{"title":"Fully integrated start-up at 70 mV of boost converters for thermoelectric energy harvesting","authors":"Jacob Göppert, Y. Manoli","doi":"10.1109/ESSCIRC.2015.7313870","DOIUrl":null,"url":null,"abstract":"This paper presents an inductive DC-DC boost converter for energy harvesting using a thermoelectric generator with a minimum start-up voltage of 70 mV and a regulated output voltage of 1.25 V. With a typical generator resistance of 40 Ω an output power of 17μW can be provided, which translates to an end-to-end efficiency of 58%. The converter employs Schmitt-Trigger logic start-up control circuitry and an ultra-low voltage charge pump using modified Schmitt-Trigger driving circuits optimized for driving capacitive loads. Together with a novel ultra-low leakage power switch and the required control scheme, this enables, to the authors knowledge, the lowest minimum voltage with fully integrated start-up.","PeriodicalId":11845,"journal":{"name":"ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC)","volume":"84 1","pages":"233-236"},"PeriodicalIF":0.0000,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"17","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ESSCIRC Conference 2015 - 41st European Solid-State Circuits Conference (ESSCIRC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ESSCIRC.2015.7313870","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 17
Abstract
This paper presents an inductive DC-DC boost converter for energy harvesting using a thermoelectric generator with a minimum start-up voltage of 70 mV and a regulated output voltage of 1.25 V. With a typical generator resistance of 40 Ω an output power of 17μW can be provided, which translates to an end-to-end efficiency of 58%. The converter employs Schmitt-Trigger logic start-up control circuitry and an ultra-low voltage charge pump using modified Schmitt-Trigger driving circuits optimized for driving capacitive loads. Together with a novel ultra-low leakage power switch and the required control scheme, this enables, to the authors knowledge, the lowest minimum voltage with fully integrated start-up.