A 60 mV Input Voltage, Process Tolerant Start-Up System for Thermoelectric Energy Harvesting

Mohammadjavad Dezyani; Hassan Ghafoorifard; Samad Sheikhaei; Wouter A. Serdijn

doi:10.1109/TCSI.2018.2834312

A 60 mV Input Voltage, Process Tolerant Start-Up System for Thermoelectric Energy Harvesting

Mohammadjavad Dezyani, Hassan Ghafoorifard, Samad Sheikhaei, Wouter A. Serdijn

Bio-Electronics

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Abstract

This paper presents a 60 mV input voltage start-up system for thermoelectric energy harvesting. A new process tolerant inverter cell is proposed, which is functional at supply voltages as low as 60 mV. Using the proposed unit cell, a ring
oscillator has been implemented. The ring oscillator is followed by 40 charge-pump stages, an ultra-low-power level detector, and a boost converter. The energy harvesting system can generate an output voltage of 1 V and delivers a maximum power of 4.5 μW from a 60 mV supply. This system has been implemented in a standard 0.18 μm CMOS technology, uses neither zerothreshold voltage (normally-on) negative-channel metal-oxide semiconductor nor microelectromechanical systems switches and occupies 3.3 mm2.

Original language	English
Pages (from-to)	3568-3577
Number of pages	10
Journal	IEEE Transactions on Circuits and Systems I: Regular Papers
Volume	65
Issue number	10
DOIs	https://doi.org/10.1109/TCSI.2018.2834312
Publication status	Published - 2018

Bibliographical note

Accepted author manuscript

Keywords

CMOS
Energy harvesting
low power design
low voltage
TEG
thermoelectric generator

Access to Document

10.1109/TCSI.2018.2834312

FINAL_VERSIONAccepted author manuscript, 390 KB

Cite this

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AU - Serdijn, Wouter A.

N1 - Accepted author manuscript

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AB - This paper presents a 60 mV input voltage start-up system for thermoelectric energy harvesting. A new process tolerant inverter cell is proposed, which is functional at supply voltages as low as 60 mV. Using the proposed unit cell, a ring oscillator has been implemented. The ring oscillator is followed by 40 charge-pump stages, an ultra-low-power level detector, and a boost converter. The energy harvesting system can generate an output voltage of 1 V and delivers a maximum power of 4.5 μW from a 60 mV supply. This system has been implemented in a standard 0.18 μm CMOS technology, uses neither zerothreshold voltage (normally-on) negative-channel metal-oxide semiconductor nor microelectromechanical systems switches and occupies 3.3 mm2.

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A 60 mV Input Voltage, Process Tolerant Start-Up System for Thermoelectric Energy Harvesting

Abstract

Bibliographical note

Keywords

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