Title:
High bandwidth wide LC-Resr compliant sigma-delta boost DC-DC switching converters

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dc.contributor.advisor Rincón-Mora, Gabriel A.
dc.contributor.author Keskar, Neeraj en_US
dc.contributor.committeeMember Ayazi, Farrokh
dc.contributor.committeeMember Divan, Deepakraj
dc.contributor.committeeMember Harley, Ronald
dc.contributor.committeeMember Morley, Thomas
dc.contributor.department Electrical and Computer Engineering en_US
dc.date.accessioned 2008-06-10T20:29:04Z
dc.date.available 2008-06-10T20:29:04Z
dc.date.issued 2008-03-26 en_US
dc.description.abstract In low power, battery-operated, portable applications, like cell phones, PDAs, digital cameras, etc., miniaturization at a low cost is a prominent driving factor behind product development and marketing efforts. As such, power supplies in portable applications must not only conform and adapt to their highly integrated on-chip and in-package environments but also, more intrinsically, respond quickly to fast load dumps to achieve and maintain high accuracy. The frequency-compensation network, however, limits speed and regulation performance because, in catering to all combinations of the output capacitor, its equivalent series resistance Resr, and the power inductor resulting from tolerance and modal design targets, it must compensate the worst-case condition and therefore restrain the performance of all other possible scenarios. Sigma-delta control, which addresses this issue in buck converters by easing its compensation requirements and offering one-cycle transient response, has not been able to simultaneously achieve high bandwidth, high accuracy, and wide LC-Resr compliance in boost (step-up) converters. This thesis investigates and presents techniques to achieve sigma-delta control in boost converters by essentially using explicit current and voltage control loops. The proposed techniques are developed conceptually and analytical expressions for stability range and transient response are derived. The proposed concepts are validated and quantified through PCB and IC prototypes to yield 1.41 to 6 times faster transient response than the state of the art in current-mode boost supplies, and this without any compromise in LC-Resr compliance range. en_US
dc.description.degree Ph.D. en_US
dc.identifier.uri http://hdl.handle.net/1853/22530
dc.publisher Georgia Institute of Technology en_US
dc.subject Filter stability en_US
dc.subject Boost dc-dc converters en_US
dc.subject Boost power supplies en_US
dc.subject Sigma-delta control en_US
dc.subject.lcsh Low voltage systems
dc.subject.lcsh Electric current converters
dc.subject.lcsh Switching circuits
dc.title High bandwidth wide LC-Resr compliant sigma-delta boost DC-DC switching converters en_US
dc.type Text
dc.type.genre Dissertation
dspace.entity.type Publication
local.contributor.advisor Rincón-Mora, Gabriel A.
local.contributor.corporatename School of Electrical and Computer Engineering
local.contributor.corporatename College of Engineering
relation.isAdvisorOfPublication bc94eb0c-0d6a-415a-88a5-e761f04a504a
relation.isOrgUnitOfPublication 5b7adef2-447c-4270-b9fc-846bd76f80f2
relation.isOrgUnitOfPublication 7c022d60-21d5-497c-b552-95e489a06569
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