±3% voltage variation and 95% efficiency 28nm constant on-time controlled step-down switching regulator directly supplying to Wi-Fi systems

Wei Chung Chen, Yung Sheng Huang, Meng Wei Chien, Ying Wei Chou, Hsin Chieh Chen, Yi Ping Su, Ke-Horng Chen, Chin Long Wey, Ying Hsi Lin, Tsung Yen Tsai, Chen Chih Huang, Chao Cheng Lee

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

4 Scopus citations

Abstract

For high efficiency, the proposed constant on-time controlled switching regulator (SWR) directly supplies to Wi-Fi systems without cascading any low dropout regulators. On-time value adjusted by the proposed transient-enhanced technique greatly reduces transient voltage variations. Besides, an asynchronous auto-zero technique is used to minimize offset voltage effect to ±0.5% in steady state. Experimental results show voltage variation is smaller than ±3% and peak efficiency is 95% with a small silicon area of 0.0019mm 2, which is only one-twentieth of conventional design. The proposed well-regulated SWR can improve error vector magnitude (EVM) from-27.2dB to-33.6dB.

Original languageEnglish
Title of host publication2014 Symposium on VLSI Circuits, VLSIC 2014 - Digest of Technical Papers
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9781479933273
DOIs
StatePublished - 1 Jan 2014
Event28th IEEE Symposium on VLSI Circuits, VLSIC 2014 - Honolulu, HI, United States
Duration: 10 Jun 201413 Jun 2014

Publication series

NameIEEE Symposium on VLSI Circuits, Digest of Technical Papers

Conference

Conference28th IEEE Symposium on VLSI Circuits, VLSIC 2014
Country/TerritoryUnited States
CityHonolulu, HI
Period10/06/1413/06/14

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