Design and analysis of on-chip charge pumps for micro-power energy harvesting applications

Author

Ki, Wing-Hung ; Lu, Yan ; Su, Feng ; Tsui, Chi-ying

Author_Institution

Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong, China

fYear

2011

fDate

3-5 Oct. 2011

Firstpage

374

Lastpage

379

Abstract

Charge balance law based on conservation of charge is stated and employed to analyze charge pumps. For micro-power on-chip implementations, both the positive-plate and the negative-plate parasitic capacitors have to be considered. A first iteration approximation analysis is proposed to analyze charge pumps with parasitic capacitors. Using a 0.35μm CMOS process, 8X linear, Fibonacci and exponential charge pumps are designed and their performances are compared and confirmed by simulations.

Keywords

CMOS integrated circuits; approximation theory; capacitors; charge pump circuits; energy harvesting; CMOS process; charge balance law; exponential charge pumps; first iteration approximation analysis; micropower energy harvesting applications; micropower on-chip implementations; negative-plate parasitic capacitors; on-chip charge pumps; positive-plate parasitic capacitors; size 0.35 mum; Approximation methods; Capacitance; Capacitors; Charge pumps; Charge transfer; System-on-a-chip; Topology; charge balance; charge balance law; charge pump; charge redistribution; charge redistribution loss; on-chip charge pump;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI and System-on-Chip (VLSI-SoC), 2011 IEEE/IFIP 19th International Conference on

Conference_Location

Hong Kong

Print_ISBN

978-1-4577-0171-9

Electronic_ISBN

978-1-4577-0169-6

Type

conf

DOI

10.1109/VLSISoC.2011.6081612

Filename

6081612