Title :
Charge reusing in switched-capacitor voltage multipliers with reduced dynamic losses
Author :
Allasasmeh, Younis ; Gregori, Stefano
Author_Institution :
Sch. of Eng., Univ. of Guelph, Guelph, ON, Canada
Abstract :
In this work we study the application of charge reusing to switched-capacitor voltage multipliers. Considering three popular circuits (i.e. the Dickson, the heap, and the Fibonacci charge pumps), we analyze the dynamic power losses due to parasitic capacitances. We show how a charge reuse technique effectively decreases the dynamic power losses. The validity of our analysis is verified through simulations of design examples, which also illustrate the impact of charge reusing on voltage gain, output resistance, and conversion efficiency.
Keywords :
losses; switched capacitor networks; voltage multipliers; charge reusing; conversion efficiency; output resistance; reduced dynamic losses; switched-capacitor voltage multipliers; voltage gain; Analytical models; Charge pumps; MOS capacitors; Parasitic capacitance; Power dissipation; Power engineering and energy; Switched capacitor circuits; Switches; Switching frequency; Voltage;
Conference_Titel :
Circuits and Systems (MWSCAS), 2010 53rd IEEE International Midwest Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4244-7771-5
DOI :
10.1109/MWSCAS.2010.5548869
