A4 Refereed article in a conference publication
A Fully Integrated Self-Oscillating Switched-Capacitor DC-DC Converter for Near-Threshold Loads
Authors: Matthew J. Turnquist, Markus Hiienkari Jani Mäkipää, Lauri Koskinen
Conference name: IEEE Asian Solid-State Circuits Conference (A-SSCC)
Publication year: 2015
Book title : 2015 IEEE Asian Solid-State Circuits Conference (A-SSCC)
Journal name in source: 2015 IEEE ASIAN SOLID-STATE CIRCUITS CONFERENCE (A-SSCC)
First page : 137
Last page: 140
Number of pages: 4
ISBN: 978-1-4673-7192-6
eISBN: 978-1-4673-7191-9
DOI: https://doi.org/10.1109/ASSCC.2015.7387441
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 mm(2). 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 mu W (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.
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 mm(2). 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 mu W (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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