Title :
The design of a high-frequency multiphase voltage regulator with adaptive voltage positioning and all ceramic capacitors
Author_Institution :
Rhode Island IC Design Center, Int. Rectifier, North Kingstown, RI
Abstract :
The paper presents a high-frequency multiphase synchronous buck converter design for next generation microprocessors. Only ceramic capacitors are used in the output stage to reduce space and improve reliability. A simplified analysis of the multiphase converter with adaptive voltage positioning is given and used in the voltage loop compensation. Fast transient response is achieved, and the analysis and design are confirmed by test results and simulation
Keywords :
ceramic capacitors; design engineering; microprocessor chips; power convertors; transient response; voltage regulators; adaptive voltage positioning; ceramic capacitor; high-frequency multiphase synchronous buck converter; high-frequency multiphase voltage regulator; microprocessor; voltage loop compensation; Buck converters; Capacitors; Ceramics; Inductors; Microprocessors; Regulators; Testing; Transfer functions; Transient response; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-8975-1
DOI :
10.1109/APEC.2005.1452934
