Title :
Piezoelectric power generation interface circuits
Author :
Le, Triet ; Han, Jifeng ; Von Jouanne, Annette ; Mayararn, K. ; Fiez, Tem S.
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
Abstract :
New power conversion circuits are presented that interface to a piezoelectric power generator. Measured results are presented for a synchronous rectifier with voltage doubler connected to the piezoelectric membrane. The power efficiency is 88% and the output power is 2.5 μW with a 100 kΩ, 100 nF load. An improved circuit based on the synchronous rectifier achieves 1.4 V, 20 μW and more than 90% efficiency.
Keywords :
piezoelectric devices; power conversion; rectifying circuits; voltage multipliers; 1.4 V; 100 kohm; 100 nF; 2.5 muW; 20 muW; 88 percent; 90 percent; piezoelectric membrane generator; piezoelectric power generation; power conversion circuits; power efficiency; power generation interface circuits; power generator; synchronous rectifier; voltage doubler; Biomembranes; Circuits; Frequency; Impedance; Mechanical energy; Piezoelectric materials; Power conversion; Power generation; Rectifiers; Voltage;
Conference_Titel :
Custom Integrated Circuits Conference, 2003. Proceedings of the IEEE 2003
Print_ISBN :
0-7803-7842-3
DOI :
10.1109/CICC.2003.1249447
