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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 : 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 : Keng C. Wu
Publisher : Springer Science & Business Media
ISBN 13 : 9780412105418
Total Pages : 360 pages
Book Rating : 4.1/5 (54 download)
Download or read book Pulse Width Modulated DC-DC Converters written by Keng C. Wu and published by Springer Science & Business Media. This book was released on 1997-01-31 with total page 360 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 : 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 : Fang Lin Luo
Publisher : CRC Press
ISBN 13 : 1420037102
Total Pages : 436 pages
Book Rating : 4.4/5 (2 download)
Download or read book Essential DC/DC Converters written by Fang Lin Luo and published by CRC Press. This book was released on 2018-10-08 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book Inductance Current Emulator and Ripple Based Control Technique for BUCK Converter written by and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 : Sriharsha Santhapur
Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783847304494
Total Pages : 72 pages
Book Rating : 4.3/5 (44 download)
Download or read book Simulation of the Dc/Dc Converter written by Sriharsha Santhapur and published by LAP Lambert Academic Publishing. This book was released on 2012 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The task of this project work is to model a buck converter and a measurement system to sense the inductor current and output voltages of the buck converter system of Ericsson's BMR450. Such that the measurements of inductor current and output voltage can be sampled with 5MS/s and properly calibrated for BMR450 and get connected to the PCI-6111. Different current sensing techniques are analyzed and the chosen technique is modeled and simulated. The BMR450 system with measurement circuit model is implemented in MATLAB Simulink and SimPowersystems. Three different models of the buck converter are derived, simulated and compared.
Author : 葛致杰
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Inductor Current Balancing Technique for Fast-locking Delay-locked Loop Based Four-phase Buck Converter with Transient-modulated Constant On-time Control for Fast Load Transient Response written by 葛致杰 and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 孔樂
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (968 download)
Download or read book Novel Adaptive-Ramp Ripple-based Constant On-time Controlled Buck Converter written by 孔樂 and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fang Lin Luo
Publisher : CRC Press
ISBN 13 : 0203492927
Total Pages : 789 pages
Book Rating : 4.2/5 (34 download)
Download or read book Advanced DC/DC Converters written by Fang Lin Luo and published by CRC Press. This book was released on 2003-09-29 with total page 789 pages. Available in PDF, EPUB and Kindle. Book excerpt: DC/DC conversion techniques have undergone rapid development in recent decades. With the pioneering work of authors Fang Lin Luo and Hong Ye, DC/DC converters have now been sorted into their six generations, and by a rough count, over 500 different topologies currently exist, with more being developed each year. Advanced DC/DC Converters off
Author : Sri Harsh Pakala
Publisher :
ISBN 13 :
Total Pages : 226 pages
Book Rating : 4.:/5 (1 download)
Download or read book Frequency Control Techniques for Low-cost Ripple-based DC-DC Converters written by Sri Harsh Pakala and published by . This book was released on 2017 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current-mode ripple-based DC-DC converters have become a widely adopted choice of topology due to their inherent advantages of improved dynamic transient response along with a simple control loop. However, the switching frequency of such converters is a function of the converter's duty cycle and inherent circuit delays. Wide frequency variability could result in potential device reliability issues and increased complexity of the required input EMI filter. Frequency control of the converter is achieved through the implementation of a novel frequency-to-voltage converter that obviates the need for an external clock. Two converters are implemented that utilized the proposed clockless frequency control scheme. A constant switching frequency buck converter is designed using the proposed frequency stabilization scheme. This is followed by a spread spectrum-mode enabled buck converter. Both these solutions greatly lower system costs through reduced system complexity and lower bill-of-materials (BOM). The proposed solution is attractive when implemented as a dual-mode buck converter for wireless sensor networks (WSNs). The fixed frequency-mode buck enables improved efficiency when a WSN is in sense mode, while the spread-spectrum mode of the buck reduces spurious noise at the output node, thereby lowering EMI during transmit mode of a WSN.
Author : Yanfeng Chen
Publisher : Springer
ISBN 13 : 981132574X
Total Pages : 248 pages
Book Rating : 4.8/5 (113 download)
Download or read book Equivalent-Small-Parameter Analysis of DC/DC Switched-Mode Converter written by Yanfeng Chen and published by Springer. This book was released on 2018-10-06 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the applications of Equivalent-Small-Parameter Method (ESPM) in solving the steady-state periodic solutions, as well as stability analysis, of kinds of open-loop or closed-loop operated DC/DC converters, such as PWM, quasi-resonant and resonant ones. The analytical expressions of DC components and harmonics of state variables (inductor current and capacitor voltage) with DC/DC converters can be obtained by ESPM, which can be helpful to understand the nonlinear operating mechanism of switched-mode converters. It can also be useful for stability analysis and design for practical converters. Modeling and analysis on all kinds of DC/DC converters are introduced in detail in this book, along with a large amount of simulation or experimental waveforms to verify the correctness of the theoretical analysis based on ESPM.
Author : 阮呂政安
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (123 download)
Download or read book Design and Implementation of a Ripple-coupling Constant On-time Controlled Buck Converter with Low-quiescent Current and Fast Transient Response written by 阮呂政安 and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 楊子玄
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Design of the Ripple-based Constant On-time Controlled Buck Converters written by 楊子玄 and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Wen-Wei Chen
Publisher : Springer
ISBN 13 : 9811070040
Total Pages : 195 pages
Book Rating : 4.8/5 (11 download)
Download or read book Control Techniques for Power Converters with Integrated Circuit written by Wen-Wei Chen and published by Springer. This book was released on 2017-12-28 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers an overview of power electronic applications in the study of power integrated circuit (IC) design, collecting novel research ideas and insights into fast transient response to prevent the output voltage from dropping significantly at the undershoot. It also discusses techniques and training to save energy and increase load efficiency, as well as fast transient response and high efficiency, which are the most important factors for consumer products that implement power IC. Lastly, the book focuses on power electronics for system loop analysis and optimal compensation design to help users and engineers implement their applications. The book is a valuable resource for university researchers, power IC R&D engineers, application engineers and graduate students in power electronics who wish to learn about the power IC design principles, methods, system behavior, and applications in consumer products.
