Title :
Ultra-high-efficiency co-integrated photovoltaic energy scavenger
Author :
Gosset, Geoffroy ; Bulteel, Olivier ; Baijot, Pierre ; Flandre, Denis
Author_Institution :
ICTEAM Inst., Univ. Catholique de Louvain (UCL), Louvain-la-Neuve, Belgium
Abstract :
In this paper, we present a SOI CMOS Ultra-Low-Power (ULP) three-stage charge pump designed to interface photovoltaic (PV) cells co-integrated in the SOI substrate and used as a DC power source. Under an irradiance of 100W/m2, 2 PV cells in series provide a 815mV open-circuit voltage and a 21μA short-circuit current. Indoor measurements have been realized connecting them to one charge pump and the obtained output voltages of both the solar cells and charge pump vs. load are discussed. Improvements and perspectives are provided for an irradiance of 500W/m2. Co-integration is realized on a 2μm multiple-threshold voltage SOI CMOS technology for ULP applications.
Keywords :
CMOS integrated circuits; charge pump circuits; energy harvesting; low-power electronics; short-circuit currents; silicon-on-insulator; solar cells; DC power source; PV cells; SOI CMOS ultra-low-power three-stage charge pump; current 21 muA; indoor measurements; multiple-threshold voltage SOI CMOS technology; photovoltaic cells; short-circuit current; size 2 mum; solar cells; ultra-high-efficiency co-integrated photovoltaic energy scavenger; voltage 815 mV; CMOS integrated circuits; Charge pumps; Clocks; Current measurement; Integrated circuit modeling; Photovoltaic cells; Voltage measurement;
Conference_Titel :
SOI Conference (SOI), 2011 IEEE International
Conference_Location :
Tempe, AZ
Print_ISBN :
978-1-61284-761-0
Electronic_ISBN :
1078-621X
DOI :
10.1109/SOI.2011.6081718
