Analysis and design strategy of on-chip charge pumps for micro-power energy harvesting applications

doi:10.1007/978-3-642-32770-4_10

Status	已發表Published
	Analysis and design strategy of on-chip charge pumps for micro-power energy harvesting applications
	Ki W.-H.2; Lu Y.2; Su F.1; Tsui C.-Y.2
	2012-12-12
Source Publication	IFIP Advances in Information and Communication Technology
Volume	379 AICT
Pages	158-186
Abstract	Charge balance law based on conservation of charge is stated and employed to analyze on-chip linear, Fibonacci and exponential charge pumps. For micro-power on-chip implementations, both the positive- and the negative-plate parasitic capacitors have to be considered. Voltage conversion ratios and efficiencies can be obtained in closed form for single- and dual-branch linear charge pumps, but not for Fibonacci and exponential charge pumps. Instead, a first iteration approximation analysis for computing voltage conversion ratio is proposed. For the linear charge pump, efficiency optimization is achieved by first computing the optimal number of stages, and then obtaining from the required output voltage the reduction factor that is a function of load current, flying capacitor and switching frequency. Using a 0.35μm CMOS process, 8X linear, Fibonacci and exponential charge pumps are designed and their performances are compared and confirmed by extensive Cadence Spectre simulations. It is concluded that linear charge pumps attain the best efficiency. © 2012 IFIP International Federation for Information Processing.
Keyword	charge balance charge pump charge redistribution exponential charge pump Fibonacci charge pump linear charge pump
DOI	10.1007/978-3-642-32770-4_10
URL	View the original
Language	英語English
Fulltext Access	View Full-Text via DOI View Full-Text via Scopus
Citation statistics
Document Type	Conference paper
Collection	University of Macau
Affiliation	1.Broadcom Limited, San Jose 2.Hong Kong University of Science and Technology
Recommended Citation GB/T 7714	Ki W.-H.,Lu Y.,Su F.,et al. Analysis and design strategy of on-chip charge pumps for micro-power energy harvesting applications[C], 2012, 158-186.
APA	Ki W.-H.., Lu Y.., Su F.., & Tsui C.-Y. (2012). Analysis and design strategy of on-chip charge pumps for micro-power energy harvesting applications. IFIP Advances in Information and Communication Technology, 379 AICT, 158-186.

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