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

Yen Chia Chu; Nabi Sertac Artan; Dariusz Czarkowski; Le Ren Chang-Chien; Jonathan Chao

doi:10.1587/elex.12.20150953

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

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

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

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 language	English (US)
Article number	20150953
Journal	IEICE Electronics Express
Volume	12
Issue number	24
DOIs	https://doi.org/10.1587/elex.12.20150953
State	Published - Dec 4 2015

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

Access to Document

10.1587/elex.12.20150953

Cite this

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title = "High-efficiency high-current drive power converter IC for wearable medical devices",

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.",

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AU - Artan, Nabi Sertac

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AU - Chang-Chien, Le Ren

AU - Chao, Jonathan

N1 - Publisher Copyright: © IEICE 2015.

PY - 2015/12/4

Y1 - 2015/12/4

N2 - 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.

AB - 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.

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

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

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