Title :
Resonant switched-capacitor voltage regulator with ideal transient response
Author :
Cervera, Alon ; Peretz, Mor Mordechai
Author_Institution :
Dept. of Electr. & Comput. Eng., Ben-Gurion Univ. of the Negev, Beer-Sheva, Israel
Abstract :
A new, small and efficient voltage regulator realized using a resonant switched capacitor converter (RSCC) technology is introduced. Voltage regulation is implemented by means of simple digital pulse density modulation (PDM). It displays an ideal transient response with a zero-order response to all disturbance types. The newly developed RSCC acts as a gyrator with a wide range of voltage conversion ratios (below as well as above unity) with constant efficiency characteristics for the entire operation range. The operation of the voltage regulator is verified on a 20W experimental prototype, demonstrating ideal transient recovery without over/undershoots in response to load and line transients. Simple design guidelines for the voltage regulation system are provided and verified by experiments.
Keywords :
digital control; gyrators; power system transients; resonant power convertors; switched capacitor networks; transient response; voltage regulators; PDM; RSCC; constant efficiency characteristics; digital pulse density modulation; gyrator; line transients; load transients; power 20 W; resonant switched capacitor converter; resonant switched-capacitor voltage regulator; transient recovery; transient response; voltage conversion ratios; zero-order response; Capacitors; Gyrators; Inductors; Regulators; Switches; Transient analysis; Voltage control; Switch-mode power supplies; digital control; ideal transient recovery; pulse density modulation; switched capacitor converters; voltage regulation;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE
Conference_Location :
Fort Worth, TX
DOI :
10.1109/APEC.2014.6803409
