100 MHz DC-DC switching converter with tracking control

Author

Suresh, Sindhu ; Lu, Yang ; Czarkowski, Dariusz

Author_Institution

Dept. of Electr. & Comput. Eng., Polytech. Univ., Brooklyn, NY

fYear

2008

fDate

10-13 Nov. 2008

Firstpage

399

Lastpage

404

Abstract

A 100 MHz switching power supply with two-loop control is proposed for radio frequency power amplifiers. The power supply has a tracking bandwidth of 5 MHz and an estimated efficiency of 80%. The two-loop topology consists of a buck converter with an inner loop for one-cycle control and an outer loop that contains a PI compensator. With the two loops a stable feedback control is obtained with an excellent tracking. The VLSI two-loop feedback controller topology uses high-speed high-efficiency voltage comparator and current conveyors as their building blocks. AMI 0.5 mum CMOS technology is used. The converter performance is verified by means of simulations.

Keywords

CMOS integrated circuits; DC-DC power convertors; VHF amplifiers; VLSI; comparators (circuits); compensation; current conveyors; feedback; power amplifiers; switching convertors; tracking; CMOS technology; DC-DC switching converter; I. wireless communication; PI compensator; VLSI two-loop feedback controller topology; bandwidth 5 MHz; buck converter; frequency 100 MHz; radio frequency power amplifiers; size 0.5 mum; stable feedback control; switching power supply; tracking control; two-loop control; Bandwidth; Buck converters; CMOS technology; Power amplifiers; Power supplies; Radio control; Radio frequency; Radiofrequency amplifiers; Switching converters; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2008. IECON 2008. 34th Annual Conference of IEEE

Conference_Location

Orlando, FL

ISSN

1553-572X

Print_ISBN

978-1-4244-1767-4

Electronic_ISBN

1553-572X

Type

conf

DOI

10.1109/IECON.2008.4757987

Filename

4757987