Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"LDO"”.
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Comparative analysis of analog LDO design
… analyses different topologies of low dropout (LDO) regulator, mostly focusing on different frequency compensation schemes and power supply rejection analysis. This thesis discusses different analog LDO topologies and analyzes how they achieve stability using small signal analysis and related …
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Kmitočtová kompenzace LDO regulátoru pomocí pohyblivé nuly
… zabývá návrhem a analýzou kmitočtové kompenzace LDO regulátoru. Pojednává o možnostech pohyblivé nuly, paralelní a Millerovy kompenzace, její implementaci a matematickému vyjádření. Porovnává dva jednoduché návrhy LDO regulátorů v technologii CMOS z hlediska dynamických vlastností, přechodné …
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Modularizing the LDO to optimize performance based on application design constraints
This thesis aims to construct a modular low-dropout regulator that gives designers more freedom in building a highly efficient regulator that meets application demands. This modular design is able to separate DC regulation and high-frequency supply rejection while not compromising on either of the …
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A low-power, high-bandwidth LDO voltage regulator with no external capacitor
A low-dropout (LDO) voltage regulator for low-power applications is designed without an external capacitor for compensation. The regulator has two stages, the first a folded cascode amplifier and the second a large pass transistor acting as a common-source amplifier. To better explore the tradeoff …
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Time-based low dropout regulator
The low dropout regulator (LDO) is an essential building block for modern integrated circuits. Traditional analog design faces formidable challenges as technology scales down, such as lower supply voltage and channel length modulation. Digital LDOs do not have the problems that analog LDOs have, …
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Étude de la réactivité du diépoxyde de limonène lors de sa réticulation par des polyamines
… présente l'utilisation du diépoxyde de limonène (LDO) comme monomère époxy. Le potentiel du LDO à former des époxys par voie thermique avec des durcisseurs aminés à été explorée de manière pratique et théorique. Les plastiques sont des matériaux incontournables de nos sociétés modernes, et …
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Análise do anexo de prioridades e metas da LDO: um estudo na Secretaria Municipal de Saúde de João Pessoa no período de 2010 a 2013
… and Goals of the Budget Guidelines Law (LDO) for the Municipal Health Service (SMS) in João Pessoa in the period 2010-2013. Checking the service functions that the Annex is proposed as a tool for guiding the Annual Budget Law (LOA) and consequently the planning of municipal SMS João …
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APPLICATION OF LAYERED DOUBLE HYDROXIDES IN SOLID-PHASE EXTRACTION
… and their derivants (e.g., layered double oxide (LDO), Fe3O4@LDO, Fe3O4@LDH, (EDTA-Ni)-LDH), with different structures and properties, in some special and new SPE modes (e.g., dispersive solid-phase extraction (DSPE), co-precipitation extraction, in-syringe DSPE, automated DSPE) to improve the …
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Développement de nouveaux produits époxy biosourcés à base de dioxyde de limonène
… Among all biomaterials, limonene dioxide (LDO) can be an interesting candidate. First of all, ECH is not used to functionalize this molecule. Also, this molecule originates from limonene, which is an extract from the orange peel. LDO is constituted by a mixture of four stereoisomers that do …
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Supercapacitor-based linear converter for voltage regulator modules
… assisted low-dropout regulator (SCALDO). A less complex, lower cost design was achieved by reducing the number of switches in the original SCALDO and adding a second low dropout regulator (LDO). In the initial implementation of this reduced-switch SCALDO (RS-SCALDO), output …
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LOW-POWER LOW-VOLTAGE ANALOG CIRCUIT TECHNIQUES FOR WIRELESS SENSORS
… and a low power low voltage Low Dropout (LDO) regulator. This dissertation includes a low power analog circuit design for the RFID wireless sensor which consists of the energy harvest circuits (an optimized rectifier and a regulator with high current efficiency) and a sensor measurement …
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Design and analysis of an ASIC for energy harvesting applications
… generators. A Low Dropout Regulator (LDO) was designed to create a steady dc output voltage of 4.1 V. The ASIC for this system was designed using 0.6μm complementary metal-oxide-semiconductor (CMOS) technology.
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Modeling of Integrated Voltage Regulator Power delivery systems
… design and construction of a combined IVR and LDO system model using Simulink and MATLAB.
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Analysis on Supercapacitor Assisted Low Dropout (SCALDO) Regulators
… in switch-mode converters, low dropout (LDO) regulators were introduced to address the equirements of noise-sensitive and fast transient loads in portable devices. A typical commercial off-the-shelf LDO has its input voltage slightly higher than the desired regulated output for optimal …
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On-chip Voltage Regulator– Circuit Design and Automation
… on-chip implementation: (i) the low-drop-out (LDO) regulator and (ii) the switched-capacitor (SC)regulator. The first part of our research mainly focused on the LDO regulator. Inspired by the recent surge of interest for cap-less voltage regulators, we presented two fully on-chip external …
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Signal Conditioning Circuits for Injectable Pressure Sensors
… and tested which confirmed the function of 1.8V LDO, bandgap, oscillator and VCO circuits with a wirelessly powered PCB coil. Then, a second ASIC was designed to improve the accuracy of the first ASIC using a new switched-capacitor (SC) analog front end (AFE) and a SC single-slope ADC with an …
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Design and Analysis of a Single-Stage Inverter Using Parallel DC-DC Converters for Solar Cell Application
… cell, two DC-DC converters, two linear dropout (LDO) regulators, a square wave generator, and a switching circuit . The design and analysis of all parts were investigated individually in detail. The different parts of the circuit were then simulated using LTspice before testing the overall …
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Orçamento público: uma análise comparativa das ações fixadas no QDD da PMPB 2016 e suas realizações
… objectives, the Lei de Diretrizes Orçamentárias (LDO), orienting the goals and priorities, and finally the Lei Orçamentária Anual (LOA) that does what is planned based on the guidelines and programs defined in the previous instruments. The PMPB, as an organ of the direct administration of the …
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Ultra-low noise and low temperature drift power supply system design for RF applications
… existing commercial off-the-self Low Drop Out (LDO) regulators used as power sources in radio frequency applications. Noise of power supply contributes to the phase noise of RF transceivers. The temperature drift affects the precision of analog baseband. Though some commercial LDOs show very …
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Design of SCALDO based high-current DC power supply
… low dropout regulator (SCALDO) combined a linear regulator in series with a supercapacitor to act as a lossless voltage dropper. SCALDO created the opportunity to develop an entirely new family of highly efficient, interference-free, very-low-frequency DC-DC converters, …
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