DocumentCode
549866
Title
A spurious-free switching buck converter using a delta-sigma modulation controller with a scalable sampling frequency
Author
Alghamdi, Mohammad K. ; Hamoui, Anas A.
Author_Institution
McGill Univ., Montreal, QC, Canada
fYear
2011
fDate
15-17 June 2011
Firstpage
18
Lastpage
19
Abstract
This switching DC-DC buck converter uses a ΔΣ-modulator controller with a scalable sampling frequency, in order to eliminate the spurs and minimize the noise floor at its output without sacrificing the power efficiency. Fabricated in 0.13-μm digital CMOS, it achieves a spurious-free output with voltage ripples below 70mV over its full loading range (2mA to 800mA). Furthermore, its power efficiency is higher than 72% over this range, with 96% peak efficiency.
Keywords
CMOS digital integrated circuits; DC-DC power convertors; delta-sigma modulation; DC-DC buck converter; current 2 mA to 800 mA; delta-sigma modulation controller; digital CMOS; scalable sampling frequency; size 0.13 mum; spurious-free output; switching DC-DC buck converter; CMOS integrated circuits; CMOS technology; Control systems; Frequency control; Frequency conversion; Frequency modulation;
fLanguage
English
Publisher
ieee
Conference_Titel
VLSI Circuits (VLSIC), 2011 Symposium on
Conference_Location
Honolulu, HI
ISSN
2158-5601
Print_ISBN
978-1-61284-175-5
Type
conf
Filename
5986403
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