A Scalable and PCB-Friendly Daisy-Chain Approach to Parallelize LDO Regulators with 2.613% Current-Sharing Accuracy Using Dynamic Element Matching for Integrated Current Sensing

Bhushan Talele, Raveesh Magod, Keith Kunz, Sanjeev Manandhar, Bertan Bakkaloglu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A single low-dropout regulator (LDO) for high output current applications presents a challenge for chip-level thermal management and also tends to be inefficient. Straightforward parallelizing of LOOs to increase output current is a flawed approach since subtle variations between devices even with the state-of-the-art manufacturing techniques can cause one of the LDOs to take over the maximum current, and thus enter current limit or thermal shutdown leading to instability and loss of regulation. Parallelizing regulators [1]-[6] to share the high output current equally across each regulator while preserving regulation and stability and to spread the dissipated heat uniformly is thus a challenging design problem.

Original languageEnglish (US)
Title of host publication2020 IEEE International Solid-State Circuits Conference, ISSCC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages494-496
Number of pages3
ISBN (Electronic)9781728132044
DOIs
StatePublished - Feb 2020
Event2020 IEEE International Solid-State Circuits Conference, ISSCC 2020 - San Francisco, United States
Duration: Feb 16 2020Feb 20 2020

Publication series

NameDigest of Technical Papers - IEEE International Solid-State Circuits Conference
Volume2020-February
ISSN (Print)0193-6530

Conference

Conference2020 IEEE International Solid-State Circuits Conference, ISSCC 2020
CountryUnited States
CitySan Francisco
Period2/16/202/20/20

ASJC Scopus subject areas

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

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    Talele, B., Magod, R., Kunz, K., Manandhar, S., & Bakkaloglu, B. (2020). A Scalable and PCB-Friendly Daisy-Chain Approach to Parallelize LDO Regulators with 2.613% Current-Sharing Accuracy Using Dynamic Element Matching for Integrated Current Sensing. In 2020 IEEE International Solid-State Circuits Conference, ISSCC 2020 (pp. 494-496). [9063144] (Digest of Technical Papers - IEEE International Solid-State Circuits Conference; Vol. 2020-February). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISSCC19947.2020.9063144