Ces travaux de thèse portent sur l'intégration hétérogène des fonctions de commande pour des transistors de puissance verticaux à grille isolée. Ce travail a consisté en la conception des fonctions de commande pour un transistor de type MOSFET en technologie CMOS planar, puis en la conception du composant de puissance lui-même, incluant des fonctions spécifiques pour l'auto-alimentation de sa commande. Le deuxième aspect de ce travail est l'étude et la réalisation technologique de métallisations épaisses en surface de puces silicium pour l'hybridation en chip on chip de la partie commande et de la partie puissance. Ce mémoire de thèse comporte trois chapitres équivalents : études théoriques et présentation des concepts, conception et validation expérimentale de la partie commande puis conception de la partie puissance et développements technologiques. Les champs d'application de ces travaux sont variés car ils couvrent un large domaine de l'électronique de puissance (convertisseurs hybrides). / The work presented in this PhD manuscript deals with heterogeneous integration of the control functions for driving a vertical power MOSFET. This work consisted in the design of the driving functions for a vertical power MOSFET in a planar CMOS technology, then in the design of the power transistor itself, including specific functions for the self powering of its driving circuitry. The second aspect of this work was the technological study and realization of thick metallization at the surface of silicon dies for the chip on chip assembly of the control and the power parts. This manuscript is composed of three equal chapters: the theoretical study and concepts presentation, the design and experimental validation of the driver part, and the design of the power part and the technological realizations. The field of application of this work covers a large spectrum as it concerns every hybrid converter

Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-07-12T12:29:15Z No. of bitstreams: 1 pedrosantosalmeida.pdf: 11306492 bytes, checksum: 80bd2f9ab4af41e3889b7bc91e4391b9 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-07-13T16:48:06Z (GMT) No. of bitstreams: 1 pedrosantosalmeida.pdf: 11306492 bytes, checksum: 80bd2f9ab4af41e3889b7bc91e4391b9 (MD5) / Made available in DSpace on 2016-07-13T16:48:06Z (GMT). No. of bitstreams: 1 pedrosantosalmeida.pdf: 11306492 bytes, checksum: 80bd2f9ab4af41e3889b7bc91e4391b9 (MD5) Previous issue date: 2012-03-23 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Este trabalho apresenta um estudo acerca da alimentação de diodos emissores de luz (LEDs) a partir da rede elétrica empregando conversores eletrônicos com correção do fator de potência. O estudo visa o desenvolvimento de um conversor que pode ser aplicado em iluminação pública, que atenda às demandas típicas de alto fator de potência, alta eficiência, reduzido número de componentes, baixa distorção harmônica da corrente de entrada e possa atingir uma elevada vida útil, através da substituição de capacitores eletrolíticos no circuito de potência por capacitores de filme. É proposta uma nova topologia de conversor para implementar tal acionamento, baseado em uma integração entre dois estágios, que passam a compartilhar um único interruptor estático. Os conversores SEPIC e buck-boost operando em modo de condução descontínua (DCM) são escolhidos para compor cada um destes estágios, atuando o primeiro na correção do fator de potência e o segundo na regulação de corrente na carga. Uma metodologia de projeto que visa excluir os capacitores eletrolíticos é desenvolvida, partindo de dados fotométricos que permitem aplicar nos LEDs uma ondulação limite de 50% em amplitude, sem causar prejuízos ao seu desempenho fotométrico. Um protótipo de 70 W é apresentado, cujos resultados experimentais demonstram alto fator de potência (0,998), baixa distorção harmônica de corrente (3,2%) e alta eficiência (90,2%), enquanto empregando somente capacitores de filme metalizado, de longa vida útil, no circuito de potência. Uma abordagem das possibilidades de se implementar um controlador digital para o novo conversor proposto é feita, partindo de um modelo de pequenos sinais para o conversor operando em DCM. / This work presents a study regarding the feeding of light-emitting diodes (LEDs) from mains (grid power) employing electronic drivers with power factor correction. The study aims the development of an LED driver which can be applied to public and street lighting, complying with the typical demands of high power factor, high efficiency, reduced component count, low total harmonic distortion (THD) of input current and which can attain long lifespan, through the substitution of electrolytic capacitors within the power circuit by film capacitors. It is proposed a new converter topology to implement such driver, based on an integration between two stages which share a common static power switch. The SEPIC and buck-boost converters operating in discontinuous conduction mode (DCM) are chosen to make up each of these two stages, the first acting as a power factor corrector and the second as a load currentcontrolling stage. A design methodology which aims the exclusion of electrolytic capacitors is developed, stemming from photometric data which allow the LEDs to be operated with current ripples up to 50% in amplitude, without causing any harm to their photometric performance. A 70 W prototype is presented, whose experimental results demonstrate high power factor (0.998), low current harmonic distortion (3.2%) and high efficiency (90.2%), while employing only long-life metallised-film capacitors on the power circuit. An approach to the possibilities of implementing a digital controller for the proposed novel converter is done, starting from a small-signal model for the converter operating in DCM.