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

fYear

2011

fDate

3-6 Oct. 2011

Firstpage

1

Lastpage

2

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;

fLanguage

English

Publisher

ieee

Conference_Titel

SOI Conference (SOI), 2011 IEEE International

Conference_Location

Tempe, AZ

ISSN

1078-621X

Print_ISBN

978-1-61284-761-0

Electronic_ISBN

1078-621X

Type

conf

DOI

10.1109/SOI.2011.6081718

Filename

6081718