30–300mV input, ultra-low power, self-startup DC-DC boost converter for energy harvesting system

2012 ◽  
Author(s):  
Qing Liu ◽  
Xiaobo Wu ◽  
Menglian Zhao ◽  
Lu Wang ◽  
Xiaoting Shen
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Boost Converter ◽  
Ultra Low Power ◽  
Energy Harvesting System

An Ultra-Low-Power Integrated RF Energy Harvesting System in 65-nm CMOS Process

2015 ◽  
Vol 35 (2) ◽  
pp. 421-441 ◽  
Author(s):  
Lian-xi Liu ◽  
Jun-chao Mu ◽  
Ning Ma ◽  
Wei Tu ◽  
Zhang-ming Zhu ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Cmos Process ◽  
Rf Energy Harvesting ◽  
Ultra Low Power ◽  
Energy Harvesting System ◽  
Rf Energy

Modelling and Simulation an AC-DC Rectifier Circuit Based on Piezoelectric Vibration Sensor for Energy Harvesting System

2015 ◽  
Vol 785 ◽  
pp. 131-135 ◽  
Author(s):  
Mahidur R. Sarker ◽  
Azah Mohamed ◽  
Ramizi Mohamed
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Input Voltage ◽  
Boost Converter ◽  
Vibration Sensor ◽  
Power Circuit ◽  
Ultra Low Power ◽  
Rectifier Circuit ◽  
Vibration Transducer ◽  
Piezoelectric Vibration

This paper presents the modeling of a full-wave rectifier circuit based on piezoelectric vibration transducer for energy-harvester system. Piezoelectric vibration crystals are a viable means of harvesting energy for low-power embedded systems e.g. wireless sensor network. Distinct power handling circuits are assessed with the presence of piezoelectric vibration based energy harvesting transducer. Inside the interface circuit, the voltage should be started up when the AC input voltage is very low to supply a regulated DC voltage up to 2V. An active technique is chosen to design an ultra-low power circuit from a piezoelectric vibration transducer. MOSFET bride ac–dc rectifier, energy storage device e.g. capacitor and boost converter with regulator are the common components of the energy harvesting circuits. An integrated promoter ac-dc rectifier circuit and boost converter that accept a maximum input voltage of 0.3V and provide a regulated output voltage of 2V serve as the supply. The MOSFET and thyristor are considered to develop the proposed circuit replacing conventional ac-dc rectifier due to low input voltage at which diode does not work.

ULTRA-LOW POWER BOOST CONVERTER WITH CONSTANT ON-TIME-BASED MPPT FOR ENERGY HARVESTING APPLICATIONS

2014 ◽  
Vol 23 (02) ◽  
pp. 1450027 ◽  
Author(s):  
MINGYANG CHEN ◽  
MENGLIAN ZHAO ◽  
QING LIU ◽  
LU WANG ◽  
XIAOBO WU
Keyword(s):  
Energy Harvesting ◽  
Low Power ◽  
Power Efficiency ◽  
Input Voltage ◽  
Boost Converter ◽  
Cmos Process ◽  
Ultra Low Power ◽  
Voltage Range ◽  
Point Tracking ◽  
Power Point

An ultra-low power boost converter for energy harvesting applications is introduced in this brief. The idle power dissipation is reduced to 800 nW by using a novel output voltage detector (OVD) which is insensitive to temperature variation and process deviation. Furthermore, a constant on-time (COT)-based hysteretic burst mode controller with maximum power point tracking (MPPT) technique is developed to ensure high power efficiency for a wide input voltage range. After startup, the input voltage can be set as low as 30 mV. The whole system is designed and fabricated in SMIC 0.18 μm CMOS process, the end-to-end power efficiency of this converter can reach 49% at 350 mV input voltage and 65% at 750 mV input voltage.

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