Paper Info
Title
A 580 Nw Dual-Input Energy Harvester Ic Using Multi-Task Mppt And A Current Boost Converter For Heterogeneous Source Combining
Abstract
Herein, we present a multi-energy harvesting interface integrated circuit (IC) that enables the efficient combination of heterogeneous power sources. An electromagnetic vibration energy generator (EVG) and a thermoelectric energy generator (TEG) are the two energy sources, which have quite different internal resistance (tens and kilo-Ohms). To solve the challenge of combining heterogeneous sources, we propose a current boost converter (CBC), which achieves the resistance transformation as well as the source type conversion. The challenge of realizing maximum power point tracking (MPPT) for each source is tackled by using a multi-task MPPT controller, which is efficiently shared between the two sources. To achieve energy harvesting under uncertain and random source conditions, we propose an input (VIN)-dependent clock generator (VCG) and a vibration pulse detector (VPD). The VCG tracks the change of source conditions to generate the clock for the MPPT controller. The VPD allows tracking of the random amplitude and frequency changes of the EVG. The energy harvester is fabricated in a 0.18 mu m process with a thick top-metal option. Measured results show successful source detection, switching, andMPPT operation. The proposed IC provides an output power of up to 119 mu W with an end-to-end peak efficiency of 82% by consuming 582 nW.
Year
DOI
Venue
2020
10.1109/TCSI.2020.3015989
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
Keywords
DocType
Volume
Generators, Integrated circuits, Resistance, Switches, Vibrations, Frequency conversion, Energy harvesting, Boost converter, maximum power tracking, thermoelectric generator, energy harvesting, boost converter, electromagnetic vibration energy generator
Journal
67
Issue
ISSN
Citations 
12
1549-8328
0
PageRank 
References 
Authors
0.34
0
2
Name
Order
Citations
PageRank
Seneke Chamith Chandrarathna131.10
Jong-Wook Lee26611.45