에너지 하베스팅을 위한 이중 모드 부스트 컨버터

초록

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 VOUT. 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㎛ CMOS process. The designed circuit shows that minimum input voltage is 600㎷, output is 3V and startup time is 20㎳. The boost converter achieves 47% efficiency at a load current of 3㎃.

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