A near-optimum 13.56 MHz active rectifier with circuit-delay real-time calibrations for high-current biomedical implants

Cheng Huang, Toru Kawajiri, Hiroki Ishikuro

研究成果: Conference contribution

7 被引用数 (Scopus)

抄録

This paper presents a 13.56MHz active rectifier with enhanced power conversion efficiency (PCE) and voltage conversion ratio (VCR) for high-current biomedical implants. Near-optimum operation with compensated circuit delays is achieved by the proposed real-time NMOS on/off calibrations, which minimize the reverse current and maximize the transistor conduction time under various process, voltage, temperature and loading conditions. Adaptive sizing (AS) is also introduced to optimize the PCE over a wide loading range. Measurements in TSMC 65nm show more than 36% and 17% improvement in PCE and VCR, respectively, by the proposed techniques. With 2.5V input amplitude, the rectifier achieves a peak PCE of 94.8% with an 80Ω loading, a peak VCR of 98.7% with a 1kΩ loading, and a maximum output power of 248.1mW.

本文言語English
ホスト出版物のタイトル2015 IEEE Custom Integrated Circuits Conference, CICC 2015
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781479986828
DOI
出版ステータスPublished - 2015 11月 25
イベントIEEE Custom Integrated Circuits Conference, CICC 2015 - San Jose, United States
継続期間: 2015 9月 282015 9月 30

出版物シリーズ

名前Proceedings of the Custom Integrated Circuits Conference
2015-November
ISSN(印刷版)0886-5930

Other

OtherIEEE Custom Integrated Circuits Conference, CICC 2015
国/地域United States
CitySan Jose
Period15/9/2815/9/30

ASJC Scopus subject areas

  • 電子工学および電気工学

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