On Chip Buck Boost Switched Capacitor Dc Dc Converter
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On Chip Buck Boost Switched Capacitor Dc Dc Converter
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Author : Chaohao Wang
language : en
Publisher:
Release Date : 2014
On Chip Buck Boost Switched Capacitor Dc Dc Converter written by Chaohao Wang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
The increasing integration level of CMOS integrated circuits (ICs) poses significant challenges for the power delivery network. Multiple independent power domains, each of them individually adjustable, are desirable for complex ICs to optimize the tradeoff between performance and energy consumption. A two-stage power management system, in which a first-stage global converter with a large down conversion ratio is followed by multiple second-stage local regulators for different power domains, fits well in modern power delivery networks. The first stage can be built with conventional, fully optimized DC-DC converters, while the second stage requires flexible, high-density, and high-efficiency on-chip DC-DC converters. With the enhanced fabrication capability of high-density on-chip capacitors, the switched-capacitor (SC) DC-DC converter becomes a perfect candidate for these second-stage on-chip regulators. This dissertation presents the architecture, modeling and design techniques for the development of fully integrated on-chip SC DC-DC converters for the purpose of local regulation. The proposed converter can step up or down the voltage based on the output requirement and circuit performance. Using the unit cell array approach, conversion ratios of n/(n+1) with buck configurations and (n+1)/n with boost configurations are achievable when n cells are grouped as a single converter. Thus, adequate topologies exist to provide a large range of output voltage with high efficiency. A prototype chip with 204 unit cells and nine different finely spaced buck and boost topologies was designed and fabricated in a 45nm bulk CMOS technology. The input is 1V, and the output ranges from 0.58V to 1.3V. The SC converter achieves a peak efficiency of 82.2% at a maximum power density of 0.16W/mm2. Furthermore, the efficiency varies by only 4.2% over the output voltage range. A digital algorithm for closed loop control was implemented in a field-programmable gate array (FPGA) to demonstrate that performance regulation using this type of converter can match circuit performance requirements and compensate for operating conditions or process variations. This dissertation also projects the potential improvements in SC converters with more advanced technology nodes as well as capacitor density scaling, such as using special on-chip capacitor processes like Metal-Insulator-Metal (MIM) capacitors and deep trench capacitors.
Power Systems On Chip
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Author : Bruno Allard
language : en
Publisher: John Wiley & Sons
Release Date : 2016-12-27
Power Systems On Chip written by Bruno Allard and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-12-27 with Science categories.
The book gathers the major issues involved in the practical design of Power Management solutions in wireless products as Internet-of-things. Presentation is not about state-of-the-art but about appropriation of validated recent technologies by practicing engineers. The book delivers insights on major trade-offs and a presentation of examples as a cookbook. The content is segmented in chapters to make access easier for the lay-person.
Design And Implementation Of Fully Integrated Inductive Dc Dc Converters In Standard Cmos
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Author : Mike Wens
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-05-10
Design And Implementation Of Fully Integrated Inductive Dc Dc Converters In Standard Cmos written by Mike Wens and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-05-10 with Technology & Engineering categories.
CMOS DC-DC Converters aims to provide a comprehensive dissertation on the matter of monolithic inductive Direct-Current to Direct-Current (DC-DC) converters. For this purpose seven chapters are defined which will allow the designer to gain specific knowledge on the design and implementation of monolithic inductive DC-DC converters, starting from the very basics.
Handbook Of Power Management Circuits
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Author : Haruo Kobayashi
language : en
Publisher: CRC Press
Release Date : 2016-03-23
Handbook Of Power Management Circuits written by Haruo Kobayashi and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-03-23 with Science categories.
This comprehensive book focuses on DC-DC switching power supply circuits, which are receiving attention as a key technology in green IT, especially in the automotive and consumer electronics industries. It covers buck converters, isolated converters, PFC converters, their modeling and analysis, several control methods, passive components, and their
Switched Capacitor Dc Dc Converter
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Author : Vincent Wai-Shan Ng
language : en
Publisher:
Release Date : 2011
Switched Capacitor Dc Dc Converter written by Vincent Wai-Shan Ng and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.
The traditional inductor-based buck converter has been the default design for switched-mode voltage regulators for decades. Switched capacitor (SC) dc-dc converters, on the other hand, have traditionally been used in low power (10mW) and low conversion ratio (
Dc Dc Converter Topologies
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Author : Gerry Moschopoulos
language : en
Publisher: John Wiley & Sons
Release Date : 2023-12-18
Dc Dc Converter Topologies written by Gerry Moschopoulos and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-12-18 with Technology & Engineering categories.
DC-DC Converter Topologies A comprehensive look at DC-DC converters and advanced power converter topologies for all skills levels As it can be rare for source voltage to meet the requirements of a Direct Current (DC) load, DC-DC converters are essential to access service. DC-DC power converters employ power semiconductor devices (like MOSFETs and IGBTs) as switches and passive elements such as capacitors, inductors, and transformers to alter the voltage provided by a DC source into the necessary DC voltage as is required by a DC load. This source can be a battery, solar panels, fuel cells, or a DC bus voltage fed by rectified AC utility voltage. As the many components of DC-DC converters can be differently arranged into circuit structures called topologies, there are as many possible circuit topologies as there are possible combinations of circuit elements. Focusing on DC-DC switch-mode power converters ranging from 50 W to 10kW, DC-DC Converter Topologies provides a survey of all converter topology types within this power range. General principles are described for each topology type using a representative converter as an example. Variations that can be found that differ from the example are then examined, with a helpful discussion of comparisons when relevant. A broad range of topics is covered within the book, from simple, low-power converters to complex, high-power converters and everywhere in between. DC-DC Converter Topologies readers will also find: A detailed discussion of four key DC-DC converter topologies Description of isolated two-switch pulse-width modulated (PWM) topologies including push-pull, half-bridge, and interleaved converters An exploration of high-gain converters such as coupled inductors, voltage multipliers, and switched capacitor converters This book provides the tools so that a non-expert will be equipped to deal with the vast array of DC-DC converters that presently exist. As such, DC-DC Converter Topologies is a useful reference for electrical engineers, professors, and graduate students studying in the field.
High Voltage Switched Capacitor Dc Dc Converter For System On A Chip
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Author : Mohammad Rashedul Hoque
language : en
Publisher:
Release Date : 2003
High Voltage Switched Capacitor Dc Dc Converter For System On A Chip written by Mohammad Rashedul Hoque and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with DC-to-DC converters categories.
Analog Circuit Design Volume 2
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Author : Jim Williams
language : en
Publisher: Elsevier Inc. Chapters
Release Date : 2012-12-31
Analog Circuit Design Volume 2 written by Jim Williams and has been published by Elsevier Inc. Chapters this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-31 with Technology & Engineering categories.
Essential Dc Dc Converters
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Author : Fang Lin Luo
language : en
Publisher: CRC Press
Release Date : 2018-10-08
Essential Dc Dc Converters written by Fang Lin Luo and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-08 with Technology & Engineering categories.
There are several families of DC/DC converters comprising hundreds of different topologies. Sorting through the various properties and characteristics is obviously a daunting task. Culled from the pages of the groundbreaking Advanced DC/DC Converters, this book provides a focused, concise overview of more than 80 topologies, developed by the authors, of essential DC/DC converters. The authors begin with an introduction to the basics of DC/DC conversion technology, then present an in-depth analysis of voltage-lift and super-lift converters. This book also includes a brand new chapter on the revolutionary ultra-lift Luo-converter. Several experimental and simulation results clearly illustrate the concepts.
Advanced Multiphasing Switched Capacitor Dc Dc Converters
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Author : Nicolas Butzen
language : en
Publisher: Springer Nature
Release Date : 2020-07-03
Advanced Multiphasing Switched Capacitor Dc Dc Converters written by Nicolas Butzen and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-07-03 with Technology & Engineering categories.
This book gives a detailed analysis of switched-capacitor DC-DC converters that are entirely integrated on a single chip and establishes that these converters are mainly limited by the large parasitic coupling, the low capacitor energy density, and the fact that switched-capacitor converter topologies only have a fixed voltage conversion ratio. The authors introduce the concept of Advanced Multiphasing as a way to circumvent these limitations by having multiple out-of-phase parallel converter cores interact with each other to minimize capacitor charging losses, leading to several techniques that demonstrate record efficiency and power-density, and even a fundamentally new type of switched-capacitor topology that has a continuously-scalable conversion ratio. Provides single-source reference to the recently-developed Advanced Multiphasing concept; Enables greatly improved performance and capabilities in fully integrated switched-capacitor converters; Enables readers to design DC-DC converters, where multiple converter cores are put in parallel and actively interact with each other over several phases to improve their capabilities.