Title :
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
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;
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
DOI :
10.1109/ICSCS.2009.5412265
