Reconfigurable energy collection circuit and DC-DC converter
In order to further improve the stability of the output voltage and the conversion efficiency of the energy collection circuit,a battery auxiliary system is added to the traditional single energy collec-tion system to improve the stability of the output.The single hysteresis comparator is used to judge the working state of the step-down circuit,and the assignment of single inductance of the step-down circuit is accomplished through timing control.In this method,the stability of output voltage and the energy conversion efficiency are improved by adding battery-assisted step-down circuit,and the single inductor sharing of the step-down circuit is realized through timing control circuit.The problem of large double inductor area of the traditional step-down circuit is solved.This circuit is designed based on the CMOS 180 nm process.The simulation results show that the output voltage fluctuation is less than 10 mV when the output load current changes abruptly.Under different output load conditions,the tracking efficiency of environmental energy is more than 97％,and the conversion efficiency of en-vironmental energy is more than 78％.
work mode reconfigurablesingle inductor sharingstabilityconversion efficiencyenergy collection
万方数据
维普
