Boost Converter With Dynamic Input Impedance Matching for Energy Harvesting With Multi-Array Thermoelectric Generators Academic Article uri icon

abstract

  • This paper presents a built-in input matching technique capable of handling a wide variation of multi-array thermoelectric generator (TEG) impedances ranging two decades, from 10 s to 1000 s of ohms. Maximum power point tracking (MPPT) control for a boost converter (BC) is introduced. The analytical expressions derived offer insight on the manner in which MPPT interacts with a BC to achieve best performance. The BC operates in a discontinuous conduction mode under pulse frequency modulation to minimize power consumption and maximize efficiency for light loads. Losses are minimized by implementing a pseudo-zero current switching control via the PMOS switch on/off time, and the output voltage is set using a global clocked comparator. A prototype was fabricated in 0.5 μm CMOS where efficiency measurements showed a maximum value of 61.15% for an RTEG = 33.33 Ω, and quiescent power consumption was 1 μW. © 1982-2012 IEEE.

altmetric score

  • 3

author list (cited authors)

  • Carreon-Bautista, S., Eladawy, A., Mohieldin, A. N., & Snchez-Sinencio, E.

citation count

  • 82

publication date

  • January 2014