A 20 MHz 200-500 mA Monolithic Buck Converter for RF Applications

A 20 MHz 200-500 mA Monolithic Buck Converter for RF Applications

In an RF system power amplifiers (PAs) typically consume the most power. This paper presents a buck converter design optimised for a wideband code division multiple access (WCDMA) PA. The design approach taken focuses on the optimization of switch sizing based on the overall power losses of the syst...

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Bibliographische Detailangaben
Hauptverfasser: Hannon, J., Foley, R., Griffiths, J., O'Sullivan, D., McCarthy, K.G., Egan, M.G.
Format: Tagungsbericht
Sprache:eng
Schlagworte:
Broadband amplifiers
Buck converters
Design optimization
Inductors
Multiaccess communication
Power amplifiers
Radio frequency
Radiofrequency amplifiers
Switches
Wideband
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Beschreibung
Zusammenfassung:In an RF system power amplifiers (PAs) typically consume the most power. This paper presents a buck converter design optimised for a wideband code division multiple access (WCDMA) PA. The design approach taken focuses on the optimization of switch sizing based on the overall power losses of the system including the output inductor losses. The converter is optimised for 20 MHz switching and output currents in the range of 200-500 mA. Experimented results are presented on the fabricated converter, with a maximum measured efficiency of 82%.
ISSN:1048-2334
2470-6647
DOI:10.1109/APEC.2009.4802705