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A 0.15-V, 44.73% PCE charge pump with CMOS differential ring-VCO for energy harvesting systems | |
Pakkirisami Churchill, Kishore Kumar1; Ramiah, Harikrishnan1; Chong, Gabriel1; Ahmad, Mohd Yazed2; Yin, Jun3; Mak, Pui In4; Martins, Rui P.4,5 | |
2022-04-01 | |
Source Publication | Analog Integrated Circuits and Signal Processing |
ISSN | 0925-1030 |
Volume | 111Issue:1Pages:35-43 |
Abstract | 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 MΩ with an incremental step of 100 k and 2 MΩ, 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 MΩ 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. |
Keyword | Charge Pump Dc-to-dc Conversion Dynamic Voltage Frequency Scaling (Dvfs) Energy Harvesting Ring-voltage ContRolled Oscillator (Ro) |
DOI | 10.1007/s10470-021-01980-2 |
URL | View the original |
Indexed By | SCIE |
Language | 英語English |
WOS Research Area | Computer Science ; Engineering |
WOS Subject | Computer Science, Hardware & Architecture ; Engineering, Electrical & Electronic |
WOS ID | WOS:000749240400001 |
Scopus ID | 2-s2.0-85123577388 |
Fulltext Access | |
Citation statistics | |
Document Type | Journal article |
Collection | THE STATE KEY LABORATORY OF ANALOG AND MIXED-SIGNAL VLSI (UNIVERSITY OF MACAU) Faculty of Science and Technology INSTITUTE OF MICROELECTRONICS DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING |
Corresponding Author | Ramiah, Harikrishnan |
Affiliation | 1.Department of Electrical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia 2.Department of Biomedical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur, 50603, Malaysia 3.State-Key Laboratory of Analog and Mixed-Signal VLSI/IME, University of Macau, Macao 4.State-Key Laboratory of Analog and Mixed-Signal VLSI/IME, and Faculty of Science and Technology - ECE, University of Macau, Macao 5.Instituto Superior Técnico, Universidade de Lisboa, Lisbson, Portugal |
Recommended Citation GB/T 7714 | Pakkirisami Churchill, Kishore Kumar,Ramiah, Harikrishnan,Chong, Gabriel,et al. A 0.15-V, 44.73% PCE charge pump with CMOS differential ring-VCO for energy harvesting systems[J]. Analog Integrated Circuits and Signal Processing, 2022, 111(1), 35-43. |
APA | Pakkirisami Churchill, Kishore Kumar., Ramiah, Harikrishnan., Chong, Gabriel., Ahmad, Mohd Yazed., Yin, Jun., Mak, Pui In., & 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), 35-43. |
MLA | Pakkirisami Churchill, Kishore Kumar,et al."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(2022):35-43. |
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