High-efficiency high-current drive power converter IC for wearable medical devices

Yen Chia Chu, Nabi Sertac Artan, Dariusz Czarkowski, Le Ren Chang-Chien, H. Jonathan Chao

Research output: Contribution to journalArticle

Abstract

Nowadays multi-functional wearable devices generally require high current drive capability because microcontrollers (MCU) or rechargeable batteries are embedded inside. To achieve both high current and high power efficiency, this article presents a switched-inductor-based AC-DC buck converter that is implemented on a 0.18μm chip manufacturing process for transcutaneously powered wearable devices. Different from multi-stage AC-DC converters that were widely used for wearable devices, the presented single-stage circuit has concise structure but provides flexible voltage output, high efficiency, and high current drive capability. The maximum output current can go up to 250 mA, and the peak efficiency is measured as 80.1% for 100mA load current. The chip size is 185μm × 260 μm.

Original languageEnglish (US)
JournalIEICE Electronics Express
Volume12
Issue number24
DOIs
StatePublished - Dec 4 2015

Fingerprint

power converters
Power converters
high current
converters
alternating current
direct current
chips
Secondary batteries
output
power efficiency
inductors
Microcontrollers
electric batteries
manufacturing
Networks (circuits)
Electric potential
electric potential

Keywords

  • AC-DC power converter
  • PWM rectifier
  • Rectifier
  • Wearable biomedical devices
  • Wireless power transfer

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

High-efficiency high-current drive power converter IC for wearable medical devices. / Chu, Yen Chia; Artan, Nabi Sertac; Czarkowski, Dariusz; Chang-Chien, Le Ren; Chao, H. Jonathan.

In: IEICE Electronics Express, Vol. 12, No. 24, 04.12.2015.

Research output: Contribution to journalArticle

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