The Dickson Charge Pump as Voltage Booster for Light Energy Harvesting on CMOS Vision Chips
The photodiode structures on a vision chip can be configured in either imaging (IM) or energy harvesting (EHM) mode. The upper voltage achieved with on-chip energy harvesting is below 0.5 V on standard CMOS technologies, thus DC/DC converters are needed to reach the power supply of today CMOS technologies. This paper addresses the design of a Dickson charge pump to this purpose on a standard 0.18 μm CMOS technology. The paper provides data on how the photoconversion characteristics of the photodiodes change, as well as on how the performance metrics of a CMOS vision chip are affected when the energy harvested in EHM is used as power supply in IM.
keywords: Energy harvesting, CMOS standard technology, CMOS imagers, DC/DC converter, Dickson converter
Publication: Congress
1624015027385
June 18, 2021
/research/publications/the-dickson-charge-pump-as-voltage-booster-for-light-energy-harvesting-on-cmos-vision-chips
The photodiode structures on a vision chip can be configured in either imaging (IM) or energy harvesting (EHM) mode. The upper voltage achieved with on-chip energy harvesting is below 0.5 V on standard CMOS technologies, thus DC/DC converters are needed to reach the power supply of today CMOS technologies. This paper addresses the design of a Dickson charge pump to this purpose on a standard 0.18 μm CMOS technology. The paper provides data on how the photoconversion characteristics of the photodiodes change, as well as on how the performance metrics of a CMOS vision chip are affected when the energy harvested in EHM is used as power supply in IM. - E. Ferro, J. Illade-Quinteiro, V.M. Brea, P. López, D. Cabello, G. Doménech-Asensi - 10.1109/CNNA.2014.6888602
publications_en