Title :
Switched-capacitor dc-dc converters with output inductive filter
Author :
Salem, Loai ; Ismail, Yehea
Author_Institution :
Nano-Electron. Integrated Syst. Center (NISC), Northwestern Univ., Cairo, Egypt
Abstract :
Analysis and optimization of switched-capacitor (SC) dc-dc converters with a series inductive filter are developed. The steady-state output impedance of such SC resonant converters is calculated for a 2:1 conversion ratio. In addition, the necessary conditions for proper application of the output inductive filter are derived. The proposed optimization methodology applies numerical optimization to evaluate different loss components in order to find the optimal design point of highest conversion efficiency. This optimization method is verified through SPICE simulations on a 2:1 SC power stage in 65-nm CMOS process.
Keywords :
CMOS integrated circuits; DC-DC power convertors; SPICE; filters; numerical analysis; optimisation; resonant power convertors; switched capacitor networks; CMOS process; SC DC-DC converters; SC resonant converters; SPICE simulations; conversion efficiency; numerical optimization methodology; output inductive filter; series inductive filter; size 65 nm; steady-state output impedance; switched-capacitor DC-DC converters; Capacitors; Impedance; Inductors; Load modeling; Mathematical model; Optimization; Switches;
Conference_Titel :
Circuits and Systems (ISCAS), 2012 IEEE International Symposium on
Conference_Location :
Seoul
Print_ISBN :
978-1-4673-0218-0
DOI :
10.1109/ISCAS.2012.6272059
