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Author : Cheung Fai Lee
Publisher :
ISBN 13 :
Total Pages : 172 pages
Book Rating : 4.:/5 (484 download)
Download or read book Design of Monolithic Current-mode DC-DC Buck Converters with Internal Current Sensing written by Cheung Fai Lee and published by . This book was released on 2001 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Tao Liu
Publisher :
ISBN 13 :
Total Pages : 139 pages
Book Rating : 4.:/5 (821 download)
Download or read book Digitally Controlled DC-DC Buck Converters with Lossless Current Sensing written by Tao Liu and published by . This book was released on 2011 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current sensing ability is one of the most desirable features of contemporary current or voltage mode controlled DC-DC converters. Current sensing can be used for over load protection, multi-stage converter load balancing, current-mode control, multi-phase converter current-sharing, load independent control, power efficiency improvement etc. There are handful existing approaches for current sensing such as external resistor sensing, triode mode current mirroring, observer sensing, Hall-Effect sensors, transformers, DC Resistance (DCR) sensing, Gm-C filter sensing etc. However, each method has one or more issues that prevent them from being successfully applied in DC-DC converter, e.g. low accuracy, discontinuous sensing nature, high sensitivity to switching noise, high cost, requirement of known external power filter components, bulky size, etc. In this dissertation, an offset-independent inductor Built-In Self Test (BIST) architecture is proposed which is able to measure the inductor inductance and DCR. The measured DCR enables the proposed continuous, lossless, average current sensing scheme. A digital Voltage Mode Control (VMC) DC-DC buck converter with the inductor BIST and current sensing architecture is designed, fabricated, and experimentally tested. The average measurement errors for inductance, DCR and current sensing are 2.1%, 3.6%, and 1.5% respectively. For the 3.5mm by 3.5mm die area, inductor BIST and current sensing circuits including related pins only consume 5.2% of the die area. BIST mode draws 40mA current for a maximum time period of 200us upon start-up and the continuous current sensing consumes about 400uA quiescent current. This buck converter utilizes an adaptive compensator. It could update compensator internally so that the overall system has a proper loop response for large range inductance and load current. Next, a digital Average Current Mode Control (ACMC) DC-DC buck converter with the proposed average current sensing circuits is designed and tested. To reduce chip area and power consumption, a 9 bits hybrid Digital Pulse Width Modulator (DPWM) which uses a Mixed-mode DLL (MDLL) is also proposed. The DC-DC converter has a maximum of 12V input, 1-11 V output range, and a maximum of 3W output power. The maximum error of one least significant bit (LSB) delay of the proposed DPWM is less than 1%.
Author : Mike Wens
Publisher : Springer Science & Business Media
ISBN 13 : 940071436X
Total Pages : 316 pages
Book Rating : 4.4/5 (7 download)
Download or read book Design and Implementation of Fully-Integrated Inductive DC-DC Converters in Standard CMOS written by Mike Wens and published by Springer Science & Business Media. This book was released on 2011-05-10 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : Marian K. Kazimierczuk
Publisher : John Wiley & Sons
ISBN 13 : 1119525659
Total Pages : 340 pages
Book Rating : 4.1/5 (195 download)
Download or read book Average Current-Mode Control of DC-DC Power Converters written by Marian K. Kazimierczuk and published by John Wiley & Sons. This book was released on 2022-03-14 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: AVERAGE CURRENT-MODE CONTROL OF DC-DC POWER CONVERTERS An authoritative one-stop guide to the analysis, design, development, and control of a variety of power converter systems Average Current-Mode Control of DC-DC Power Converters provides comprehensive and up-to-date information about average current-mode control (ACMC) of pulse-width modulated (PWM) dc-dc converters. This invaluable one-stop resource covers both fundamental and state-of-the-art techniques in average current-mode control of power electronic converters???featuring novel small-signal models of non-isolated and isolated converter topologies with joint and disjoint switching elements and coverage of frequency and time domain analysis of controlled circuits. The authors employ a systematic theoretical framework supported by step-by-step derivations, design procedures for measuring transfer functions, challenging end-of-chapter problems, easy-to-follow diagrams and illustrations, numerous examples for different power supply specifications, and practical tips for developing power-stage small-signal models using circuit-averaging techniques. The text addresses all essential aspects of modeling, design, analysis, and simulation of average current-mode control of power converter topologies, such as buck, boost, buck-boost, and flyback converters in operating continuous-conduction mode (CCM). Bridging the gap between fundamental modeling methods and their application in a variety of switched-mode power supplies, this book: Discusses the development of small-signal models and transfer functions related to the inner current and outer voltage loops Analyzes inner current loops with average current-mode control and describes their dynamic characteristics Presents dynamic properties of the poles and zeros, time-domain responses of the control circuits, and comparison of relevant modeling techniques Contains a detailed chapter on the analysis and design of control circuits in time-domain and frequency-domain Provides techniques required to produce professional MATLAB plots and schematics for circuit simulations, including example MATLAB codes for the complete design of PWM buck, boost, buck-boost, and flyback DC-DC converters Includes appendices with design equations for steady-state operation in CCM for power converters, parameters of commonly used power MOSFETs and diodes, SPICE models of selected MOSFETs and diodes, simulation tools including introductions to SPICE, MATLAB, and SABER, and MATLAB codes for transfer functions and transient responses Average Current-Mode Control of DC-DC Power Converters is a must-have reference and guide for researchers, advanced graduate students, and instructors in the area of power electronics, and for practicing engineers and scientists specializing in advanced circuit modeling methods for various converters at different operating conditions.
Author : Man Pun Chan
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (875 download)
Download or read book Design of Monolithic Digital Current-mode Controllers for DC-DC Converters written by Man Pun Chan and published by . This book was released on 2013 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Keng Chih Wu
Publisher : Springer Science & Business Media
ISBN 13 : 1461560217
Total Pages : 242 pages
Book Rating : 4.4/5 (615 download)
Download or read book Pulse Width Modulated DC-DC Converters written by Keng Chih Wu and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: For the first time in power electronics, this comprehensive treatment of switch-mode DC/DC converter designs addresses many analytical closed form equations such as duty cycle prediction, output regulation, output ripple, control loop-gain, and steady state time-domain waveform. Each of these equations are given various topologists and configurations, including forward, flyback, and boost converters. Pulse Width Modulated DC/DC Converters begins with a detailed approach to the quiescent operating locus of a power plant under open-loop. The reader is then led through other supporting circuits once again in the quiescent condition. These exercises result in the close-loop formulations of the subject system, providing designers with the ability to study the sensitivities of a system against disturbances. With the quiescent conditions well established, the book then guides the reader further into the territories of system stability where small signal behaviors are explored. Finally, some important large signal time-domain studies cap the treatment. Some distinctive features of this book include: *detailed coverage of dynamic close-loop converter simulations using only personal computer and modern mathematical software *Steady-state, time-domain analysis based on the concept of continuity of states Voltage-mode and current-mode control techniques and their differences of merits A detailed description on setting up different equations for DC/DC converters'simulation using only PC
Author : Bob Dobkin
Publisher : Newnes
ISBN 13 : 0128004665
Total Pages : 1145 pages
Book Rating : 4.1/5 (28 download)
Download or read book Analog Circuit Design Volume Three written by Bob Dobkin and published by Newnes. This book was released on 2014-11-29 with total page 1145 pages. Available in PDF, EPUB and Kindle. Book excerpt: Design Note Collection, the third book in the Analog Circuit Design series, is a comprehensive volume of applied circuit design solutions, providing elegant and practical design techniques. Design Notes in this volume are focused circuit explanations, easily applied in your own designs. This book includes an extensive power management section, covering switching regulator design, linear regulator design, microprocessor power design, battery management, powering LED lighting, automotive and industrial power design. Other sections span a range of analog design topics, including data conversion, data acquisition, communications interface design, operational amplifier design techniques, filter design, and wireless, RF, communications and network design. Whatever your application -industrial, medical, security, embedded systems, instrumentation, automotive, communications infrastructure, satellite and radar, computers or networking; this book will provide practical design techniques, developed by experts for tackling the challenges of power management, data conversion, signal conditioning and wireless/RF analog circuit design. A rich collection of applied analog circuit design solutions for use in your own designs. Each Design Note is presented in a concise, two-page format, making it easy to read and assimilate. Contributions from the leading lights in analog design, including Bob Dobkin, Jim Williams, George Erdi and Carl Nelson, among others. Extensive sections covering power management, data conversion, signal conditioning, and wireless/RF.
Author : Farzin Asadi
Publisher : Springer Nature
ISBN 13 : 3031025024
Total Pages : 229 pages
Book Rating : 4.0/5 (31 download)
Download or read book Dynamics and Control of DC-DC Converters written by Farzin Asadi and published by Springer Nature. This book was released on 2022-05-31 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: DC-DC converters have many applications in the modern world. They provide the required power to the communication backbones, they are used in digital devices like laptops and cell phones, and they have widespread applications in electric cars, to just name a few. DC-DC converters require negative feedback to provide a suitable output voltage or current for the load. Obtaining a stable output voltage or current in presence of disturbances such as: input voltage changes and/or output load changes seems impossible without some form of control. This book tries to train the art of controller design for DC-DC converters. Chapter 1 introduces the DC-DC converters briefly. It is assumed that the reader has the basic knowledge of DC-DC converter (i.e., a basic course in power electronics). The reader learns the disadvantages of open loop control in Chapter 2. Simulation of DC-DC converters with the aid of Simulink® is discussed in this chapter as well. Extracting the dynamic models of DC-DC converters is studied in Chapter 3. We show how MATLAB® and a software named KUCA can be used to do the cumbersome and error-prone process of modeling automatically. Obtaining the transfer functions using PSIM® is studied as well. These days, softwares are an integral part of engineering sciences. Control engineering is not an exception by any means. Keeping this in mind, we design the controllers using MATLAB® in Chapter 4. Finally, references are provided at the end of each chapter to suggest more information for an interested reader. The intended audiencies for this book are practice engineers and academians.
Author : Zhenyu Du
Publisher : Springer Science & Business Media
ISBN 13 : 3642316557
Total Pages : 1040 pages
Book Rating : 4.6/5 (423 download)
Download or read book Intelligence Computation and Evolutionary Computation written by Zhenyu Du and published by Springer Science & Business Media. This book was released on 2012-08-13 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt: 2012 International Conference of Intelligence Computation and Evolutionary Computation (ICEC 2012) is held on July 7, 2012 in Wuhan, China. This conference is sponsored by Information Technology & Industrial Engineering Research Center. ICEC 2012 is a forum for presentation of new research results of intelligent computation and evolutionary computation. Cross-fertilization of intelligent computation, evolutionary computation, evolvable hardware and newly emerging technologies is strongly encouraged. The forum aims to bring together researchers, developers, and users from around the world in both industry and academia for sharing state-of-art results, for exploring new areas of research and development, and to discuss emerging issues facing intelligent computation and evolutionary computation.
Author : 王聖尤
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)
Download or read book Ripple-based Constant On-time Controlled DC-DC Buck Converter with Inductor Current Sensing Technique written by 王聖尤 and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andre Kislovski
Publisher : Springer Science & Business Media
ISBN 13 : 9401178496
Total Pages : 409 pages
Book Rating : 4.4/5 (11 download)
Download or read book Dynamic Analysis of Switching-Mode DC/DC Converters written by Andre Kislovski and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 409 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most critical part of the modern switching-mode power supply is the regulated dc/dc converter. Its dynamic behavior directly determines or influences four of the important characteristics of the power supply: • Stability of the feedback loop • Rejection of input-voltage ripple and the closely-related transient re sponse to input-voltage perturbation • Output impedance and the closely-related transient response to load perturbation • Compatibility with the input EMI filter Due to the complexity of the operation of the converter, predicting its dynamic behavior has not been easy. Without accurate prediction, and depending only on building the circuit and tinkering with it until the operation is satisfactory, the engineering cost can easily escalate and schedules can be missed. The situation is not much better when the circuit is built in the computer, using a general-purpose circuit-simulation program such as SPICE. (At the end of this book is a form for obtaining information on a computer program especially well suited for dynamic analysis of switching-mode power converters: DYANA, an acronym for "DYnamic ANAlysis. " DYANA is based on the method given in this book. ) The main goal of this book is to help the power-supply designer in the prediction of the dynamic behavior by providing user-friendly analytical tools, concrete results of already-made analyses, tabulated for easy application by the reader, and examples of how to apply the tools provided in the book.
Author : Marian K. Kazimierczuk
Publisher : John Wiley & Sons
ISBN 13 : 111900957X
Total Pages : 960 pages
Book Rating : 4.1/5 (19 download)
Download or read book Pulse-Width Modulated DC-DC Power Converters written by Marian K. Kazimierczuk and published by John Wiley & Sons. This book was released on 2015-08-24 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt: PWM DC-DC power converter technology underpins many energy conversion systems including renewable energy circuits, active power factor correctors, battery chargers, portable devices and LED drivers. Following the success of Pulse-Width Modulated DC-DC Power Converters this second edition has been thoroughly revised and expanded to cover the latest challenges and advances in the field. Key features of 2nd edition: Four new chapters, detailing the latest advances in power conversion, focus on: small-signal model and dynamic characteristics of the buck converter in continuous conduction mode; voltage-mode control of buck converter; small-signal model and characteristics of the boost converter in the discontinuous conduction mode and electromagnetic compatibility EMC. Provides readers with a solid understanding of the principles of operation, synthesis, analysis and design of PWM power converters and semiconductor power devices, including wide band-gap power devices (SiC and GaN). Fully revised Solutions for all end-of-chapter problems available to instructors via the book companion website. Step-by-step derivation of closed-form design equations with illustrations. Fully revised figures based on real data. With improved end-of-chapter summaries of key concepts, review questions, problems and answers, biographies and case studies, this is an essential textbook for graduate and senior undergraduate students in electrical engineering. Its superior readability and clarity of explanations also makes it a key reference for practicing engineers and research scientists.
Author :
Publisher :
ISBN 13 :
Total Pages : 654 pages
Book Rating : 4.:/5 (318 download)
Download or read book EDN written by and published by . This book was released on 2006 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Nisha Das
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (773 download)
Download or read book Losses and Efficiency of PWM Dc-dc Buck Converter for CCM and Performance of Current Sensing Transformer written by Nisha Das and published by . This book was released on 2005 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 吳國鈞
Publisher :
ISBN 13 :
Total Pages : 89 pages
Book Rating : 4.:/5 (87 download)
Download or read book Average-Current-Mode Buck-Boost DC-DC Converter with Full-Wave Current Sensor written by 吳國鈞 and published by . This book was released on 2013 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 78 pages
Book Rating : 4.:/5 (91 download)
Download or read book Linear Voltage and Current Mode Control for the DC-DC Buck Converter written by and published by . This book was released on 2015 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: DC-DC converters are an important class of power converters that find applications in diverse applications such as portable electronic devices (cellular phones and laptop computers), hybrid electric vehicles (HEVs), and interfacing distributed generation (DG) sources such as photovoltaics (PVs) to the electric grid or microgrids. Almost all converters today are switching converters, i.e., contain power semiconductor switches that can be turned ON or OFF at high frequencies to achieve the desired power conversion, and invariably require a controller to meet performance objectives. The switching action makes these hybrid systems, and the relationship between the duty ratio of the switch (control input) and the converter voltage (controlled output) is nonlinear. Classical controller methods can be applied to these hybrid nonlinear switching converters using averaging and linearization. In this thesis, we compare linear voltage mode (that use the converter voltage) and current mode (that use the converter inductor current) designs for fixed frequency pulse width modulation (PWM) DC-DC converters. In addition to classical PID design, we also tune the PID controller gains using an LQR optimal control design that employs a high-gain observer (HGO) to estimate derivatives. The efficacy of these designs is verified through simulations and hardware implementation.
Author : Chi Yat Leung
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Low-voltage Design Methodology for Current-mode DC-DC Converters written by Chi Yat Leung and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
