Title :
Design of low-ripple multi-topology step-down switched capacitor power converter with adaptive control system
Author :
Melikyan, Vazgen ; Galstyan, Vache
Author_Institution :
Synopsys Armenia CJSC, Yerevan, Armenia
Abstract :
The paper presents a multi-topology step-down switched-capacitor (SC) converter with a novel adaptive control. The control system adjusts the number of SC cores to significantly reduce output voltage ripple, as well as performs dynamic frequency control depending on actual load of the converter. By means of new dynamic control system, the converter achieves 50ns response time and 24mV of maximal output ripple over wide range of load currents. Due to multi-topology structure high efficiency is provided over 1.5V range of input voltage. The converter is designed in 40nm CMOS process using the proposed technique.
Keywords :
CMOS integrated circuits; adaptive control; integrated circuit design; power convertors; power integrated circuits; switched capacitor networks; CMOS process; adaptive control system; frequency control; low-ripple multitopology step-down switched capacitor; multitopology step-down switched-capacitor converter; power converter; size 40 nm; time 50 ns; voltage 24 mV; Capacitance; Switches; Switching circuits; Topology; Video recording; Voltage control; CMOS; Fast Switching Limit (FSL); Pulse Frequency Modulation; Slow Switching Limit (SSL); power converter;
Conference_Titel :
Design & Test Symposium (EWDTS), 2014 East-West
Conference_Location :
Kiev
DOI :
10.1109/EWDTS.2014.7027083
