Review Article Open Access

Review of Charge Pump Topologies for Micro Energy Harvesting Systems

Michelle Lim Sern Mi1, Md. Shabiul Islam1, Jahariah Sampe1 and Sawal Hamid Md. Ali2
  • 1 Institute of Microengineering and Nanoelectronics (IMEN), UKM, 43600 Bangi, Selangor, Malaysia
  • 2 Department of Electrical, Electronics and System Engineering, UKM, 43600 Bangi, Selangor, Malaysia

Abstract

This paper reviews CMOS based charge pump topologies used within autonomous embedded micro-systems. These charge pump structures have evolved from its simplistic diode-tied, single-branches with major threshold drops to exponential type, dual-branches with sophisticated gate and substrate control for lower voltage operation. Published charge pumps are grouped based on architecture, operation principles and pump optimization techniques with their pros and cons compared and results contrasted. The various charge pump topologies and schemes used are considered based on pumping efficiency, power efficiency, charge transferability, circuit complexity, pumping capacitors, form factor and minimum supply voltages with an optimum load. This article concludes with an overview of suitable techniques and recommendations that will aid a designer in selecting the most suitable charge pump topology especially for low ambient micro energy harvesting applications.

American Journal of Applied Sciences
Volume 13 No. 5, 2016, 628-645

DOI: https://doi.org/10.3844/ajassp.2016.628.645

Submitted On: 29 April 2016 Published On: 26 May 2016

How to Cite: Sern Mi, M. L., Islam, M. S., Sampe, J. & Md. Ali, S. H. (2016). Review of Charge Pump Topologies for Micro Energy Harvesting Systems. American Journal of Applied Sciences, 13(5), 628-645. https://doi.org/10.3844/ajassp.2016.628.645

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Keywords

  • Charge Pump (CP)
  • Low Voltage (LV)
  • Energy Harvesting