Title :
The dickson charge pump as voltage booster for light energy harvesting on CMOS vision chips
Author :
Ferro, Edgardo ; Illade-Quinteiro, J. ; Brea, V.M. ; LoÌpez, P. ; Cabello, D. ; DomeÌnech-Asensi, G.
Author_Institution :
Centro de Investig. en Tecnoloxias da Informacion, Univ. of Santiago de Compostela, Santiago de Compostela, Spain
Abstract :
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 :
CMOS image sensors; charge pump circuits; energy harvesting; integrated circuit design; photodiodes; CMOS vision chips; DC-DC converters; Dickson charge pump; EHM; IM; light energy harvesting; on-chip energy harvesting; photoconversion characteristics; photodiode structures; power supply; size 0.18 mum; standard CMOS technology; voltage booster; CMOS integrated circuits; CMOS technology; Capacitance; Capacitors; Charge pumps; Energy harvesting; Photodiodes;
Conference_Titel :
Cellular Nanoscale Networks and their Applications (CNNA), 2014 14th International Workshop on
Conference_Location :
Notre Dame, IN
DOI :
10.1109/CNNA.2014.6888602
