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

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 <br/>oscillator has been implemented. The ring oscillator is followed by 40 charge-pump stages, an ultra...