A fully-integrated 40-phase flying-capacitance-dithered switched-capacitor voltage regulator with 6mV output ripple

Suyoung Bang; Jae-sun Seo; Inhee Lee; Seokhyeon Jeong; Nathaniel Pinckney; David Blaauw; Dennis Sylvester; Leland Chang

doi:10.1109/VLSIC.2015.7231313

A fully-integrated 40-phase flying-capacitance-dithered switched-capacitor voltage regulator with 6mV output ripple

Suyoung Bang, Jae-sun Seo, Inhee Lee, Seokhyeon Jeong, Nathaniel Pinckney, David Blaauw, Dennis Sylvester, Leland Chang

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Scopus citations

Abstract

A switched-capacitor voltage regulator (SCVR) that dithers flying capacitance (C_FLY) to reduce output ripple is presented. The proposed technique is implemented in a 40-phase SCVR with 4b C_FLY modulation in 65nm CMOS. At 2.3V input, on-chip ripple magnitude of 6∼16mV at 1V output is measured for 11∼142mA load. Peak efficiency is 70.8% at a power density of 0.187W/mm².

Original language	English (US)
Title of host publication	2015 Symposium on VLSI Circuits, VLSI Circuits 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	C336-C337
ISBN (Electronic)	9784863485020
DOIs	https://doi.org/10.1109/VLSIC.2015.7231313
State	Published - Aug 31 2015
Event	29th Annual Symposium on VLSI Circuits, VLSI Circuits 2015 - Kyoto, Japan Duration: Jun 17 2015 → Jun 19 2015

Publication series

Name	IEEE Symposium on VLSI Circuits, Digest of Technical Papers
Volume	2015-August

Other

Other	29th Annual Symposium on VLSI Circuits, VLSI Circuits 2015
Country/Territory	Japan
City	Kyoto
Period	6/17/15 → 6/19/15

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/VLSIC.2015.7231313

Cite this

Bang, S., Seo, J., Lee, I., Jeong, S., Pinckney, N., Blaauw, D., Sylvester, D., & Chang, L. (2015). A fully-integrated 40-phase flying-capacitance-dithered switched-capacitor voltage regulator with 6mV output ripple. In 2015 Symposium on VLSI Circuits, VLSI Circuits 2015 (pp. C336-C337). [7231313] (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.2015.7231313

A fully-integrated 40-phase flying-capacitance-dithered switched-capacitor voltage regulator with 6mV output ripple. / Bang, Suyoung; Seo, Jae-sun; Lee, Inhee et al.

2015 Symposium on VLSI Circuits, VLSI Circuits 2015. Institute of Electrical and Electronics Engineers Inc., 2015. p. C336-C337 7231313 (IEEE Symposium on VLSI Circuits, Digest of Technical Papers; Vol. 2015-August).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Bang, S, Seo, J, Lee, I, Jeong, S, Pinckney, N, Blaauw, D, Sylvester, D & Chang, L 2015, A fully-integrated 40-phase flying-capacitance-dithered switched-capacitor voltage regulator with 6mV output ripple. in 2015 Symposium on VLSI Circuits, VLSI Circuits 2015., 7231313, IEEE Symposium on VLSI Circuits, Digest of Technical Papers, vol. 2015-August, Institute of Electrical and Electronics Engineers Inc., pp. C336-C337, 29th Annual Symposium on VLSI Circuits, VLSI Circuits 2015, Kyoto, Japan, 6/17/15. https://doi.org/10.1109/VLSIC.2015.7231313

Bang S, Seo J, Lee I, Jeong S, Pinckney N, Blaauw D et al. A fully-integrated 40-phase flying-capacitance-dithered switched-capacitor voltage regulator with 6mV output ripple. In 2015 Symposium on VLSI Circuits, VLSI Circuits 2015. Institute of Electrical and Electronics Engineers Inc. 2015. p. C336-C337. 7231313. (IEEE Symposium on VLSI Circuits, Digest of Technical Papers). doi: 10.1109/VLSIC.2015.7231313

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title = "A fully-integrated 40-phase flying-capacitance-dithered switched-capacitor voltage regulator with 6mV output ripple",

abstract = "A switched-capacitor voltage regulator (SCVR) that dithers flying capacitance (CFLY) to reduce output ripple is presented. The proposed technique is implemented in a 40-phase SCVR with 4b CFLY modulation in 65nm CMOS. At 2.3V input, on-chip ripple magnitude of 6∼16mV at 1V output is measured for 11∼142mA load. Peak efficiency is 70.8% at a power density of 0.187W/mm2.",

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AB - A switched-capacitor voltage regulator (SCVR) that dithers flying capacitance (CFLY) to reduce output ripple is presented. The proposed technique is implemented in a 40-phase SCVR with 4b CFLY modulation in 65nm CMOS. At 2.3V input, on-chip ripple magnitude of 6∼16mV at 1V output is measured for 11∼142mA load. Peak efficiency is 70.8% at a power density of 0.187W/mm2.

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A fully-integrated 40-phase flying-capacitance-dithered switched-capacitor voltage regulator with 6mV output ripple

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