Sub-50-mV Charge Pump and its Driver for Extremely Low-Voltage Thermal Energy Harvesting

Sebe, Hikaru; Kanemoto, Daisuke; Hirose, Takahisa

doi:10.1109/iscas48785.2022.9937304

Cited by 3 publications

(4 citation statements)

References 29 publications

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“…In [79], a recursive body-biased stacked inverter is introduced. These authors [77] propose to stack additional inverters at the top and bottom of the inverter recursively as shown in Fig.…”

Section: Recursive Body-biased Stacked Invertermentioning

confidence: 99%

Recent Start-Up Techniques Intended for TEG Energy Harvesting: A Review

Ahmed,

Genevey,

Ali

et al. 2024

IEEE Access

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The growing number of energy-autonomous applications raises the need for reliable DC energy harvesting techniques such as Thermoelectric Generators (TEGs). One key issue, however, is the minimum voltage (40-60 mV) required for start-up in small TEG energy harvesting sources. We review in this paper recent start-up solutions for TEG energy harvesting technologies. Different solutions have been categorized into 5 main approaches: external battery, extra-fabrication-processbased, transformers, multisource energy harvesting, and DC-AC-DC conversion using oscillators. The "DC-AC-DC conversion ring oscillators" approach is then shown to be the most promising solution in line with DC energy harvesting applications because it offers several advantages over other approaches, such as allowing full integration with good performance, compatibility with regular CMOS technology, and lower cost. Then, its different implementations are discussed and a detailed analysis is provided to identify their respective advantages and limitations.

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Section: Recursive Body-biased Stacked Invertermentioning

confidence: 99%

Recent Start-Up Techniques Intended for TEG Energy Harvesting: A Review

Ahmed,

Genevey,

Ali

et al. 2024

IEEE Access

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Section: Introductionmentioning

confidence: 99%

“…Moreover, reset transistors are added to the MS-DRV to ensure an adequate non-overlapping (NOL) period between switching signals. In contrast to our previous work [24], we add some simulation results and discuss its circuit operation in more detail. In addition, we fabricate a proof-of-concept chip using a 180-nm CMOS process and demonstrate the effectiveness of our propose circuits.…”

Section: Introductionmentioning

confidence: 99%

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Sub-60-mV Charge Pump and its Driver Circuit for Extremely Low-Voltage Thermoelectric Energy Harvesting

SEBE,

KANEMOTO,

HIROSE

2024

IEICE Trans. Electron.

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Extremely low-voltage charge pump (ELV-CP) and its dedicated multi-stage driver (MS-DRV) for sub-60-mV thermoelectric energy harvesting are proposed. The proposed MS-DRV utilizes the output voltages of each ELV-CP to efficiently boost the control clock signals. The boosted clock signals are used as switching signals for each ELV-CP and MS-DRV to turn switch transistors on and off. Moreover, reset transistors are added to the MS-DRV to ensure an adequate non-overlapping period between switching signals. Measurement results demonstrated that the proposed MS-DRV can generate boosted clock signals of 350 mV from input voltage of 60 mV. The ELV-CP can boost the input voltage of 100 mV with 10.7% peak efficiency. The proposed ELV-CP and MS-DRV can boost the low input voltage of 56 mV.

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