Power Management Analysis of Inductively-Powered Implants with 1X/2X Reconfigurable Rectifier

Author

Xing Li ; Chi-Ying Tsui ; Wing-Hung Ki

Author_Institution

Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong, China

Volume

62

Issue

3

fYear

2015

fDate

Mar-15

Firstpage

617

Lastpage

624

Abstract

Extensive power management analysis of an inductive power delivery system for medical implants with a 1X/2X reconfigurable rectifier is conducted to help achieve higher system voltage gain and higher system power transfer efficiency under different loading and coupling conditions. Input capacitance matching due to mode switching is analyzed and a matching compensation scheme is proposed. Analysis results could then be used to guide the design of the inductive power delivery system that employs the reconfigurable rectifier. The 1X/2X reconfigurable rectifier was fabricated using a 0.13 μm CMOS process. Measurement results verify the correctness of the analysis and demonstrate the effectiveness of the matching compensation method.

Keywords

CMOS integrated circuits; inductive power transmission; prosthetics; rectifiers; 1X reconfigurable rectifier; 2X reconfigurable rectifier; CMOS process; capacitance matching; inductive power delivery system; inductively powered implants; matching compensation; medical implants; mode switching; power management analysis; size 0.13 mum; Capacitance; Coils; Couplings; Impedance; Loading; Resistance; Switches; Implantable medical device; inductive powering; matching; reconfigurable rectifier;

fLanguage

English

Journal_Title

Circuits and Systems I: Regular Papers, IEEE Transactions on

Publisher

ieee

ISSN

1549-8328

Type

jour

DOI

10.1109/TCSI.2014.2366814

Filename

6977994