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A 0.15-V, 44.73% PCE charge pump with CMOS differential ring-VCO for energy harvesting systems

This paper proposes a dynamic voltage frequency scaling technique (DVFS) for a CMOS differential bootstrapped ring-voltage controlled oscillator (DBRO), implemented in a 3-stage cross-coupled charge pump (CC-CP), for energy harvesting (EH) applications. A circuit applying this technique known as spl...

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Main Authors: Churchill, Kishore Kumar Pakkirisami, Ramiah, Harikrishnan, Chong, Gabriel, Ahmad, Mohd Yazed, Yin, Jun, Mak, Pui-In, Martins, Rui P.
Format: Article
Published: Springer 2022
Subjects:
QA75 Electronic computers. Computer science
TA Engineering (General). Civil engineering (General)
Online Access:http://eprints.um.edu.my/33455/
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spelling my.um.eprints.334552022-08-15T00:43:14Z http://eprints.um.edu.my/33455/ A 0.15-V, 44.73% PCE charge pump with CMOS differential ring-VCO for energy harvesting systems Churchill, Kishore Kumar Pakkirisami Ramiah, Harikrishnan Chong, Gabriel Ahmad, Mohd Yazed Yin, Jun Mak, Pui-In Martins, Rui P. QA75 Electronic computers. Computer science TA Engineering (General). Civil engineering (General) This paper proposes a dynamic voltage frequency scaling technique (DVFS) for a CMOS differential bootstrapped ring-voltage controlled oscillator (DBRO), implemented in a 3-stage cross-coupled charge pump (CC-CP), for energy harvesting (EH) applications. A circuit applying this technique known as split input-supply, fabricated in the 130-nm CMOS, compares a signal with an input range of 0.15-0.5 V along with a load of 100 k-1 M omega with an incremental step of 100 k and 2 M omega, respectively. The technique allows the DVFS-DBRO to operate with optimum frequency and lower power consumption, which improves the power conversion efficiency (PCE) as well as establishes a wide energy harvesting range. The circuit observes a 44.73% of PCE with 0.15 V input voltage when driving a 2 M omega load. DVFS also offers a twofold clock boosting of the input voltage without the voltage scaling effect, which improves the charge-pump conduction at low input voltage and allows a gate-to-source input voltage of 0.5 V. These characteristics improve the robustness of the proposed technique and exhibits great potential for a wide input range of EH applications. Springer 2022-04 Article PeerReviewed Churchill, Kishore Kumar Pakkirisami and Ramiah, Harikrishnan and Chong, Gabriel and Ahmad, Mohd Yazed and Yin, Jun and Mak, Pui-In and Martins, Rui P. (2022) A 0.15-V, 44.73% PCE charge pump with CMOS differential ring-VCO for energy harvesting systems. Analog Integrated Circuits and Signal Processing, 111 (1). pp. 35-43. ISSN 0925-1030, DOI https://doi.org/10.1007/s10470-021-01980-2 <https://doi.org/10.1007/s10470-021-01980-2>. 10.1007/s10470-021-01980-2
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QA75 Electronic computers. Computer science
TA Engineering (General). Civil engineering (General)
spellingShingle QA75 Electronic computers. Computer science
TA Engineering (General). Civil engineering (General)
Churchill, Kishore Kumar Pakkirisami
Ramiah, Harikrishnan
Chong, Gabriel
Ahmad, Mohd Yazed
Yin, Jun
Mak, Pui-In
Martins, Rui P.
A 0.15-V, 44.73% PCE charge pump with CMOS differential ring-VCO for energy harvesting systems
description This paper proposes a dynamic voltage frequency scaling technique (DVFS) for a CMOS differential bootstrapped ring-voltage controlled oscillator (DBRO), implemented in a 3-stage cross-coupled charge pump (CC-CP), for energy harvesting (EH) applications. A circuit applying this technique known as split input-supply, fabricated in the 130-nm CMOS, compares a signal with an input range of 0.15-0.5 V along with a load of 100 k-1 M omega with an incremental step of 100 k and 2 M omega, respectively. The technique allows the DVFS-DBRO to operate with optimum frequency and lower power consumption, which improves the power conversion efficiency (PCE) as well as establishes a wide energy harvesting range. The circuit observes a 44.73% of PCE with 0.15 V input voltage when driving a 2 M omega load. DVFS also offers a twofold clock boosting of the input voltage without the voltage scaling effect, which improves the charge-pump conduction at low input voltage and allows a gate-to-source input voltage of 0.5 V. These characteristics improve the robustness of the proposed technique and exhibits great potential for a wide input range of EH applications.
format Article
author Churchill, Kishore Kumar Pakkirisami
Ramiah, Harikrishnan
Chong, Gabriel
Ahmad, Mohd Yazed
Yin, Jun
Mak, Pui-In
Martins, Rui P.
author_facet Churchill, Kishore Kumar Pakkirisami
Ramiah, Harikrishnan
Chong, Gabriel
Ahmad, Mohd Yazed
Yin, Jun
Mak, Pui-In
Martins, Rui P.
author_sort Churchill, Kishore Kumar Pakkirisami
title A 0.15-V, 44.73% PCE charge pump with CMOS differential ring-VCO for energy harvesting systems
title_short A 0.15-V, 44.73% PCE charge pump with CMOS differential ring-VCO for energy harvesting systems
title_full A 0.15-V, 44.73% PCE charge pump with CMOS differential ring-VCO for energy harvesting systems
title_fullStr A 0.15-V, 44.73% PCE charge pump with CMOS differential ring-VCO for energy harvesting systems
title_full_unstemmed A 0.15-V, 44.73% PCE charge pump with CMOS differential ring-VCO for energy harvesting systems
title_sort 0.15-v, 44.73% pce charge pump with cmos differential ring-vco for energy harvesting systems
publisher Springer
publishDate 2022
url http://eprints.um.edu.my/33455/
_version_ 1744649155780804608
score 13.211869

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