A fully integrated self-oscillating switched-capacitor DC-DC converter for near-threshold loads

Matthew J. Turnquist, Markus Hiienkari, Jani Mäkipää, Lauri Koskinen

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

1 Citation (Scopus)

Abstract

We introduce a fully integrated step-down self-oscillating switched-capacitor DC-DC converter that delivers near-threshold (NT) output voltages. The converter is built in 28 nm UTBB FD-SOI and occupies 0.0104 mm2. Back-gate biasing is utilized to increase the load power range. Measurements show a peak efficiency of 87%, self start-up capability, and a minimum efficiency of 75% for 79 nW to 200 μW (ideal) loads. Measurements with an off-chip NT processor load also show high efficiency. The converter's large load power range and high efficiency are a good fit for energy-constrained NT processors.
Original languageEnglish
Title of host publicationSolid-State Circuits Conference (A-SSCC), 2015 IEEE Asian
PublisherInstitute of Electrical and Electronic Engineers IEEE
Pages1-4
ISBN (Electronic)978-146737191-9, 978-1-4673-7192-6
DOIs
Publication statusPublished - 21 Jan 2015
MoE publication typeA4 Article in a conference publication
EventIEEE Asian Solid-State Circuits Conference - Fujian, China
Duration: 9 Nov 201511 Nov 2015

Conference

ConferenceIEEE Asian Solid-State Circuits Conference
Abbreviated titleA-SSCC
CountryChina
CityFujian
Period9/11/1511/11/15

Fingerprint

DC-DC converters
Capacitors
Plant startup
Electric potential

Keywords

  • capacitors
  • electric inverters
  • reconfigurable hardware
  • back-gate biasing
  • energy-constrained
  • fully integrated
  • high-efficiency
  • output voltages
  • processor loads
  • self-oscillating

Cite this

Turnquist, M. J., Hiienkari, M., Mäkipää, J., & Koskinen, L. (2015). A fully integrated self-oscillating switched-capacitor DC-DC converter for near-threshold loads. In Solid-State Circuits Conference (A-SSCC), 2015 IEEE Asian (pp. 1-4). Institute of Electrical and Electronic Engineers IEEE. https://doi.org/10.1109/ASSCC.2015.7387441
Turnquist, Matthew J. ; Hiienkari, Markus ; Mäkipää, Jani ; Koskinen, Lauri. / A fully integrated self-oscillating switched-capacitor DC-DC converter for near-threshold loads. Solid-State Circuits Conference (A-SSCC), 2015 IEEE Asian. Institute of Electrical and Electronic Engineers IEEE, 2015. pp. 1-4
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title = "A fully integrated self-oscillating switched-capacitor DC-DC converter for near-threshold loads",
abstract = "We introduce a fully integrated step-down self-oscillating switched-capacitor DC-DC converter that delivers near-threshold (NT) output voltages. The converter is built in 28 nm UTBB FD-SOI and occupies 0.0104 mm2. Back-gate biasing is utilized to increase the load power range. Measurements show a peak efficiency of 87{\%}, self start-up capability, and a minimum efficiency of 75{\%} for 79 nW to 200 μW (ideal) loads. Measurements with an off-chip NT processor load also show high efficiency. The converter's large load power range and high efficiency are a good fit for energy-constrained NT processors.",
keywords = "capacitors, electric inverters, reconfigurable hardware, back-gate biasing, energy-constrained, fully integrated, high-efficiency, output voltages, processor loads, self-oscillating",
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Turnquist, MJ, Hiienkari, M, Mäkipää, J & Koskinen, L 2015, A fully integrated self-oscillating switched-capacitor DC-DC converter for near-threshold loads. in Solid-State Circuits Conference (A-SSCC), 2015 IEEE Asian. Institute of Electrical and Electronic Engineers IEEE, pp. 1-4, IEEE Asian Solid-State Circuits Conference, Fujian, China, 9/11/15. https://doi.org/10.1109/ASSCC.2015.7387441

A fully integrated self-oscillating switched-capacitor DC-DC converter for near-threshold loads. / Turnquist, Matthew J.; Hiienkari, Markus; Mäkipää, Jani; Koskinen, Lauri.

Solid-State Circuits Conference (A-SSCC), 2015 IEEE Asian. Institute of Electrical and Electronic Engineers IEEE, 2015. p. 1-4.

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

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N2 - We introduce a fully integrated step-down self-oscillating switched-capacitor DC-DC converter that delivers near-threshold (NT) output voltages. The converter is built in 28 nm UTBB FD-SOI and occupies 0.0104 mm2. Back-gate biasing is utilized to increase the load power range. Measurements show a peak efficiency of 87%, self start-up capability, and a minimum efficiency of 75% for 79 nW to 200 μW (ideal) loads. Measurements with an off-chip NT processor load also show high efficiency. The converter's large load power range and high efficiency are a good fit for energy-constrained NT processors.

AB - We introduce a fully integrated step-down self-oscillating switched-capacitor DC-DC converter that delivers near-threshold (NT) output voltages. The converter is built in 28 nm UTBB FD-SOI and occupies 0.0104 mm2. Back-gate biasing is utilized to increase the load power range. Measurements show a peak efficiency of 87%, self start-up capability, and a minimum efficiency of 75% for 79 nW to 200 μW (ideal) loads. Measurements with an off-chip NT processor load also show high efficiency. The converter's large load power range and high efficiency are a good fit for energy-constrained NT processors.

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Turnquist MJ, Hiienkari M, Mäkipää J, Koskinen L. A fully integrated self-oscillating switched-capacitor DC-DC converter for near-threshold loads. In Solid-State Circuits Conference (A-SSCC), 2015 IEEE Asian. Institute of Electrical and Electronic Engineers IEEE. 2015. p. 1-4 https://doi.org/10.1109/ASSCC.2015.7387441