Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI | http://purl.tuc.gr/dl/dias/101CBC08-1E21-4155-B122-27FF8B2BABD3 | - |
| Identifier | https://doi.org/10.3390/electronics10172097 | - |
| Identifier | https://www.mdpi.com/2079-9292/10/17/2097/htm | - |
| Language | en | - |
| Extent | 14 pages | en |
| Title | An ultra-low-power CMOS supercapacitor storage unit for energy harvesting applications | en |
| Creator | Gogolou Vasiliki | en |
| Creator | Kozalakis Konstantinos | en |
| Creator | Koutroulis Eftychios | en |
| Creator | Κουτρουλης Ευτυχιος | el |
| Creator | Doumenis Gregory | en |
| Creator | Siskos Stylianos | en |
| Publisher | MDPI | en |
| Content Summary | This work presents an ultra-low-power CMOS supercapacitor storage unit suitable for a plethora of low-power autonomous applications. The proposed unit exploits the unregulated voltage output of harvesting circuits (i.e., DC-DC converters) and redirects the power to the storage elements and the working loads. Being able to adapt to the input energy conditions and the connected loads’ supply demands offers extended survival to the system with the self-startup operation and voltage regulation. A low-complexity control unit is implemented which is composed of power switches, comparators and logic gates and is able to supervise two supercapacitors, a small and a larger one, as well as a backup battery. Two separate power outputs are offered for external load connection which can be controlled by a separate unit (e.g., microcontroller). Furthermore, user-controlled parameters such as charging and discharging supercapacitor voltage thresholds, provide increased versatility to the system. The storage unit was designed and fabricated in a 0.18 um standard CMOS process and operates with ultra-low current consumption of 432 nA at 2.3 V. The experimental results validate the proper operation of the overall structure. | en |
| Type of Item | Peer-Reviewed Journal Publication | en |
| Type of Item | Δημοσίευση σε Περιοδικό με Κριτές | el |
| License | http://creativecommons.org/licenses/by/4.0/ | en |
| Date of Item | 2022-10-06 | - |
| Date of Publication | 2021 | - |
| Subject | Energy harvesting | en |
| Subject | On-chip integration | en |
| Subject | Power management | en |
| Subject | Supercapacitor | en |
| Subject | Storage unit | en |
| Bibliographic Citation | V. Gogolou, K. Kozalakis, E. Koutroulis, G. Doumenis, and S. Siskos, “An ultra-low-power CMOS supercapacitor storage unit for energy harvesting applications,” Electronics, vol. 10, no. 17, Aug. 2021, doi: 10.3390/electronics10172097. | en |
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