A low-voltage high-efficiency voltage doubler for thermoelectric energy harvesting

Author

Jungmoon Kim ; Mok, Philip K. T. ; Chulwoo Kim ; Ying Khai Teh

Author_Institution

Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong, China

fYear

2013

fDate

3-5 June 2013

Firstpage

1

Lastpage

2

Abstract

This paper presents a low-voltage high-efficiency voltage doubler for thermoelectric energy harvesting. A negative charge pump is used to reduce on-resistance of PMOSFET load switches. Additional circuitry for achieving high efficiency just requires small chip-area and low-cost. The voltage doubler is implemented in 0.13-μm 1.2V CMOS process. The proposed doubler improves the low-voltage power efficiency by 17%, compared to conventional voltage doublers. Moreover, the proposed doubler can support wider load range. The maximum power efficiency reaches 52% at the input voltage of 0.2V.

Keywords

CMOS integrated circuits; energy harvesting; field effect transistor switches; thermoelectric conversion; CMOS process; PMOSFET load switches; circuitry; low-voltage high-efficiency voltage doubler; low-voltage power efficiency; maximum power efficiency; negative charge pump; on-resistance reduction; thermoelectric energy harvesting; voltage 0.2 V; voltage 1.2 V; Charge pumps; Clocks; Energy harvesting; Logic gates; Manganese; Threshold voltage; Timing; Charge pump; energy harvesting; high efficiency; low voltage; negative charge pump; thermoelectric energy harvesting; voltage doubler;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices and Solid-State Circuits (EDSSC), 2013 IEEE International Conference of

Conference_Location

Hong Kong

Type

conf

DOI

10.1109/EDSSC.2013.6628061

Filename

6628061