An Integrated Circuit of A Cold Start-up Circuit for A Thermoelectric Energy Harvesting System.
ISCAS(2023)
摘要
A cold start-up circuit for thermoelectric energy harvesting systems is presented in this paper. The proposed cold start-up circuit shares the energy harvesting inductor and load capacitor with the main boost converter, so no extra off-chip components are required, resulting in a small form factor. The start-up circuit comprises a stacked ring oscillator, a pair of low-voltage charge pumps, a low-power voltage detector, a reset switch, and two power switches. A prototyped chip for concept proving is designed and fabricated in a 0.18 mu m CMOS process. The measured waveforms demonstrate that the prototyped cold start-up chip can boost an input voltage of 300mV up to 1V within 950ms when the loading capacitance is 0.1 mu F.
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关键词
energy harvesting, cold start-up circuit, thermoelectric converter, voltage detector, boost converter
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