A low power cross-coupled charge pump with charge recycling scheme

Author

Hwang, Hye-Won ; Chun, Jung-Hoon ; Kwon, Kee-Won

Author_Institution

Dept. of Semicond. Syst. Eng., Sungkyunkwan Univ., Suwon, South Korea

fYear

2009

fDate

6-8 Nov. 2009

Firstpage

1

Lastpage

5

Abstract

A low power charge pump that recycles the wasted charges is described. CMOS switched Dickson charge pump cannot accommodate charge recycling since charges are leaking from the boosted supply (VPP) back to the external supply (VDD) during the recycling period. Given power constraints, the proposed 2-stage cross-coupled pump with leak-back current suppression can provide the current 5 times higher than that of the conventional cross-coupled pump at VPP of 5 V. Its maximum achievable VPP is also 1.6 times higher. The test chip is under fabrication using 0.18 um CMOS technology.

Keywords

CMOS analogue integrated circuits; charge pump circuits; 2-stage cross-coupled pump; CMOS Dickson pump circuits; NMOS diode; boosted supply; charge recycling scheme; external supply; leak-back current suppression; low power charge pump; size 0.18 mum; voltage 5 V; CMOS technology; Charge pumps; Circuits; Consumer electronics; Energy consumption; MOS devices; Power supplies; Read-write memory; Recycling; Switches; charge pump; charge recycle; energy scavenging; reverse current block;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Circuits and Systems (SCS), 2009 3rd International Conference on

Conference_Location

Medenine

Print_ISBN

978-1-4244-4397-0

Electronic_ISBN

978-1-4244-4398-7

Type

conf

DOI

10.1109/ICSCS.2009.5412265

Filename

5412265