A Self-Powered Piezoelectric Energy Harvesting Circuit With an Optimal Flipping Time SSHI and Maximum Power Point Tracking

This brief presents an ultra low power IC design for piezoelectric (PE) energy harvesting, which integrates a maximum power point tracking (MPPT) circuit and a synchronized switch harvesting on inductor (SSHI) circuit. The proposed circuit also has three different operation modes to extend the range...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2019-10, Vol.66 (10), p.1758-1762
Main Authors: Wu, Liao, Ha, Dong Sam
Format: Article
Language:English
Subjects:
Batteries
Capacitors
Circuit design
CMOS
Electric potential
Energy harvesting
FOCV
Maximum power point trackers
Maximum power tracking
MPPT
piezoelectric energy harvesting
Piezoelectricity
SSHI
Switches
Transducers
Vibration energy harvesting
Voltage
Voltage measurement
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Summary:This brief presents an ultra low power IC design for piezoelectric (PE) energy harvesting, which integrates a maximum power point tracking (MPPT) circuit and a synchronized switch harvesting on inductor (SSHI) circuit. The proposed circuit also has three different operation modes to extend the range of the harvestable power level generated by a PE transducer. The circuit is designed in CMOS and fabricated in BiCMOS 0.25 μm technology with the die size of 2 mm 2 . The measurement results indicate the circuit can harvest energy with the input power ranging from 10 to 34 μW during MPPT. It achieves peak efficiency of 77% under a PE cantilever voltage of 3.5 V and the battery voltage of 4.2 V.
ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2019.2924963