An ultra-low input voltage power management circuit for indoor micro-light energy harvesting system

2010 ◽  
Author(s):  
Hua Yu ◽  
Hanzhong Wu ◽  
Yumei Wen
Keyword(s):  
Energy Harvesting ◽  
Power Management ◽  
Input Voltage ◽  
Light Energy ◽  
Low Input ◽  
Energy Harvesting System

scholarly journals Design of New Power Management Circuit for Light Energy Harvesting System

Sensors ◽  
2016 ◽  
Vol 16 (3) ◽  
pp. 270 ◽  
Author(s):  
Issa Jafer ◽  
Paul Stack ◽  
Kevin MacNamee
Keyword(s):  
Energy Harvesting ◽  
Power Management ◽  
Light Energy ◽  
Energy Harvesting System

A 20-mV Input DC/DC Converter for Energy Harvesting Applications

2015 ◽  
Vol 24 (05) ◽  
pp. 1550070 ◽  
Author(s):  
Zheng Yang ◽  
Jingmin Wang ◽  
Yani Li ◽  
Yintang Yang
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Power Management ◽  
High Efficiency ◽  
Low Power Design ◽  
Input Voltage ◽  
Voltage Source ◽  
Storage Capacitor ◽  
Cmos Process ◽  
Low Input

A low input step-up DC/DC converter and power manager in 0.18-μm CMOS process is presented. The proposed converter can work with the input voltage as low as 20 mV. The extremely low input voltage makes it suitable for energy harvesting and power management. Four logic controlled outputs provide the best voltage for various applications to accommodate low power design requirements. A low current low dropout regulator (LDO) is utilized to provide a regulated 2.2 V output for powering low power processors or other low power integrated circuit (ICs). Reserve energy on the storage capacitor CSTORE provides power when the input voltage source is unavailable, thus prolongs the life of the system and expands the application range. Extremely low quiescent current (6 μA) and high efficiency design (64%@300 μA load current) ensure the fastest possible charge times of the output reservoir capacitor. This work provides a complete power management solution for wireless sensing and data acquisition.

A 50 mV Fully-Integrated Self-Startup Circuit for Thermal Energy Harvesting

2017 ◽  
Vol 26 (12) ◽  
pp. 1750196 ◽  
Author(s):  
Yanzhao Ma ◽  
Yinghui Zou ◽  
Shengbing Zhang ◽  
Xiaoya Fan
Keyword(s):  
Energy Harvesting ◽  
Thermal Energy ◽  
Output Voltage ◽  
Charge Pump ◽  
Input Voltage ◽  
Fully Integrated ◽  
Input Capacitance ◽  
Low Input ◽  
Lc Oscillator ◽  
Thermal Energy Harvesting

A fully-integrated self-startup circuit with ultra-low voltage for thermal energy harvesting is presented in this paper. The converter is composed of an enhanced swing LC oscillator and a charge pump with decreased equivalent input capacitance. The LC oscillator has ultra-low input voltage and high output voltage swing, and the charge pump has a fast charging speed and small equivalent input capacitance. This circuit is designed with 0.18[Formula: see text][Formula: see text]m standard CMOS process. The simulation results show that the output voltage is in the range of 0.14[Formula: see text]V and 2.97[Formula: see text]V when the input voltage is changed from 50[Formula: see text]mV to 150[Formula: see text]mV. The output voltage could reach 2.87[Formula: see text]V at the input voltage of 150[Formula: see text]mV and the load of 1[Formula: see text]M[Formula: see text]. The maximum efficiency is in the range of 10.0% and 14.8% when the input voltage is changed from 0.2[Formula: see text]V to 0.4[Formula: see text]V. The circuit is suitable for thermoelectric energy harvesting to start with ultra-low input voltage.

A Power Management Integrated System for Biomass-based Marine Sediment Energy Harvesting

2014 ◽  
Vol 23 (01n02) ◽  
pp. 1450012 ◽  
Author(s):  
Guoxian Huang ◽  
Ridvan Umaz ◽  
Udayarka Karra ◽  
Baikun Li ◽  
Lei Wang
Keyword(s):  
Energy Harvesting ◽  
Power Management ◽  
Integrated Circuit ◽  
Electrical Energy ◽  
Energy Conversion Efficiency ◽  
Integrated System ◽  
Cmos Process ◽  
Energy Harvesting System ◽  
Metabolic Activities ◽  
Sustainable Power

This paper presents the design of an underwater energy harvesting system, which would provide persistent and sustainable power supply for remote underwater sensing and surveillance devices. The system consists of Distributed Benthic Microbial Fuel Cell (DBMFC) and the associated power management integrated circuit. The DBMFC exploits bacterial metabolic activities associated with the redox reaction to generate electrical energy directly from biodegradable substrates. The power management circuit collects the energy harvested by the DBMFC and boosts the output voltage to a sufficient and stable level for loads such as sensor devices. Simulation results of the power management system in a 90nm CMOS process demonstrate the expected functions and the significant improvement in energy conversion efficiency.

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