A RISC-V vector processor with tightly-integrated switched-capacitor DC-DC converters in 28nm FDSOI

Brian Zimmer, Yunsup Lee, Alberto Puggelli, Jaehwa Kwak, Ruzica Jevtic, Ben Keller, Stevo Bailey, Milovan Blagojevic, Pi Feng Chiu, Hanh Phuc Le, Po-Hung Chen, Nicholas Sutardja, Rimas Avizienis, Andrew Waterman, Brian Richards, Philippe Flatresse, Elad Alon, Krste Asanović, Borivoje Nikolić

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

25 Scopus citations

Abstract

This work demonstrates a RISC-V vector microprocessor implemented in 28nm FDSOI with fully-integrated non-interleaved switched-capacitor DCDC (SC-DCDC) converters and adaptive clocking that generates four on-chip voltages between 0.5V and 1V using only 1.0V core and 1.8V IO voltage inputs. The design pushes the capabilities of dynamic voltage scaling by enabling fast transitions (20ns), simple packaging (no off-chip passives), low area overhead (16%), high conversion efficiency (80-86%), and high energy efficiency (26.2 DP GFLOPS/W) for mobile devices.

Original languageEnglish
Title of host publication2015 Symposium on VLSI Circuits, VLSI Circuits 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
PagesC316-C317
ISBN (Electronic)9784863485020
DOIs
StatePublished - 31 Aug 2015
Event29th Annual Symposium on VLSI Circuits, VLSI Circuits 2015 - Kyoto, Japan
Duration: 17 Jun 201519 Jun 2015

Publication series

NameIEEE Symposium on VLSI Circuits, Digest of Technical Papers
Volume2015-August

Conference

Conference29th Annual Symposium on VLSI Circuits, VLSI Circuits 2015
CountryJapan
CityKyoto
Period17/06/1519/06/15

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  • Cite this

    Zimmer, B., Lee, Y., Puggelli, A., Kwak, J., Jevtic, R., Keller, B., Bailey, S., Blagojevic, M., Chiu, P. F., Le, H. P., Chen, P-H., Sutardja, N., Avizienis, R., Waterman, A., Richards, B., Flatresse, P., Alon, E., Asanović, K., & Nikolić, B. (2015). A RISC-V vector processor with tightly-integrated switched-capacitor DC-DC converters in 28nm FDSOI. In 2015 Symposium on VLSI Circuits, VLSI Circuits 2015 (pp. C316-C317). [7231305] (IEEE Symposium on VLSI Circuits, Digest of Technical Papers; Vol. 2015-August). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/VLSIC.2015.7231305