Title :
Control design and closed-loop analysis of a switched-capacitor DC-to-DC converter
Author :
Byungcho Choi ; Wonseok Lim ; Seungwon Choi
Author_Institution :
Sch. of Electron. & Electr. Eng., Kyungpook Nat. Univ., Taegu
fDate :
7/1/2001 12:00:00 AM
Abstract :
The theoretical and practical details involved in the control design and closed-loop analysis of a step-down switched-capacitor (SC) DC-to-DC converter are presented. The state-space averaging technique is applied to extract the small-signal dynamics of the power stage, and a graphical loop gain method is used to design the feedback compensation and analyze the closed-loop performance of an SC converter. The results of the control design and closed-loop analysis are substantiated by experiments using a prototype SC converter
Keywords :
Bode diagrams; DC-DC power convertors; PWM power convertors; closed loop systems; compensation; control system analysis; state feedback; state-space methods; switched capacitor networks; voltage control; Bode plot; Mason´s rule; PWM block; asymptotic plot; closed-loop analysis; computer simulation; control design; feedback compensation; graphical loop gain method; small-signal dynamics; state-space averaging technique; step load response; step-down converter; switched-capacitor DC-DC converter; transfer functions; Capacitors; Control design; DC-DC power converters; Feedback loop; Performance analysis; Performance gain; Pulse width modulation; State feedback; Switches; Switching converters;
Journal_Title :
Aerospace and Electronic Systems, IEEE Transactions on
