A Switched-Active and Passive Filter Configuration for Resonance-Free Transient Regulation

Author

Sharma, Attma ; Ngo, Khai D T ; Wu, Xuelin ; Lee, Fred C. ; Xu, Ming

Author_Institution

Dept. of Electr. & Comput. Eng., Florida Univ., Gainesville, FL

Volume

21

Issue

5

fYear

2006

Firstpage

1492

Lastpage

1495

Abstract

The transient-induced resonance on the output voltage of a power supply can be eliminated if the output filter of the power supply is designed to appear as a constant resistor to the load. A switched active filter is studied as a means to provide this constant resistor over those narrow frequency bands where the resistor cannot be realized by passive means. Design-oriented modeling of the hybrid filter is presented, and is supported by a high-current, high-frequency simulation example, and a low-current, low-frequency experiment

Keywords

active filters; passive filters; switched filters; transients; constant resistor; passive filter; resonance-free transient regulation; switched active filter; transient-induced resonance; Active filters; Band pass filters; Frequency; Impedance; Microprocessors; Passive filters; Power supplies; Resistors; Resonance; Voltage; Active filter; adaptive voltage positioning (AVP); extended adaptive voltage positioning (EAVP); hybrid filter; microprocessor power delivery; switched active filter; transient regulation;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2006.882084

Filename

1688001