Title :
Analysis of two-phase on-chip step-down switched capacitor power converters
Author :
Junmin Jiang ; Yan Lu ; Wing-Hung Ki
Author_Institution :
Dept. of Electron. & Comput. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, China
Abstract :
A theoretical analysis of two-phase fully-on-chip step-down switched-capacitor DC-DC converters is presented. It is based on a universal model of calculating the output voltage and the efficiency of converters with conversion ratios (N-l)/N. Both the top- and bottom-plate parasitic capacitors of each flying capacitors are included. Simulation results show that the errors of the computed output voltage and maximum efficiency of the model are less than 0.7% and 3%, when N is 2, 3, 4 and 5, respectively.
Keywords :
DC-DC power convertors; switched capacitor networks; bottom-plate parasitic capacitors; flying capacitors; two-phase fully-on-chip step-down switched-capacitor DC-DC converters; two-phase on-chip step-down switched capacitor power converters; Approximation methods; Capacitors; Loading; Simulation; Switches; System-on-chip; Topology;
Conference_Titel :
Circuits and Systems (APCCAS), 2014 IEEE Asia Pacific Conference on
Conference_Location :
Ishigaki
DOI :
10.1109/APCCAS.2014.7032847
