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

4 引用 (Scopus)

抜粋

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.

元の言語English
ホスト出版物のタイトルProceedings of the Custom Integrated Circuits Conference
出版者Institute of Electrical and Electronics Engineers Inc.
2015-November
ISBN(印刷物)9781479986828
DOI
出版物ステータスPublished - 2015 11 25
イベントIEEE Custom Integrated Circuits Conference, CICC 2015 - San Jose, United States
継続期間: 2015 9 282015 9 30

Other

OtherIEEE Custom Integrated Circuits Conference, CICC 2015
United States
San Jose
期間15/9/2815/9/30

    フィンガープリント

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

これを引用

Huang, C., Kawajiri, T., & Ishikuro, H. (2015). A near-optimum 13.56 MHz active rectifier with circuit-delay real-time calibrations for high-current biomedical implants. : Proceedings of the Custom Integrated Circuits Conference (巻 2015-November). [7338391] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CICC.2015.7338391