Title :
A single-inductor AC-DC piezoelectric energy-harvester/battery-charger IC converting ±(0.35 to 1.2V) to (2.7 to 4.5V)
Author :
Dongwon Kwon ; Rincon-Mora, Gabriel A.
Author_Institution :
Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
Energy harvesting in microscale devices is important (because space constrains energy) and challenging (because rectifying small ac piezoelectric signals is lossy and difficult). The 1 mm2 2 ¿m BiCMOS piezoelectric energy harvester-charger IC presented harnesses up to 30 ¿W from a PZT transducer´s ±0.35-to-1.2 V levels to charge 1.2-to-1.5 mAh Li Ions with 46-to-81% efficiency.
Keywords :
AC-DC power convertors; BiCMOS integrated circuits; battery chargers; energy harvesting; piezoelectric transducers; power inductors; BiCMOS piezoelectric energy harvester-charger IC; battery-charger IC; microscale device; single-inductor AC-DC piezoelectric energy-harvester; size 2 micron; Batteries; Damping; Delay; Hysteresis; Inductors; Rectifiers; Switches; Transducers; Vibrations; Voltage;
Conference_Titel :
Solid-State Circuits Conference Digest of Technical Papers (ISSCC), 2010 IEEE International
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-4244-6033-5
DOI :
10.1109/ISSCC.2010.5433867
