequency based on difference in phase relations : Appl. N 15/336088 : Filed 27.10.2016 : Pub. 01.05.2018 : / Martin Feldtkeller ; Assignee Infineon Technologies Austria Ag ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9960693/en?oq=US9960693.html (дата обращения: ДД.ММ.ГГГГ).