Capacitance-sharing, dual-output, compact, switched-capacitor DC–DC converter for low-power biomedical implants

Author

Safarian, Z. ; Hashemi, Hossein

Author_Institution

Univ. of Southern California, Los Angeles, CA, USA

Volume

50

Issue

23

fYear

2014

fDate

11 6 2014

Firstpage

1673

Lastpage

1675

Abstract

A dual-output, compact, switched-capacitor DC-DC converter is presented for efficient voltage generation in low-power biomedical implants. By sharing the charge transfer capacitors between multiple independent switched-capacitor DC-DC converters, fewer capacitors are required, resulting in overall system size reduction. A proof-of-concept capacitance-sharing, dual-output DC-DC converter, converting 1.2 V - 0.4 V and 0.8 V, fabricated in a 0.13 μm CMOS technology, occupying 0.3 mm² and achieving a peak efficiency of 97.6% is demonstrated.

Keywords

CMOS integrated circuits; DC-DC power convertors; biomedical electronics; charge exchange; low-power electronics; prosthetics; switched capacitor networks; CMOS technology; capacitance-sharing DC-DC converter; charge transfer capacitor; compact DC-DC converter; dual-output DC-DC converter; low-power biomedical implants; size 0.13 mum; size 0.3 mm; switched-capacitor DC-DC converter; voltage 1.2 V to 0.4 V; voltage generation;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2014.1842

Filename

6955041