Title :
Converter and controller for micro-power energy harvesting
Author :
Xu, Shengwen ; Ngo, Khai D T ; Nishida, Toshikazu ; Chung, Gyo-Bum ; Sharma, Attma
Author_Institution :
Dept. of Electr. & Comput. Eng., Florida Univ., Gainesville, FL
Abstract :
A pulsed-resonant ac-dc converter and an integrated-circuit (IC) controller have been designed, fabricated, and tested for harvesting energy from low-voltage (1.2 V), low-power (1-100 muW) energy transducers with output frequency in the 10 Hz-1 kHz range. Simulations using foundry models suggest that the silicon loss could be as low as 0.6 muW, and the efficiency could reach 70%. With the IC experimentally packaged, the measured efficiency is between 50% and 70%, depending on the size and the loss in the resonant inductor
Keywords :
AC-DC power convertors; control system synthesis; integrated circuits; micromechanical devices; piezoelectric transducers; resonant power convertors; 1 to 100 muW; 1.2 V; 10 Hz to 1 kHz; 50 to 70 percent; IC controller; energy transducer; integrated-circuit controller; micropower energy harvesting; output frequency; pulsed-resonant ac-dc converter; resonant inductor; AC-DC power converters; Foundries; Frequency conversion; Integrated circuit packaging; Integrated circuit testing; Loss measurement; Resonance; Silicon; Size measurement; Transducers;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-8975-1
DOI :
10.1109/APEC.2005.1452924
