A Dynamic Threshold Cancellation Technique for a High-Power Conversion Efficiency CMOS Rectifier.

António Godinho, Zhaochu Yang, Tao Dong, Luís Gonçalves, Paulo Mendes, Yumei Wen, Ping Li, Zhuangde Jiang

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Article in Sensors (Basel, Switzerland), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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8 authors.

António GodinhoChongqing Key Laboratory of Micro-Nano Systems and Smart Transduction, Collaborative Innovation Center on Micro-Nano Transduction and Intelligent Eco-Internet of Things, Chongqing Key Laboratory of Colleges and Universities on Micro-Nano Systems Technology and Smart Transducing, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing 400067, China.

Zhaochu YangChongqing Key Laboratory of Micro-Nano Systems and Smart Transduction, Collaborative Innovation Center on Micro-Nano Transduction and Intelligent Eco-Internet of Things, Chongqing Key Laboratory of Colleges and Universities on Micro-Nano Systems Technology and Smart Transducing, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing 400067, China.

Tao DongDepartment of Microsystems (IMS), Faculty of Technology Natural Sciences and Maritime Sciences, University of South-Eastern Norway, 3616 Kongsberg, Norway.

Luís GonçalvesCenter for MicroElectromechanical Systems (CMEMS-UMinho), University of Minho, 4800-058 Guimarães, Portugal.

Paulo MendesCenter for MicroElectromechanical Systems (CMEMS-UMinho), University of Minho, 4800-058 Guimarães, Portugal.

Yumei WenSchool of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

Ping LiSchool of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

Zhuangde JiangChongqing Key Laboratory of Micro-Nano Systems and Smart Transduction, Collaborative Innovation Center on Micro-Nano Transduction and Intelligent Eco-Internet of Things, Chongqing Key Laboratory of Colleges and Universities on Micro-Nano Systems Technology and Smart Transducing, National Research Base of Intelligent Manufacturing Service, Chongqing Technology and Business University, Chongqing 400067, China.

Funding

Chongqing Education Commission-Science and Technology Research Program KJZD- 358 K201800802Chongqing Education Commission-Science and Technology Research Program KJZDK201900802Chongqing Education Commission-Science and Technology Research Program KLZD-K202000805Chongqing Research Program of Basic and Frontier Technology Cstc2018jcyjA3877Chongqing Research Program of Basic and Frontier Technology cstc2018jcyjAX0474Chongqing Research Program of Basic and Frontier Technology cstc2019jcyj-msxmX0776National Natural Science Foundation of China 61531008Regionale forskningsfond Agder 321343Regionale forskningsfond Oslofjordfondet 285575

6 · The paper itself

Abstract

Power conversion efficiency (PCE) has been one of the key concerns for power management circuits (PMC) due to the low output power of the vibrational energy harvesters. This work reports a dynamic threshold cancellation technique for a high-power conversion efficiency CMOS rectifier. The proposed rectifier consists of two stages, one passive stage with a negative voltage converter, and another stage with an active diode controlled by a threshold cancellation circuit. The former stage conducts the signal full-wave rectification with a voltage drop of 1 mV, whereas the latter reduces the reverse leakage current, consequently enhancing the output power delivered to the ohmic load. As a result, the rectifier can achieve a voltage and power conversion efficiency of over 99% and 90%, respectively, for an input voltage of 0.45 V and for low ohmic loads. The proposed circuit is designed in a standard 130 nm CMOS process and works for an operating frequency range from 800 Hz to 51.2 kHz, which is promising for practical applications.

Indexed as

CMOS rectifierdynamic threshold cancellation techniquehigh power conversion efficiencypower management circuitvibration energy harvester

Identifiers

PMID34696101

DOI10.3390/s21206883

PMCPMC8538867

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