On-Chip AC-DC Multiple-Power-Supplies Module for Transcutaneously Powered Wearable Medical Devices

Yen Chia Chu, Le Ren Chang-Chien, N. Sertac Artan, Dariusz Czarkowski, Chih Hsiang Chang, Jialin Zou, H. Jonathan Chao

Research output: Contribution to journalArticle

Abstract

Replacing the batteries of wearable medical devices is an inconvenience to the user. Wireless power transfer (WPT) could be a solution for this problem. However, the structure should be compact to satisfy the wearable device requirements and the power efficiency should be as high as possible for prolonging the user experience. Besides, as algorithms embedded in these devices become more complex, the device power consumption also increases. Fulfilling these specifications in a compact structure with better efficiency is the aim of this research paper. This paper proposes a power processing module for WPT applications. This module is embedded within the WPT path to convert receiving end ac power to dc power, and to simultaneously provide multiple dc-dc power conversion for wearable medical devices. The ac-dc circuit is specifically designed using a compact topology to convert wireless ac power to stable dc power. The dc power is further regulated by different mode controls either to perform battery charging or to provide independent voltage supplies to dc loads. The integrated circuit occupies an area of 1.9 × 2.3 mm when implemented on a 0.25 μm high voltage CMOS process.

Original languageEnglish (US)
Pages (from-to)1724-1736
Number of pages13
JournalIEEE Transactions on Industry Applications
Volume54
Issue number2
DOIs
StatePublished - Mar 1 2018

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Keywords

  • AC-DC power converter
  • battery charger
  • pulse-width modulation (PWM) rectifier
  • rectifier
  • transcutaneous power transmission
  • wearable medical devices
  • wireless power transfer (WPT)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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