Enhancing the Bandwidth of Low-Dropout Regulators Using Power Transmission Lines for High-Speed I/Os

David C. Zhang, Madhavan Swaminathan, Arijit Raychowdhury, David Keezer

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Power supply rejection peaking in low-dropout (LDO) voltage regulators can lead to reduced bandwidth and efficiency. This paper presents a new design method by combining power transmission lines (PTLs) with LDOs for enhancing its bandwidth and efficiency. This approach is applicable for LDOs regulating high-speed I/O drivers. The PTL combined with decoupling capacitors on the package or board is used to mitigate the power supply noise (PSN). This methodology is demonstrated using printed circuit board test vehicles with off-the-shelf components. Compared to conventional approaches, the PTL solution showed an 80% lower PSN.

Original languageEnglish (US)
Article number7850995
Pages (from-to)533-543
Number of pages11
JournalIEEE Transactions on Components, Packaging and Manufacturing Technology
Volume7
Issue number4
DOIs
StatePublished - Apr 2017

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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