Design of a high efficiency multiple-inputs single-output switch capacitor-based DC-DC converter for energy harvesting system

Thermoelectric generators (TEGs) module acts as a source to harvest thermal energy and convert the temperature gradient into DC voltage. Due to its low electricity produced, the DC-DC converter is the key module to boost minimal voltage to feasible electricity. The setback of existing converter topo...

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Main Author:	Yap, Jim Hui
Format:	Thesis
Language:	English English
Published:	2021
Subjects:	T Technology (General)
Online Access:	http://eprints.utem.edu.my/id/eprint/26047/1/Design%20of%20a%20high%20efficiency%20multiple-inputs%20single-output%20switch%20capacitor-based%20DC-DC%20converter%20for%20energy%20harvesting%20system.pdf http://eprints.utem.edu.my/id/eprint/26047/2/Design%20of%20a%20high%20efficiency%20multiple-inputs%20single-output%20switch%20capacitor-based%20DC-DC%20converter%20for%20energy%20harvesting%20system.pdf
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spelling	my-utem-ep.260472022-09-29T12:41:17Z Design of a high efficiency multiple-inputs single-output switch capacitor-based DC-DC converter for energy harvesting system 2021 Yap, Jim Hui T Technology (General) TK Electrical engineering. Electronics Nuclear engineering Thermoelectric generators (TEGs) module acts as a source to harvest thermal energy and convert the temperature gradient into DC voltage. Due to its low electricity produced, the DC-DC converter is the key module to boost minimal voltage to feasible electricity. The setback of existing converter topology such as inductor-based is the off-chip component makes fully integrated on-chip system a challenging task. Thus, the research focuses on the design of a cross-coupled charge pump in power management energy harvesting circuitry together with a start-up circuit and control circuit to form a regulated battery-less power management system. Multiple energy sources, RF and thermal energy have been used as the supply for the auxiliary circuitry and cross-coupled charge pump in the research. The proposed cross-coupled charge pump is designed based on an analytical approach that investigates the transistor’s size, the switching pulse’s frequency, the switching pulse’s slew rate and the capacitor’s size. The peak efficiency of the cross-coupled charge pump has been improved by analyzing these four main parameters. The proposed system can function at a minimum voltage of 30mV and achieve a step-up voltage of 1.2V in a fully integrated chip. The major contribution of this work is the design of the cross-coupled charge pump has successfully achieved an efficiency of 70.86%. RF and TEG signal are utilized as voltage supply and input for the entire power management system. Due to the multiple energy harvesting sources, auxiliary circuitries can be fully integrated to form an on-chip power management system without an external inductor, capacitor and antenna to support the power management system and only occupy a chip size of 1.9358〖mm〗^2. Implementation of on–chip antenna for RF auxiliary circuitry achieves a more compressive fully integrated on-chip system. In overall, the entire design configuration has managed to reduce the mismatch of the off-chip component on the on-chip power management system as well as to reduce the package of the chip size. 2021 Thesis http://eprints.utem.edu.my/id/eprint/26047/ http://eprints.utem.edu.my/id/eprint/26047/1/Design%20of%20a%20high%20efficiency%20multiple-inputs%20single-output%20switch%20capacitor-based%20DC-DC%20converter%20for%20energy%20harvesting%20system.pdf text en public http://eprints.utem.edu.my/id/eprint/26047/2/Design%20of%20a%20high%20efficiency%20multiple-inputs%20single-output%20switch%20capacitor-based%20DC-DC%20converter%20for%20energy%20harvesting%20system.pdf text en validuser https://plh.utem.edu.my/cgi-bin/koha/opac-detail.pl?biblionumber=121234 mphil masters Universiti Teknikal Malaysia Melaka Faculty of Electronic and Computer Engineering Wong, Yan Chiew
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English English
advisor	Wong, Yan Chiew
topic	T Technology (General) T Technology (General)
spellingShingle	T Technology (General) T Technology (General) Yap, Jim Hui Design of a high efficiency multiple-inputs single-output switch capacitor-based DC-DC converter for energy harvesting system
description	Thermoelectric generators (TEGs) module acts as a source to harvest thermal energy and convert the temperature gradient into DC voltage. Due to its low electricity produced, the DC-DC converter is the key module to boost minimal voltage to feasible electricity. The setback of existing converter topology such as inductor-based is the off-chip component makes fully integrated on-chip system a challenging task. Thus, the research focuses on the design of a cross-coupled charge pump in power management energy harvesting circuitry together with a start-up circuit and control circuit to form a regulated battery-less power management system. Multiple energy sources, RF and thermal energy have been used as the supply for the auxiliary circuitry and cross-coupled charge pump in the research. The proposed cross-coupled charge pump is designed based on an analytical approach that investigates the transistor’s size, the switching pulse’s frequency, the switching pulse’s slew rate and the capacitor’s size. The peak efficiency of the cross-coupled charge pump has been improved by analyzing these four main parameters. The proposed system can function at a minimum voltage of 30mV and achieve a step-up voltage of 1.2V in a fully integrated chip. The major contribution of this work is the design of the cross-coupled charge pump has successfully achieved an efficiency of 70.86%. RF and TEG signal are utilized as voltage supply and input for the entire power management system. Due to the multiple energy harvesting sources, auxiliary circuitries can be fully integrated to form an on-chip power management system without an external inductor, capacitor and antenna to support the power management system and only occupy a chip size of 1.9358〖mm〗^2. Implementation of on–chip antenna for RF auxiliary circuitry achieves a more compressive fully integrated on-chip system. In overall, the entire design configuration has managed to reduce the mismatch of the off-chip component on the on-chip power management system as well as to reduce the package of the chip size.
format	Thesis
qualification_name	Master of Philosophy (M.Phil.)
qualification_level	Master's degree
author	Yap, Jim Hui
author_facet	Yap, Jim Hui
author_sort	Yap, Jim Hui
title	Design of a high efficiency multiple-inputs single-output switch capacitor-based DC-DC converter for energy harvesting system
title_short	Design of a high efficiency multiple-inputs single-output switch capacitor-based DC-DC converter for energy harvesting system
title_full	Design of a high efficiency multiple-inputs single-output switch capacitor-based DC-DC converter for energy harvesting system
title_fullStr	Design of a high efficiency multiple-inputs single-output switch capacitor-based DC-DC converter for energy harvesting system
title_full_unstemmed	Design of a high efficiency multiple-inputs single-output switch capacitor-based DC-DC converter for energy harvesting system
title_sort	design of a high efficiency multiple-inputs single-output switch capacitor-based dc-dc converter for energy harvesting system
granting_institution	Universiti Teknikal Malaysia Melaka
granting_department	Faculty of Electronic and Computer Engineering
publishDate	2021
url	http://eprints.utem.edu.my/id/eprint/26047/1/Design%20of%20a%20high%20efficiency%20multiple-inputs%20single-output%20switch%20capacitor-based%20DC-DC%20converter%20for%20energy%20harvesting%20system.pdf http://eprints.utem.edu.my/id/eprint/26047/2/Design%20of%20a%20high%20efficiency%20multiple-inputs%20single-output%20switch%20capacitor-based%20DC-DC%20converter%20for%20energy%20harvesting%20system.pdf
_version_	1747834161020796928

Design of a high efficiency multiple-inputs single-output switch capacitor-based DC-DC converter for energy harvesting system

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