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5uW-10mW input power range inductive boost converter for indoor photovoltaic energy harvesting with integrated maximum power point tracking algorithm

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These file attachments have been under embargo and were made available to the public after the embargo was lifted on 7 March 2011.

Author: Qiu, Y. · Van Liempd, C. · Op het Veld, J.H.G. · Blanken, P.G. · Van Hoof, C.
Type:Conference paper
Date:2010-10-20
Embargo lifted:2011-03-07
Publisher: IEEE
Institution: Philips Research
Source:ISSCC 2011; IEEE Int. Solid-State Circuits Conf. (San Francisco, CA)
Identifier: MS-31.868
Keywords: inductive power converter · maximum power point tracking · photo voltaic · ultra low power
Rights: (c) 2010 IEEE

Abstract

A fully autonomous inductive boost converter for indoor photovoltaic harvesting with maximum power point tracking circuit is implemented in a commercial 0.25um CMOS process. The converter can handle input power from 5uW up to 10mW and charge a battery or a super-capacitor up to 5V. Its control circuit consumes between 0.8uA and 2.1uA depending on the input power level, resulting in a peak end-to-end efficiency of 70% when tracking a maximum input power of 17uW.

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