Title :
A fully integrated self-oscillating switched-capacitor DC-DC converter for near-threshold loads
Author :
Matthew J. Turnquist;Markus Hiienkari;Jani M?kip??;Lauri Koskinen
Author_Institution :
Dept. of Micro- and Nanosciences, Aalto University
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 :
"Switches","DC-DC power converters","Delays","Generators","Clocks","Topology","Signal generators"
Conference_Titel :
Solid-State Circuits Conference (A-SSCC), 2015 IEEE Asian
DOI :
10.1109/ASSCC.2015.7387441
