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oai:recercat.cat:2117/3311492026-02-01T01:51:25Zcom_2072_1033col_2072_452950

Three-level buck converter for envelope tracking applications Yousefzadeh, Vahid Alarcón Cot, Eduardo José Maksimovic, Eduard Alarcón And Dragan Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica Universitat Politècnica de Catalunya. EPIC - Energy Processing and Integrated Circuits Àrees temàtiques de la UPC::Enginyeria electrònica::Electrònica de potència Power amplifiers Envelope elimination and restoration (EER) Radio frequency power amplifier (RFPA) Three-level buck converter Amplificadors de potència This letter proposes a three-level buck converter for tracking applications such as envelope-tracking in radio frequency power amplifiers (RFPAs). It is shown that the three-level buck converter can offer advantages in terms of switching ripples, losses, bandwidth, or the size of magnetic components compared to a standard buck or a two-phase buck converter. Experimental results illustrate improved efficiency and ripple rejection in an RFPA envelope-tracking application representative for low-power battery-operated systems. Peer Reviewed Postprint (published version) 2006-03 Article Yousefzadeh, V.; Alarcon, E.; Maksimovic, E. Three-level buck converter for envelope tracking applications. "IEEE power electronics letters", Març 2006, vol. 21, núm. 2, p. 549-552. 1540-7985 https://hdl.handle.net/2117/331149 10.1109/TPEL.2005.869728 eng https://ieeexplore.ieee.org/document/1603688 Restricted access - publisher's policy 4 p. application/pdf