Title :
A fully-integrated power supply design for wireless implantable biosensors
Author :
Ashraf, Mohammadreza ; Masoumi, Nasser
Author_Institution :
Adv. VLSI Lab., Univ. of Tehran, Tehran, Iran
Abstract :
This paper presents a fully integrated thermoelectric energy harvesting circuit with a new 20mV-input boost converter for biomedical applications. In order to have a fully-integrated system, on-chip inductor and capacitors are used. A charge-pump-like circuit is added to the end of the boost converter to further increase the output voltage and relax the boost converter. The low input voltage requirements allow operation from a thermoelectric generator powered by body heat. Using this approach, a thermoelectric energy harvesting circuit has been designed in a 90nm CMOS technology. According to HSPICE Simulation results, the circuit operates from input voltages as low as 20mV and generates output voltage as high as 1V when connecting to a load ranging from 0 to 10uW. The value of on-chip inductor and capacitors are 10nH and 40pF, respectively.
Keywords :
CMOS integrated circuits; biosensors; capacitors; charge pump circuits; energy harvesting; inductors; power convertors; thermoelectric conversion; CMOS technology; HSPICE Simulation; biomedical applications; body heat; boost converter; capacitance 40 nF; capacitors; charge-pump-like circuit; fully integrated thermoelectric energy harvesting circuit; on-chip inductor; size 90 nm; thermoelectric generator; voltage 1 V; voltage 20 mV; wireless implantable biosensors; Capacitors; Educational institutions; Energy harvesting; Inductors; Resistance; Switches; System-on-chip; TEG; biosensors; boost converter; energy harvesting; thermoelectric;
Conference_Titel :
Electrical Engineering (ICEE), 2014 22nd Iranian Conference on
Conference_Location :
Tehran
DOI :
10.1109/IranianCEE.2014.6999530
