可重构的能量收集电路及DC-DC转换器  

Reconfigurable energy collection circuit and DC-DC converter

作　　者：张京 张章 王桉楠 任洪涛 ZHANG Jing;ZHANG Zhang;WANG Annan;REN Hongtao(School of Microelectronics,Hefei University of Technology,Hefei 230601,China)

机构地区：[1]合肥工业大学微电子学院,安徽合肥230601

出　　处：《合肥工业大学学报（自然科学版）》2024年第9期1191-1195,1223,共6页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金区域创新发展联合基金资助项目(U19A2053);中央高校基本科研业务费专项资金资助项目(PA2021KCPY0043)。

摘　　要：为了进一步提高输出电压的稳定性以及能量收集电路的转换效率,文章在传统的单能量收集系统上,增加电池辅助系统以提高输出的稳定性;通过单迟滞比较器判断升降压电路的工作状态,并通过时序控制完成升降压电路单电感的分配问题。该方法通过增加电池辅助的降压电路提高输出电压的稳定性以及能量转换效率;利用时序控制电路实现升降压电路的单电感共用,改善传统升降压电路双电感面积大的问题。电路基于CMOS 180 nm工艺进行设计,仿真结果表明:在输出负载电流发生突变时,输出电压波动小于10 mV;在不同的输出负载条件下,环境能量追踪效率在97%以上、转换效率在78%以上。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 collection 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 environmental energy is more than 78%.

关 键 词：工作模式可重构 单电感共用 稳定性 转换效率 能量收集 

分 类 号：TN432[电子电信—微电子学与固体电子学]