A 120-mV input, fully integrated dual-mode charge pump in 65-nm CMOS for thermoelectric energy harvester

2012 ◽  
Author(s):  
Po-Hung Chen ◽  
Koichi Ishida ◽  
Xin Zhang ◽  
Yasuyuki Okuma ◽  
Yoshikatsu Ryu ◽  
...  
Keyword(s):  
Energy Harvester ◽  
Charge Pump ◽  
Dual Mode ◽  
Fully Integrated ◽  
Thermoelectric Energy

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 fully integrated frequency synthesizer for a dual-mode GPS and Compass receiver

2012 ◽  
Vol 33 (3) ◽  
pp. 035004 ◽  
Author(s):  
Xiaojie Chu ◽  
Min Lin ◽  
Yin Shi ◽  
F F Dai
Keyword(s):  
Frequency Synthesizer ◽  
Dual Mode ◽  
Fully Integrated
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