Publication Type : Conference Paper
Publisher : IEEE International Symposium on Smart Electronic Systems (iSES) (Formerly iNiS)
Source : IEEE International Symposium on Smart Electronic Systems (iSES) (Formerly iNiS), Rourkela, India, Dec. 2019.
Url : https://ieeexplore.ieee.org/document/9002610
Campus : Coimbatore
School : School of Engineering
Department : Electronics and Communication
Year : 2019
Abstract : An Ultra-low power solar energy harvesting system (EHS) for IoT end node devices is presented in this paper. To provide an uninterrupted power supply to IoT nodes is a challenge. The solar cell is used as an input source and this low input voltage is boosted by using the DC-DC converter. The charge pump is used as a voltage booster and the impedance matching between the solar cell and the converter is achieved through frequency tuning and capacitor value modulation. A hill-climbing technique is used for maximum power point (MPP) achievement. The EHS designed is self-sustainable and the output is in the range of 3-3.55 V with an input of 1-1.5 V. The EHS is designed in CMOS 90 nm technology library. The simulation results validate the proposed concept and the EHS is consuming a power of 22 μW, which is within the Ultra-low power range of IoT smart nodes.
Cite this Research Publication : S. K. Ram, B. B. Das, A. K. Swain, and K.K. Mahapatra, “Ultra-Low Power Solar Energy Harvester for IoT Edge Node Devices," IEEE International Symposium on Smart Electronic Systems (iSES) (Formerly iNiS), Rourkela, India, Dec. 2019.