A Low-Power CMOS Piezoelectric Transducer Based Energy Harvesting Circuit for Wearable Sensors for Medical Applications

A Low-Power CMOS Piezoelectric Transducer Based Energy Harvesting Circuit for Wearable Sensors for Medical Applications

Piezoelectric vibration based energy harvesting systems have been widely utilized and researched as powering modules for various types of sensor systems due to their ease of integration and relatively high energy density compared to RF, thermal, and electrostatic based energy harvesting systems. In...

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Bibliographic Details
Main Authors: Taeho Oh, Syed K. Islam, Mohamad Mahfouz, Gary To
Format: Article
Language:English
Published: MDPI AG 2017-12-01
Series:Journal of Low Power Electronics and Applications
Subjects:
AC-DC power conversion
energy harvesting
piezoelectric transducer
active rectifier
switch based rectifier
Online Access:https://www.mdpi.com/2079-9268/7/4/33
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spelling doaj-2fdb912edddc4e32a484e314dd57d2a82020-11-25T01:02:25ZengMDPI AGJournal of Low Power Electronics and Applications2079-92682017-12-01743310.3390/jlpea7040033jlpea7040033A Low-Power CMOS Piezoelectric Transducer Based Energy Harvesting Circuit for Wearable Sensors for Medical ApplicationsTaeho Oh0Syed K. Islam1Mohamad Mahfouz2Gary To3Department of Electrical Engineering and Computer Science, University of Tennessee, Knoxville, TN 37996-2250, USADepartment of Electrical Engineering and Computer Science, University of Tennessee, Knoxville, TN 37996-2250, USADepartment of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996-2210, USADepartment of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, TN 37996-2210, USAPiezoelectric vibration based energy harvesting systems have been widely utilized and researched as powering modules for various types of sensor systems due to their ease of integration and relatively high energy density compared to RF, thermal, and electrostatic based energy harvesting systems. In this paper, a low-power CMOS full-bridge rectifier is presented as a potential solution for an efficient energy harvesting system for piezoelectric transducers. The energy harvesting circuit consists of two n-channel MOSFETs (NMOS) and two p-channel MOSFETs (PMOS) devices implementing a full-bridge rectifier coupled with a switch control circuit based on a PMOS device driven by a comparator. With a load of 45 kΩ, the output rectifier voltage and the input piezoelectric transducer voltage are 694 mV and 703 mV, respectably, while the VOUT versus VIN conversion ratio is 98.7% with a PCE of 52.2%. The energy harvesting circuit has been designed using 130 nm standard CMOS process.https://www.mdpi.com/2079-9268/7/4/33AC-DC power conversionenergy harvestingpiezoelectric transduceractive rectifierswitch based rectifier
collection DOAJ
language English
format Article
sources DOAJ
author Taeho Oh
Syed K. Islam
Mohamad Mahfouz
Gary To
spellingShingle Taeho Oh
Syed K. Islam
Mohamad Mahfouz
Gary To
A Low-Power CMOS Piezoelectric Transducer Based Energy Harvesting Circuit for Wearable Sensors for Medical Applications
Journal of Low Power Electronics and Applications
AC-DC power conversion
energy harvesting
piezoelectric transducer
active rectifier
switch based rectifier
author_facet Taeho Oh
Syed K. Islam
Mohamad Mahfouz
Gary To
author_sort Taeho Oh
title A Low-Power CMOS Piezoelectric Transducer Based Energy Harvesting Circuit for Wearable Sensors for Medical Applications
title_short A Low-Power CMOS Piezoelectric Transducer Based Energy Harvesting Circuit for Wearable Sensors for Medical Applications
title_full A Low-Power CMOS Piezoelectric Transducer Based Energy Harvesting Circuit for Wearable Sensors for Medical Applications
title_fullStr A Low-Power CMOS Piezoelectric Transducer Based Energy Harvesting Circuit for Wearable Sensors for Medical Applications
title_full_unstemmed A Low-Power CMOS Piezoelectric Transducer Based Energy Harvesting Circuit for Wearable Sensors for Medical Applications
title_sort low-power cmos piezoelectric transducer based energy harvesting circuit for wearable sensors for medical applications
publisher MDPI AG
series Journal of Low Power Electronics and Applications
issn 2079-9268
publishDate 2017-12-01
description Piezoelectric vibration based energy harvesting systems have been widely utilized and researched as powering modules for various types of sensor systems due to their ease of integration and relatively high energy density compared to RF, thermal, and electrostatic based energy harvesting systems. In this paper, a low-power CMOS full-bridge rectifier is presented as a potential solution for an efficient energy harvesting system for piezoelectric transducers. The energy harvesting circuit consists of two n-channel MOSFETs (NMOS) and two p-channel MOSFETs (PMOS) devices implementing a full-bridge rectifier coupled with a switch control circuit based on a PMOS device driven by a comparator. With a load of 45 kΩ, the output rectifier voltage and the input piezoelectric transducer voltage are 694 mV and 703 mV, respectably, while the VOUT versus VIN conversion ratio is 98.7% with a PCE of 52.2%. The energy harvesting circuit has been designed using 130 nm standard CMOS process.
topic AC-DC power conversion
energy harvesting
piezoelectric transducer
active rectifier
switch based rectifier
url https://www.mdpi.com/2079-9268/7/4/33
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