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http://dx.doi.org/10.7471/ikeee.2015.19.4.573

Dual Mode Boost Converter for Energy Harvesting  

Park, Hyung-Ryul (Dept. of Electronics and Communication Engineering, Hanyang University)
Yeo, Jae-Jin (Dept. of Electronics and Communication Engineering, Hanyang University)
Roh, JeongJin (Dept. of Electronics and Communication Engineering, Hanyang University)
Publication Information
Journal of IKEEE / v.19, no.4, 2015 , pp. 573-582 More about this Journal
Abstract
This paper presents the design of dual mode boost converter for energy harvesting. The designed converter boosts low voltage from energy harvester through a startup circuit. When the voltage goes above predefined value, supplied voltage to startup circuit is blocked by voltage detector. Boost controller makes the boosted voltage into $V_{OUT}$. The proposed circuit consists of oscillator for charge pump, charge pump, pulse generator, voltage detector, and boost controller. The proposed converter is designed and fabricated using a $0.18{\mu}m$ CMOS process. The designed circuit shows that minimum input voltage is 600mV, output is 3V and startup time is 20ms. The boost converter achieves 47% efficiency at a load current of 3mA.
Keywords
charge pump for low input voltage; dual mode boost converter; energy harvesting; low input voltage; startup;
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