Title
20.10 A 50nW-to-10mW output power tri-mode digital buck converter with self-tracking zero current detection for photovoltaic energy harvesting
Abstract
Photovoltaic energy harvesting is an attractive method of developing battery-free systems for wireless sensors, biomedicai electronics, and the internet of things (IoT). To obtain an energy-efficient system, low-power digital circuits operating in the near/sub-threshold region are widely used in such applications. Therefore, the design of a low-voltage buck converter, which converts the harvested energy to the regulated output is critical. Sub-1V buck converters have been implemented using a large inductor [1] to operate in a continuous conduction mode (CCM). Both CCM and discontinuous conduction mode (DCM) operation has been demonstrated in [2], using an analog zero current detection (ZCD) technique to extend the available output power range. However, the analog circuit limits the minimum output power to 50μW, and reduces the conversion efficiency under light load conditions.
Year
DOI
Venue
2015
10.1109/ISSCC.2015.7063083
J. Solid-State Circuits
Keywords
Field
DocType
photovoltaic power systems,energy-efficient system,power convertors,low-power digital circuits,low-voltage buck converter,ccm,self-tracking zero current detection,analog zero current detection,power 50 nw to 10 mw,discontinuous conduction mode,continuous conduction mode,zcd technique,energy harvesting,dcm,tri-mode digital buck converter,battery-free systems,photovoltaic energy harvesting,light load conditions,logic gates,inductors,cmos integrated circuits,pulse width modulation,system on chip,power transistors,power generation
Energy conversion efficiency,Computer science,Power semiconductor device,Pulse-width modulation,Energy harvesting,Inductor,Electronic engineering,CMOS,Electronics,Buck converter,Electrical engineering
Conference
Volume
Issue
Citations 
51
2
10
PageRank 
References 
Authors
0.98
3
3
Name
Order
Citations
PageRank
Po-Hung Chen16511.24
Chung-Shiang Wu2122.04
Kai-Chun Lin3111.32