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

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

doi:10.1109/ASSCC.2015.7387441

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

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

VTT Technical Research Centre of Finland

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-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 language	English
Title of host publication	Solid-State Circuits Conference (A-SSCC), 2015 IEEE Asian
Publisher	IEEE Institute of Electrical and Electronic Engineers
Pages	1-4
ISBN (Electronic)	978-1-4673-7191-9
ISBN (Print)	978-1-4673-7192-6
DOIs	https://doi.org/10.1109/ASSCC.2015.7387441
Publication status	Published - 21 Jan 2015
MoE publication type	A4 Article in a conference publication
Event	IEEE Asian Solid-State Circuits Conference - Fujian, China Duration: 9 Nov 2015 → 11 Nov 2015

Conference

Conference	IEEE Asian Solid-State Circuits Conference
Abbreviated title	A-SSCC
Country/Territory	China
City	Fujian
Period	9/11/15 → 11/11/15

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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10.1109/ASSCC.2015.7387441

Cite this

@inproceedings{301b0cf42b424dab8fe0f0a4d3ec1565,

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",

author = "Turnquist, {Matthew J.} and Markus Hiienkari and Jani M{\"a}kip{\"a}{\"a} and Lauri Koskinen",

year = "2015",

month = jan,

day = "21",

doi = "10.1109/ASSCC.2015.7387441",

language = "English",

isbn = "978-1-4673-7192-6",

pages = "1--4",

booktitle = "Solid-State Circuits Conference (A-SSCC), 2015 IEEE Asian",

publisher = "IEEE Institute of Electrical and Electronic Engineers",

address = "United States",

note = "IEEE Asian Solid-State Circuits Conference, A-SSCC ; Conference date: 09-11-2015 Through 11-11-2015",

}

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

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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AU - Koskinen, Lauri

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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.

KW - capacitors

KW - electric inverters

KW - reconfigurable hardware

KW - back-gate biasing

KW - energy-constrained

KW - fully integrated

KW - high-efficiency

KW - output voltages

KW - processor loads

KW - self-oscillating

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ER -

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

Abstract

Conference

Keywords

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