Charge Pump Improvement for Energy Harvesting Applications by Node Pre-Charging
Charge Pump Improvement for Energy Harvesting Applications by Node Pre-Charging
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DOI：
10.1109/tcsii.2020.2991241
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发表时间：
2020-12-01
影响因子：
4.4
通讯作者：
Palumbo, Gaetano
中科院分区：
文献类型：
--
作者：
Ballo, Andrea;Grasso, Alfio Dario;Palumbo, Gaetano
本简报提出了一种简单但有效的策略来改善能量自主系统的唤醒操作，该系统利用电荷泵（CP）电路直接从能量收集器发电机升高电压。通过很少的辅助二极管和寄生结，当收集电源不能为系统供电时，CP被管理为将电荷保留在泵浦电容器中，从而减少了启动阶段期间的上升时间和输入能量需求。使用65 nm CMOS工艺的仿真结果证实了所提出的策略的潜力，并显示了减少的上升时间和输入能量高于20%的传统拓扑结构相比。
This brief proposes a simple but effective strategy to improve wake-up operation in energy-autonomous systems which exploits Charge Pump (CP) circuits to boost voltage directly from energy harvester generators. By means of few auxiliary diodes and parasitic junctions, the CP is managed to retain the charges in the pumping capacitors when the harvesting power source is not able to feed the system, thereby reducing the rise time and input energy demand during the start-up phase. Simulation results using a 65-nm CMOS technology confirm the potentialities of the proposed strategy and show a reduction of the rise time and the input energy higher than 20% as compared with the traditional topology.