{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T18:11:17Z","timestamp":1773339077030,"version":"3.50.1"},"reference-count":20,"publisher":"MDPI AG","issue":"21","license":[{"start":{"date-parts":[[2024,10,24]],"date-time":"2024-10-24T00:00:00Z","timestamp":1729728000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Energies"],"abstract":"<jats:p>This research work aims to design and prototype a DC-DC converter to step up the low voltage of a small, low-power thermoelectric generator (TEG). The system is based on an inductive boost converter and attains a regulated output voltage of 1.2 V. The design\u2019s optimisation was based on simulation and experimental validation and it was implemented with only ten low-cost commercial off-the-shelf (COTS) components. To reduce complexity, the low-side switch MOSFET of the boost converter is directly driven by an LC oscillator, switching at 1.25 MHz. For loads above 20 k\u03a9, the converter ensures voltages higher than 1.2 V, supplied by the TEG voltage of 0.5 V, while registering identical efficiency values to those of more complex and expensive CMOS-integrated solutions. These designed features suggest applications in remote IoT nodes and portable devices, delivering sufficient power to backup the supply of corresponding sensing and communication low-power circuits, reducing the necessity of battery replacements or increasing their lifetime.<\/jats:p>","DOI":"10.3390\/en17215288","type":"journal-article","created":{"date-parts":[[2024,10,24]],"date-time":"2024-10-24T05:47:33Z","timestamp":1729748853000},"page":"5288","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Step-Up DC-DC Converter Supplied by a Thermoelectric Generator for IoT Applications"],"prefix":"10.3390","volume":"17","author":[{"given":"Jos\u00e9","family":"Almeida","sequence":"first","affiliation":[{"name":"Academia Militar\/CINAMIL, Av. Conde Castro Guimar\u00e3es, 2720-113 Amadora, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5310-6907","authenticated-orcid":false,"given":"P.","family":"Mendon\u00e7a dos Santos","sequence":"additional","affiliation":[{"name":"Academia Militar\/CINAMIL, Av. Conde Castro Guimar\u00e3es, 2720-113 Amadora, Portugal"},{"name":"Instituto de Telecomunica\u00e7\u00f5es, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5745-3439","authenticated-orcid":false,"given":"Jo\u00e3o","family":"Caldinhas Vaz","sequence":"additional","affiliation":[{"name":"Instituto de Telecomunica\u00e7\u00f5es, 1049-001 Lisbon, Portugal"},{"name":"Department of Electrical and Computer Engineering, Instituto Superior T\u00e9cnico, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4457-0924","authenticated-orcid":false,"given":"Ricardo A.","family":"Marques Lameirinhas","sequence":"additional","affiliation":[{"name":"Instituto de Telecomunica\u00e7\u00f5es, 1049-001 Lisbon, Portugal"},{"name":"Department of Electrical and Computer Engineering, Instituto Superior T\u00e9cnico, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7718-3808","authenticated-orcid":false,"given":"Catarina","family":"Pinho Correia Val\u00e9rio Bernardo","sequence":"additional","affiliation":[{"name":"Instituto de Telecomunica\u00e7\u00f5es, 1049-001 Lisbon, Portugal"},{"name":"Department of Electrical and Computer Engineering, Instituto Superior T\u00e9cnico, 1049-001 Lisbon, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1719-197X","authenticated-orcid":false,"given":"Jo\u00e3o Paulo N.","family":"Torres","sequence":"additional","affiliation":[{"name":"Instituto de Telecomunica\u00e7\u00f5es, 1049-001 Lisbon, Portugal"},{"name":"Department of Electrical and Computer Engineering, Instituto Superior T\u00e9cnico, 1049-001 Lisbon, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2024,10,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"114069","DOI":"10.1016\/j.apenergy.2019.114069","article-title":"Review of wearable thermoelectric energy harvesting: From body temperature to electronic systems","volume":"258","author":"Nozariasbmarz","year":"2020","journal-title":"Appl. Energy"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"42","DOI":"10.1016\/j.coelec.2020.03.008","article-title":"Wearable electrochemical sensors for noninvasive monitoring of health-a perspective","volume":"23","author":"Liu","year":"2020","journal-title":"Curr. Opin. Electrochem."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"2186","DOI":"10.12928\/telkomnika.v18i4.13072","article-title":"The usage of thermoelectric generator as a renewable energy source","volume":"18","author":"Cekdin","year":"2020","journal-title":"Telkomnika"},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2199","DOI":"10.1109\/JSSC.2012.2197239","article-title":"Platform architecture for solar, thermal, and vibration energy combining with MPPT and single inductor","volume":"47","author":"Bandyopadhyay","year":"2012","journal-title":"IEEE J. Solid-State Circuits"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"100258","DOI":"10.1016\/j.sintl.2023.100258","article-title":"A comprehensive review of energy harvesting and routing strategies for IoT sensors sustainability and communication technology","volume":"5","author":"Aldin","year":"2024","journal-title":"Sens. Int."},{"key":"ref_6","doi-asserted-by":"crossref","unstructured":"Tohidinejad, Z., Danyali, S., Valizadeh, M., Seepold, R., TaheriNejad, N., and Haghi, M. (2024). Designing a Hybrid Energy-Efficient Harvesting System for Head-or Wrist-Worn Healthcare Wearable Devices. Sensors, 24.","DOI":"10.20944\/preprints202403.1487.v1"},{"key":"ref_7","doi-asserted-by":"crossref","unstructured":"Romani, A., Camarda, A., Baldazzi, A., and Tartagni, M. (2015, January 22\u201324). A micropower energy harvesting circuit with piezoelectric transformer-based ultra-low voltage start-up. Proceedings of the 2015 IEEE\/ACM International Symposium on Low Power Electronics and Design (ISLPED), Rome, Italy.","DOI":"10.1109\/ISLPED.2015.7273527"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"6352","DOI":"10.1109\/TPEL.2024.3362366","article-title":"A Thermoelectric Energy Harvesting System Assisted by A Piezoelectric Transducer Achieving 10-mV Cold-Startup and 82.7% Peak Efficiency","volume":"39","author":"Lu","year":"2024","journal-title":"IEEE Trans. Power Electron."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"3055","DOI":"10.1109\/JSSC.2012.2225734","article-title":"A 40 mV transformer-reuse self-startup boost converter with MPPT control for thermoelectric energy harvesting","volume":"47","author":"Im","year":"2012","journal-title":"IEEE J. Solid-State Circuits"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"4888","DOI":"10.1109\/TCSI.2019.2935221","article-title":"A dual-stage boost converter using two-dimensional adaptive input-sampling MPPT for thermoelectric energy harvesting","volume":"66","author":"Chandrarathna","year":"2019","journal-title":"IEEE Trans. Circuits Syst. I Regul. Pap."},{"key":"ref_11","doi-asserted-by":"crossref","unstructured":"Kilani, D., Mohammad, B., and Alhawari, M. (2022). Switched inductor DC\u2013DC boost regulator using voltage-to-time controller for TEG applications. Energies, 15.","DOI":"10.3390\/en15093330"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"2719","DOI":"10.1109\/JSSC.2022.3152261","article-title":"A reconfigurable DC-DC converter for maximum thermoelectric energy harvesting in a battery-powered duty-cycling wireless sensor node","volume":"57","author":"Noh","year":"2022","journal-title":"IEEE J. Solid-State Circuits"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"2867","DOI":"10.1109\/JSSC.2019.2930911","article-title":"Integrated cold start of a boost converter at 57 mV using cross-coupled complementary charge pumps and ultra-low-voltage ring oscillator","volume":"54","author":"Bose","year":"2019","journal-title":"IEEE J. Solid-State Circuits"},{"key":"ref_14","first-page":"1379","article-title":"A 7.5-mV-Input Boost Converter for Thermal Energy Harvesting with 11-mV Self-Startup","volume":"67","author":"Radin","year":"2019","journal-title":"IEEE Trans. Circuits Syst. II Express Briefs"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"12957","DOI":"10.1109\/TIE.2021.3135613","article-title":"Self-operating flyback converter for boosting ultra-low voltage of thermoelectric power generator for IoT applications","volume":"69","author":"Patra","year":"2021","journal-title":"IEEE Trans. Ind. Electron."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"12457","DOI":"10.1109\/TIE.2023.3337530","article-title":"Low Voltage and Low Power Self-Startup Oscillator-Driven Boost Converter for Thermoelectric Generator Operating at Low Temperature","volume":"71","author":"Patra","year":"2024","journal-title":"IEEE Trans. Ind. Electron."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Patra, S., and Singh, A. (2024, January 2\u20134). Boost Converter Powered by Thermoelectric Generator to Harvest Low Temperature Waste Heat. Proceedings of the 2024 Second International Conference on Smart Technologies for Power and Renewable Energy (SPECon), Ernakulam, India.","DOI":"10.1109\/SPECon61254.2024.10537331"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"38920","DOI":"10.1109\/ACCESS.2020.2975424","article-title":"Software controlled low cost thermoelectric energy harvester for ultra-low power wireless sensor nodes","volume":"8","author":"Markiewicz","year":"2020","journal-title":"IEEE Access"},{"key":"ref_19","first-page":"889","article-title":"A batteryless single-inductor boost converter with 190 mV self-startup voltage for thermal energy harvesting over a wide temperature range","volume":"66","author":"Chen","year":"2018","journal-title":"IEEE Trans. Circuits Syst. II Express Briefs"},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"dos Santos, P.M., Serralheiro, A.J., Borges, B., Torres, J.P.N., and Charas, A. (2022). An Experimental Study on Step-Up DC\u2013DC Converters for Organic Photovoltaic Cells. J. Low Power Electron. Appl., 12.","DOI":"10.3390\/jlpea12020020"}],"container-title":["Energies"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1996-1073\/17\/21\/5288\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T16:19:30Z","timestamp":1760113170000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1996-1073\/17\/21\/5288"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,10,24]]},"references-count":20,"journal-issue":{"issue":"21","published-online":{"date-parts":[[2024,11]]}},"alternative-id":["en17215288"],"URL":"https:\/\/doi.org\/10.3390\/en17215288","relation":{},"ISSN":["1996-1073"],"issn-type":[{"value":"1996-1073","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,10,24]]}}}