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Pat. 9929656 United States, Int. Cl.22 H02M 3/335, H02M 3/156, H02M 3/337, H02M 3/338, H02M 1/00, H02M 1/32. Power converter using multiple controllers : Appl. N 14/864501 : Filed 24.09.2015 : Pub. 27.03.2018 : / David Michael Hugh Matthews, Balu Balakrishnan, David Kung ; Assignee Power Integrations Inc ; NN p. : patents.google.com : URL: https://patents.google.com/patent/US9929656/en?oq=US9929656.html (дата обращения: ДД.ММ.ГГГГ).