Mémoire de Maîtrise
DOI
https://doi.org/10.11606/D.18.2013.tde-26082013-134021
Document
Auteur
Nom complet
Mariela Mayumi Franchini Sasaki Sassi
Unité de l'USP
Domain de Connaissance
Date de Soutenance
Editeur
São Carlos, 2013
Directeur
Jury
Soares Júnior, João Navarro (Président)
Monteiro, José Roberto Boffino de Almeida
Pérez, Marcelo Arturo Jara
Titre en portugais
Projeto de fontes de tensão de referência através de metaheurísticas
Mots-clés en portugais
Circuitos analógicos
CMOS
Fontes de referência
Metaheurísticas
Resumé en portugais
Titre en anglais
Voltage references design applying metaheuristics
Mots-clés en anglais
Analog circuits
CMOS
Metaheuristics
Voltage references
Resumé en anglais
Voltage references are widely employed to compose electronic circuits, since they are responsible for generating and maintaining a constant voltage to the rest of the circuit. As it is an analog circuit and it has several conditions to fulfill (low temperature coefficient, low supply voltage, low line regulation, among others), its complexity is high, which reflects at the time/difficulties of a design. In order to increase the quality of the circuit and to minimize the design time, it was studied voltage references design using metaheuristics, which are optimization methods used in problems with no analytical solution. The applied metaheuristics were: genetic algorithms, simulated annealing and pattern search, they are all available in an optimization toolbox at Matlab. The designed voltage reference, applying a topology proposed in this work, provides a reference voltage of 0.302 V at 300 K at a minimum supply voltage of 1.01 V. The temperature coefficient, from -10°C to 90°C, is 19 ppm/°C at 1.01 V and the line regulation, using a supply voltage from 1.01 V to 2.5 V, is 81 ppm/V at 300 K. The power consumption is 4.2 W also at 300 K and 1.01 V and the area is 0.061 'MM POT.2'. As a result, it was shown that those methods are efficient in sizing the devices of the chosen topology and it was obtained a voltage reference that fulfills all established criteria and that is superior at the line regulation criterion, when compared to other voltage reference of the literature. In this work, the 0.35-'mü'm CMOS technology provided by Austria Micro Systems (AMS) was used.

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Mariela.pdf (2.71 Mbytes)
Date de Publication
2013-08-30

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