Dual-use low-drop-out regulator/power gate with linear and on-off conduction modes for microprocessor on-die supply voltages in 14nm

Kosta Luria, Joseph Shor, Michael Zelikson, Alex Lyakhov

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

13 Scopus citations

Abstract

In recent generations of microprocessors, there has been an increase in the number and types of processors integrated on the same die. For example, in [1] several IA (Intel architecture) cores have been integrated on-chip with a graphics processor. Multi-core trends are expected to increase in future generations with different cores and units requiring varying supply voltages. As platform footprints are also required to decrease, this causes a unique challenge for voltage regulation. In [2], an on-die switching fully integrated voltage regulator (FIVR) was demonstrated, which presents a very good solution in many cases. However, the FIVR requires inductors, which may not always be available. In addition, it may be desirable to sub-divide some of the FIVR domains using power gates and/or linear voltage regulators, such as low-drop-out regulators (LDO). LDOs can be used to enable different units of the chip to operate at their optimal voltage levels, which could save power. For example, different types of cores often have significantly different minimum-Vcc levels in low-power mode. In addition, a core or graphics unit could enter a high-performance mode, where the voltage is ramped up to enable performance, while other cores are in sleep or low-power modes.

Original languageEnglish
Title of host publication2015 IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages156-157
Number of pages2
ISBN (Electronic)9781479962235
DOIs
StatePublished - 17 Mar 2015
Externally publishedYes
Event2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers - San Francisco, United States
Duration: 22 Feb 201526 Feb 2015

Publication series

NameDigest of Technical Papers - IEEE International Solid-State Circuits Conference
Volume58
ISSN (Print)0193-6530

Conference

Conference2015 62nd IEEE International Solid-State Circuits Conference, ISSCC 2015 - Digest of Technical Papers
Country/TerritoryUnited States
CitySan Francisco
Period22/02/1526/02/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Fingerprint

Dive into the research topics of 'Dual-use low-drop-out regulator/power gate with linear and on-off conduction modes for microprocessor on-die supply voltages in 14nm'. Together they form a unique fingerprint.

Cite this