A 4-phase cross-coupled charge pump with charge sharing clock scheme

Author

Zhu, Hui ; Huang, Mengshu ; Zhang, Yimeng ; Yoshihara, Tsutomu

Author_Institution

Grad. Sch. of Inf., Waseda Univ., Kitakyushu, Japan

fYear

2011

fDate

25-27 April 2011

Firstpage

73

Lastpage

76

Abstract

A 4-phase cross-coupled charge pump with charge sharing clock scheme is proposed in this paper. Four phase clock is utilized to prevent the reverse leakage current. A charge sharing clock control circuit is constructed, and the consumption in charging or discharging the bottom plate parasitic capacitance of the boost capacitors is reduced by half. The proposed charge pump is overstress free and compatible for standard CMOS process. Simulation results show a maximum 10% efficiency increase more than that of conventional charge pump without charge sharing.

Keywords

CMOS digital integrated circuits; charge pump circuits; clocks; driver circuits; CMOS process; boost capacitors; bottom plate parasitic capacitance; charge sharing clock control circuit; charge sharing clock scheme; cross coupled charge pump; four phase clock; reverse leakage current; Capacitors; Charge pumps; Clocks; Driver circuits; Parasitic capacitance; Simulation; Transistors; charge pump; charge sharing; cross couple; high efficiency;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Devices, Systems and Applications (ICEDSA), 2011 International Conference on

Conference_Location

Kuala Lumpur

ISSN

2159-2047

Print_ISBN

978-1-61284-388-9

Type

conf

DOI

10.1109/ICEDSA.2011.5959067

Filename

5959067