Autors: Brusev, T. S.
Title: Hysteresis Controlled Switching-Mode Amplifier for LTE Applications
Keywords: switching-mode converter, CMOS 0.35 μm,process, Cadence, LTE

Abstract: Switching-mode amplifiers are used in power supply circuits, which deliver the energy to the transmitter’s power amplifier (PA) for fourth generation Long-Term Evolution (4G LTE) applications. They could be part of series or parallel hybrid envelope amplifier (EA) architectures in combination respectively with linear amplifier. In this case switching-mode amplifier supplies about 80% of necessary power to the PA. Therefore efficiency of this stage strongly affects the overall efficiency of the envelope tracking power amplifier (ET PA) system. Switching-mode converters are used also in the interleaved multiphase structures, which perform the function of EA in 4G LTE transmitter. In this paper are presented investigation results of hysteresis controlled switching mode buck converter designed on CMOS 0.35 μm process.


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iCEST2015, pp. 271-274, 2015, Bulgaria, ISBN 978-619-167-182-3

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