Trends in Volumetric-Energy Efficiency of Implantable Neurostimulators: A Review From a Circuits and Systems Perspective

Autor: Santiago Martínez, Francisco Veirano, Timothy G. Constandinou, Fernando Silveira

Publikováno v: IEEE Transactions on Biomedical Circuits and Systems. 17:2-20

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::44a6ee16a07727d23265816ca7fa1860
https://doi.org/10.1109/tbcas.2022.3228895

Analysis of stepwise charging limits and its implementation for efficiency improvement in switched capacitor DC–DC converters

Autor: Lirida Alves de Barros Naviner, Pablo Perez-Nicoli, Pablo Castro Lisboa, Francisco Veirano, Fernando Silveira

Publikováno v: Analog Integrated Circuits and Signal Processing. 109:271-282

In this work we analysed the stepwise charging technique to find the limits from which it is beneficial in terms of load capacitance and charge–discharge frequency. We included in the analysis practical limitations such as the consumption of auxili

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b69a666268efb510b33e8912993bf310
https://doi.org/10.1007/s10470-021-01810-5

Optimum nMOS/pMOS Imbalance for Energy Efficient Digital Circuits

Autor: Lirida Alves de Barros Naviner, Francisco Veirano, Fernando Silveira

Publikováno v: IEEE Transactions on Circuits and Systems I: Regular Papers
IEEE Transactions on Circuits and Systems I: Regular Papers, IEEE, 2017

In this paper, we propose an asymmetrical length biasing scheme to be used in advanced nanometer technologies, which minimizes the energy per operation consumption of sub/near threshold digital CMOS circuits. Simulation results of two test circuits,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::36d2fe4e1d9ad892f1444844beb0e615
https://doi.org/10.1109/tcsi.2017.2747480

General Top/Bottom-Plate Charge Recycling Technique for Integrated Switched Capacitor DC-DC Converters

Autor: Francisco Veirano, Pablo Perez-Nicoli, Fernando Silveira, Pablo Castro Lisboa

Publikováno v: IEEE Transactions on Circuits and Systems I: Regular Papers. 63:470-481

Energy loss due to top/bottom plate parasitic capacitances is one of the factors determining the efficiency of integrated switched capacitor DC/DC converters. This loss is particularly significant when MOS gate or deep trench capacitors are used. We

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a63fae56cc68c7d529ad280874b54794
https://doi.org/10.1109/tcsi.2016.2528478

Comparator With Self Controlled Delay for Active Rectifiers in Inductive Powering

Autor: Fernando Silveira, Pablo Perez-Nicoli, Francisco Veirano

Publikováno v: 2018 IEEE Wireless Power Transfer Conference (WPTC).

In active rectifiers the diodes are replaced by transistors whose gates are controlled by a comparator. The power consumption of these comparators mainly depends on its bias current and working frequency and is not directly scaled with the output pow

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c6ebb217291ba4f9547ab2960639fe77
https://doi.org/10.1109/wpt.2018.8639278