An Interface Circuit for Low-Voltage Low-Current Energy Harvesting Systems

2015 ◽  
Vol 30 (3) ◽  
pp. 1411-1420 ◽  
Author(s):  
Enrico Dallago ◽  
Alessandro Lazzarini Barnabei ◽  
Alessandro Liberale ◽  
Piero Malcovati ◽  
Giuseppe Venchi
Keyword(s):  
Energy Harvesting ◽  
Low Voltage ◽  
Interface Circuit ◽  
Harvesting Systems ◽  
Current Energy

scholarly journals A highly efficient interface circuit for ultra-low-voltage energy harvesting

2013 ◽  
Vol 10 (24) ◽  
pp. 20130869-20130869 ◽  
Author(s):  
Zheng Yang ◽  
Yani Li ◽  
Jingmin Wang ◽  
Zhangming Zhu ◽  
Yintang Yang
Keyword(s):  
Energy Harvesting ◽  
Low Voltage ◽  
Interface Circuit ◽  
Highly Efficient

A Novel Interface Circuit with 99.2% MPPT Accuracy and 1.3% THD for Energy Harvesting

2017 ◽  
Vol 26 (11) ◽  
pp. 1750176 ◽  
Author(s):  
Yani Li ◽  
Zhangming Zhu ◽  
Yintang Yang ◽  
Yadong Sun ◽  
Xu Wang
Keyword(s):  
Energy Harvesting ◽  
Conversion Efficiency ◽  
Power Efficiency ◽  
Low Voltage ◽  
Harmonic Distortion ◽  
Cmos Process ◽  
Interface Circuit ◽  
Point Tracking ◽  
Peak Output Power ◽  
Power Point

To improve conversion efficiency and output quality of the energy harvester, a novel interface circuit with composite maximum power point tracking (MPPT) in energy harvesting applications is proposed in this paper. By using the ultra-low-voltage multiplier with digital control and simple one-cycle variable frequency technique, the converter realizes fast power tracking and high conversion efficiency, and minimizes the power consumption and harmonics, thereby obtaining high tracking precise and low total harmonic distortion (THD). Implemented in 65-nm CMOS process, this converter achieves 85.9% peak power efficiency with dc output voltage of 1.6[Formula: see text]V. The peak tracking efficiency and THD are 99.2% and 1.3%, respectively. The peak output power is 18.31[Formula: see text][Formula: see text]W, and the power loss of the entire converter is only 16.53[Formula: see text][Formula: see text]W.

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