DocumentCode
2541097
Title
High Resolution Digital Duty Cycle Modulation Schemes for Voltage Regulators
Author
Li, Jian ; Qiu, Yang ; Sun, Yi ; Huang, Bin ; Xu, Ming ; Ha, Dong S. ; Lee, Fred C.
Author_Institution
Center for Power Electronics Systems, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061 USA
fYear
2007
fDate
Feb. 25 2007-March 1 2007
Firstpage
871
Lastpage
876
Abstract
High switching frequency, high resolution digital pulse-width modulator (DPWM) is one of major challenges in the implementation of digital-controlled power converters, especially in the voltage regulator (VR) application. This paper proposes three different digital duty cycle modulation schemes to improve the resolution. Almost 10 times improvement on resolution can be achieved in the voltage regulator (VR) apparition. Design difficulty of the DPWM can be greatly reduced by proposed modulation schemes. Experimental results verify those modulation concepts.
Keywords
Clocks; Digital control; Digital modulation; Limit-cycles; Pulse modulation; Pulse width modulation converters; Regulators; Switching frequency; Virtual reality; Voltage; High resolution DPWM; limit cycle oscillation; voltage regulator;
fLanguage
English
Publisher
ieee
Conference_Titel
Applied Power Electronics Conference, APEC 2007 - Twenty Second Annual IEEE
Conference_Location
Anaheim, CA, USA
ISSN
1048-2334
Print_ISBN
1-4244-0713-3
Type
conf
DOI
10.1109/APEX.2007.357617
Filename
4195821
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