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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 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 https://ieeexplore.ieee.org/document/1603688 Restricted access - publisher's policy