Envelope tracking power supply for volume-sensitive low-power applications based on a resonant switched-capacitor converter

Alon Cervera, Mor Mordechai Peretz

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

10 Scopus citations

Abstract

This paper introduces a new envelope tracking power supply to enhance the performance and reduce the overall volume of transmitter modules. The realization is based on a gyrator resonant switched-capacitor converter (GRSCC) that acts as a controlled bi-directional current source with a virtually instantaneous response to create the desired envelope. A quasi-non-casual control method is further applied to closely track high-rate signals without further increasing the switching frequency. The resultant dynamic performance for a given envelope reference signal is significantly improved, providing envelope supply voltage without clipping distortion. Design example and simulations are detailed, and the operation of envelope tracker is verified on a 150mW prototype switched at 2.3MHz, able to track a 1MHz envelope with less than half the losses of a linear regulator.

Original languageEnglish
Title of host publication2016 IEEE Applied Power Electronics Conference and Exposition, APEC 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2298-2303
Number of pages6
ISBN (Electronic)9781467383936
DOIs
StatePublished - 10 May 2016
Event31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016 - Long Beach, United States
Duration: 20 Mar 201624 Mar 2016

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2016-May

Conference

Conference31st Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2016
Country/TerritoryUnited States
CityLong Beach
Period20/03/1624/03/16

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