题目/Title：Ultra-Low-Voltage Low-Power Charge Pump for Solar Energy Harvesting Systems

作者/Author：车晶晶,刘忠奇,张春,王志华
                        Jingjing Che,Zhongqi Liu,Chun Zhang,Zhihua Wang

会议/Conference：ICCCAS 2009

地点/Location：Milpitas, CA

年份/Issue Date：2009.23-25 July

页码/pages：pp. 674 - 677

摘要/Abstract：
This paper exploits a new charge pump used in integrated solar energy harvesting systems to improve the power efficiency under ultra low supply of under 0.7V supplied by on-chip photodiodes. Compared with conventional charge pumps, improvements of 20% in terms of output voltage gain and conversion efficiency can be achieved by using two symmetrical branches and PMOSFET-only transfer transistors per stage. The proposed circuit is implemented in UMC 0.18μm standard CMOS technology.