{"title":"A ∑Δ based DC-DC converter with supply noise suppression","authors":"K. Schulmeyer, C. Trehan, K. Chao","doi":"10.1109/MWSCAS.2007.4488643","DOIUrl":null,"url":null,"abstract":"An architecture that reduces the effects of supply noise on the regulated output of a DC-DC converter has been proposed. The structure consists of a sigma-delta modulator which drives the half bridge switches directly. The output of the quantizer is taken as the feedback for the sigma-delta as usual, but this feedback signal goes to a one-bit digital-to- analog converter that uses the noisy voltage supply as a reference to suppress the supply noise at the output. The proposed structure, designed and simulated using a 2.5V TSMC 0.25u process, shows supply ripple suppression.","PeriodicalId":256061,"journal":{"name":"2007 50th Midwest Symposium on Circuits and Systems","volume":"32 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2007 50th Midwest Symposium on Circuits and Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MWSCAS.2007.4488643","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
An architecture that reduces the effects of supply noise on the regulated output of a DC-DC converter has been proposed. The structure consists of a sigma-delta modulator which drives the half bridge switches directly. The output of the quantizer is taken as the feedback for the sigma-delta as usual, but this feedback signal goes to a one-bit digital-to- analog converter that uses the noisy voltage supply as a reference to suppress the supply noise at the output. The proposed structure, designed and simulated using a 2.5V TSMC 0.25u process, shows supply ripple suppression.
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