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Academic literature on the topic 'Simulation de circuit incluant la fiabilité'
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Dissertations / Theses on the topic "Simulation de circuit incluant la fiabilité"
Tran, Thi-Phuong-Yen. "CMOS 180 nm Compact Modeling Including Ageing Laws for Harsh Environment." Thesis, Bordeaux, 2022. http://www.theses.fr/2022BORD0185.
Full textIn the past decades, the demand for complicated functionality and high-density integration for Integrated Circuits (ICs) has resulted in metal-oxide-silicon (MOS) devices' scaling down. In this scenario, the reliability problems are the considerable concerns due to the device miniaturization, such as Hot Carrier Injection (HCI) and Bias Temperature Instability (BTI) that seriously impact the device performance. In some application fields where the cost of failure is extremely high such as space, oilfield, or healthcare, the device must be able to stably and reliably work, especially at an extensive temperature range. Although device failure mechanisms have been intensively investigated in the past, the investigations of these mechanisms at high temperatures are seldom studied.This thesis aims to develop the aging laws for 0.18µm CMOS technology to optimize circuit design for a targeted lifetime under extreme temperatures. We conducted an intensive aging test campaign for both nMOS and pMOS featuring several gate lengths. The intrinsic HCI and BTI mechanisms were characterized and modeled under typical operating voltage biases to avoid the risk of overaccelerating other wear-out mechanisms that are not supposed to be experienced in practical application. Our experiment is a long-term test with a stress time of up to 2,000 hours. This thesis presents measurement results up to 230°C that have never been studied before in the literature for this technology.The aging laws are finally integrated into an electronic design automation (EDA) environment to predict the evolution of the degraded transistor/circuit electrical parameters and the lifetime estimation due to the aging effects. In addition, the reliability test at the circuit level has been performed to validate and verify the proposed aging models. This approach offers the possibility to assess and simulate the IC specification drift due to the aging effect in the early design phase and optimize the circuit design over lifetime
Boige, François. "Caractérisation et modélisation électrothermique compacte étendue du MOSFET SiC en régime extrême de fonctionnement incluant ses modes de défaillance : application à la conception d'une protection intégrée au plus proche du circuit de commande." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0084/document.
Full textNowaday, the challenge of the transition to carbon-free energy involves a systematic use of electrical energy with power electronics at the heart of the exchanges. To meet the challenges, power electronics requires increasingly high-performance devices to provide a high level of integration, high efficiency and a high level of reliability. Today, the power transistor, of the MOSFET type, made of silicon carbide (SiC) is a breakthrough technology that allows us to meet the challenges of integration and efficiency through their low level of loss and high switching speed. However, their limited reliability and low robustness at extreme operating conditions such as repetitive short-circuits are now hindering their expansion in industrial applications. In this thesis, an in-depth study of the short-circuit behaviour of an exhaustive set of commercial devices, describing all the structural and technological variants involved, was carried out on a specific test bench developed during the thesis, in order to quantify their short-circuit resistance. This study highlighted both generic and singular properties of SiC semiconductors for every Mosfet version such as a dynamic gate leakage current and a failure mode by a short-circuit grid-source leading, under certain conditions of use and for certain Mosfet structures, to a self-blocking drain-source. A systematic research of the physical understanding of the observed mechanisms was carried out by an approach combining an internal technological analysis of the failed devices and a fine electrothermal modelling. A compact electrothermal modeling extended to failure mode consideration has been established and implemented in circuit software. This model was confronted with numerous experimental results describing a short-circuit cycle up to failure. This model offers an interesting analytical support and also helps the design of protection circuits. Thus, as an application, a driver equipped with a digital processing part has been designed and validated in detection mode for several short-circuit scenarios but also potentially for the detection of the degradation of the power component grid. Other more exploratory work has also been carried out in partnership with the University of Nottingham to study the impact of repeated pulse short-circuit regimes on the aging of parallel chips with dispersions. The propagation of a first failure mode from a "weak" device was also studied. This work paves the way for the design of intrinsically safe and available converters by taking advantage of the atypical and original properties of SiC semiconductors and Mosfet in particular
Devanneaux, Vincent. "Modélisation des machines asynchrones triphasées à cage d'écureuil en vue de la surveillance et du diagnostic." Toulouse, INPT, 2002. http://www.theses.fr/2002INPT038H.
Full textLoayza, Ramirez Jorge Miguel. "Study and characterization of electrical overstress aggressors on integrated circuits and robustness optimization of electrostatic discharge protection devices." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEI044.
Full textThis Ph.D. thesis concerns reliability issues in the microelectronics industry for the most advanced technology nodes. In particular, the Electrical OverStress (EOS) issue is studied. Reducing EOS failures in Integrated Circuits (ICs) is becoming more and more important. However, the EOS topic is very complex and involves many different causes, viewpoints, definitions and approaches. In this context, a complete analysis of the current status of the EOS issue is carried out. Then, the Ph.D. objectives can be defined in a clear way. In particular, robustness increase of on-chip protection structures and IC characterization against EOS-like aggressors are two of the main goals. In order to understand and quantify the behavior of ICs against these aggressors, a dedicated EOS test bench is put in place along with the definition of a characterization methodology. A full characterization and comparison is performed on two different Electro- Static Discharge (ESD) power supply clamps. After identifying the potential weaknesses of the promising Silicon-Controlled Rectifier (SCR) device, a new SCR-based device with a turn-off capability is proposed and studied thanks to 3-D Technology Computer-Aided Design (TCAD)simulation. Triggering and turn-off behaviors are studied, as well as its optimization. Finally, three different approaches are proposed for improving the robustness of the IC onchip protection circuits. They are characterized thanks to the EOS test bench which allows identifying their assets as well as their points of improvement
Kara-Terki, Chafik. "Une méthode de mise au point des circuits intégrés." Paris 6, 1986. http://www.theses.fr/1986PA066113.
Full textBenmansour, Adel. "Contribution à l'étude des mécanismes de défaillances de l'IGBT sous régimes de fortes contraintes électriques et thermiques." Thesis, Bordeaux 1, 2008. http://www.theses.fr/2008BOR13752/document.
Full textFor these last years, the IGBT (Insulated Gate Bipolar Transistor) has occupied a dominating place comparing to other power components. Used in a multitude of applications, it became the component of reference in power electronics domain. In this thesis, I will be interested in operation of the IGBT in extreme thermal and electrical conditions. Using the simulation of a bi-dimensional physical model of a Punch Through Trench IGBT, I will be interested more particularly in the limits of the SOA (Safe Operating Area), and more precisely in the mechanisms which can lead to the failure of the component. An experimental study will present the behaviour of various structures of IGBT in various electrical and thermal operating conditions, more particularly the influence of the temperature and the gate resistance. Lastly, a proposal for an improvement of IGBT will be developed in simulation by implementing a layer SiGe in the N+ buffer layer of the IGBT
Lahbib, Insaf. "Contribution à l'analyse des effets de vieillissement de composants actifs et de circuits intégrés sous contraintes DC et RF en vue d'une approche prédictive." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMC256.
Full textThe work of this thesis focuses on the simulation of the electrical parameters degradation of MOS and bipolar transistors under static and dynamic stresses. This study was conducted using an in-house reliability simulation tool. According to the MOS or bipolar technology, the studied mechanisms were successively: Hot Carrier Injection, Bias Temperature instability, Mixed Mode and Reverse base emitter bias. The investigation was then extended to circuit-level. The effect of transistors degradation on a ring oscillator frequency and the RF performances of a low noise amplifier were investigated. The circuits were subjected to DC, AC and RF constraints. Predictability of these degradations has been validated by experimental aging tests on encapsulated and PCB-mounted demonstrators. The results of these studies proved the accuracy of the simulator and validated the quasi-static calculation method used to predict the degradation under dynamic stress. The goal of this research is to embed this predictive approach into a circuit design flow to ensure its reliability
Idrissi, Imane. "Contribution au Diagnotic des Défauts de la Machine Asynchrone Doublement Alimentée de l'Eolienne à Vitesse Variable." Thesis, Normandie, 2019. http://www.theses.fr/2019NORMR033/document.
Full textActually, the Doubly Fed Induction Generators (DFIG) are omnipresent in the wind power market, owing to their construction simplicity, their low purchase cost and their mechanical robustness. However, as any other electrical machine, these generators are subject to defects of different order (electrical, mechanical, electromagnetic ...) or of different type (sensor, actuator or system). That’s why, it is important to design an effective diagnostic approach, able to early detect, locate and identify any defect or abnormal behavior, which could undermine the healthy operation of this machine On the one hand, motivated by the observer-based fault diagnosis methods strengths, we proposed, in this thesis, a diagnostic approach for the faults detection, localization and identification of the DFIG used in variable speed wind turbine. This approach is based on the use of the efficient and widely used Kalman observers. The state estimation errors of the linear Kalman filter and the non-linear Kalman filters, named: The Extended Kalman Filter (EKF) and the Unscented Kalman Filter (UKF) are used as faults sensitive residuals. In order to avoid false alarms and to decouple faults from disturbances and noises, the faults detection is carried out by the analysis of the residuals generated, by the mean of statistical tests such as: Hinkley Page Test (PH) and DCS Test (Dynamic) Cumulative Sum). For the localization step in case of multiple and simultaneous faults, the Dedicated Observer scheme (DOS) and the Generalized Observer scheme (GOS) are applied. In addition, the fault level is determined in the fault identification step. Sensor faults, actuator and system faults of DFIG, are treated in this research work. On the other hand, a comparative study between the three Kalman observers proposed is performed. The comparison was done in terms of (1) the computation time, (2) the estimation accuracy, and (3) the convergence speed
De, Choudens Philippe. "Test intégré de processeur facilement testable." Phd thesis, 1985. http://tel.archives-ouvertes.fr/tel-00319265.
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