Chapter 2 Buck PWM DC DC Converter
|
|
- Chester Robertson
- 5 years ago
- Views:
Transcription
1 Chapter 2 Buck PWM DC DC Converter H. Wang, Power Management and High-speed I/O in CMOS Systems 1/25
2 Buck Circuit and Its equivalent circuits CCM: continuous conduction mode DCM: discontinuous conduction mode Critical mode: CCM/DCM boundary Duty cycle D freewheeling diode, a flywheel diode, or a catch diode H. Wang, Power Management and High-speed I/O in CMOS Systems 2/25
3 CCM / DCM CCM: continuous conduction mode DCM: discontinuous conduction mode H. Wang, Power Management and High-speed I/O in CMOS Systems 3/25
4 How to reach the steady state? H. Wang, Power Management and High-speed I/O in CMOS Systems 4/25
5 Idealized current and voltage waveforms in the PWM buck converter for CCM v GS v L 0 V I -V O 0 -V O il I O V I DT A + DT V I A - T V O L i L _ V O L T t t 0 i S I SM DT I O T t I I 0 v S DT T t V SM =V I 0~DT 0 i D DT T I O t I D 0 v D 0 DT DT T T t t DT~T -V I H. Wang, Power Management and High-speed I/O in CMOS Systems 5/25
6 Device Stresses for CCM The maximum voltage and current stresses of the switch and the diode in CCM for steady state operation are H. Wang, Power Management and High-speed I/O in CMOS Systems 6/25
7 DC Voltage Transfer Function for CCM Based on the principle of inductor volt-second balance, we know that A A ( V V ) DT V (1 D) T I O O ( V V ) D V (1 D) I O O VD I VODVO VOD M V O VDC DV V V O I I D H. Wang, Power Management and High-speed I/O in CMOS Systems 7/25
8 Efficiency How about of the efficiency of the ideal buck DC-DC converter? 100%!!! H. Wang, Power Management and High-speed I/O in CMOS Systems 8/25
9 Boundary between CCM and DCM Peak inductor current DC load current at the boundary Load resistance at the boundary The worst case for maintaining in CCM The minimum inductance required to maintain the CCM. H. Wang, Power Management and High-speed I/O in CMOS Systems 9/25
10 Ripple Voltage in Buck Converter for CCM i i I C L O Figure 2.6 Output circuit of the buck converter v (0) v ( DT) v ( T) c c c Figure 2.7 Waveforms illustrating the ripple voltage in the PWM buck converter. v v v o rc c H. Wang, Power Management and High-speed I/O in CMOS Systems 10/25
11 Ripple Voltage in CCM C C min C C min The peak-to-peak ripple voltage is independent of the voltage across the filter capacitance C and is determined only by the ripple voltage across the ESR if C C min max D,1 D max 2 f s r C min For the worst case, Dmin = 0 or Dmax = 1. Thus, the above condition is satisfied at any value of D if C C min 1 f r 2 s C C C min Namely rc C T 2 H. Wang, Power Management and High-speed I/O in CMOS Systems 11/25
12 Ripple Voltage in CCM If condition shown in following equation is not satisfied, both the voltage drop across the filter capacitor C and the voltage drop across the ESR contribute to the ripple output voltage. C C min max D,1 max f r 2 s C D min The conservative estimation of the total voltage ripple is H. Wang, Power Management and High-speed I/O in CMOS Systems 12/25
13 Power losses Switching Losses with Linear MOSFET Output Capacitance C o Switching energy loss in every cycle W CV 2 sw o I Total switching loss in the converter is P f CV 2 sw s o I H. Wang, Power Management and High-speed I/O in CMOS Systems 13/25
14 Power losses Assume: The inductor current i L is ripple-free and equals the dc output current I O. Figure 2.9 Equivalent circuit of the buck converter with parasitic resistances and the diode offset voltage. Similarly H. Wang, Power Management and High-speed I/O in CMOS Systems 14/25
15 Converter Efficiency The overall power loss is given by Thus, the converter efficiency is H. Wang, Power Management and High-speed I/O in CMOS Systems 15/25
16 Efficiency vs Output Current H. Wang, Power Management and High-speed I/O in CMOS Systems 16/25
17 DC Voltage Transfer Function of Lossy Converter for CCM H. Wang, Power Management and High-speed I/O in CMOS Systems 17/25
18 MOSFET Gate-drive Power W Q V G g GSpp P W f W f Q V T G G S G S g GSpp The power gain is defined by k p P P O G The power-added efficiency (PAE) ( 附加功率效率 ) PAE P O P I P G The total efficiency is defined by t P I PO P G H. Wang, Power Management and High-speed I/O in CMOS Systems 18/25
19 DC Analysis of PWM Buck Converter for DCM 0~DT DT ~( D D ) T 1 ( D D ) T ~ T 1 H. Wang, Power Management and High-speed I/O in CMOS Systems 19/25
20 CCM/DCM H. Wang, Power Management and High-speed I/O in CMOS Systems 20/25
21 DC Voltage Transfer Function for DCM DC Voltage Transfer Function for DCM volt-second balance principle: A + =A -, so, We can also get (p58 in textbook.) Maximum Inductance for DCM Maximum duty cycle at the CCM/DCM boundary H. Wang, Power Management and High-speed I/O in CMOS Systems 21/25
22 Power Losses and Efficiency for DCM Neglecting the power loss in the ESR of the filter capacitor H. Wang, Power Management and High-speed I/O in CMOS Systems 22/25
23 Buck Converter with Synchronous Rectifier H. Wang, Power Management and High-speed I/O in CMOS Systems 23/25
24 CCM at no load condition H. Wang, Power Management and High-speed I/O in CMOS Systems 24/25
25 Summary Step-down, transformerless, nonisolated, CCM/DCM The converter has conduction losses and switching losses. The duty cycle D of the lossy converter is greater than that of the lossless converter at the same dc voltage transfer function. The peak-to-peak value of i L is independent of the dc load current for CCM. Input current is pulsating. The ESR of the inductor in DCM is usually lower than that in CCM because the inductance is lower. The efficiency of the converter in CCM is higher than that in DCM at the same dc input and output currents and the same switching frequency. Why? H. Wang, Power Management and High-speed I/O in CMOS Systems 25/25
Chapter 9 Zero-Voltage or Zero-Current Switchings
Chapter 9 Zero-Voltage or Zero-Current Switchings converters for soft switching 9-1 Why resonant converters Hard switching is based on on/off Switching losses Electromagnetic Interference (EMI) because
More informationConstant-Frequency Soft-Switching Converters. Soft-switching converters with constant switching frequency
Constant-Frequency Soft-Switching Converters Introduction and a brief survey Active-clamp (auxiliary-switch) soft-switching converters, Active-clamp forward converter Textbook 20.4.2 and on-line notes
More informationSTEADY-STATE AND SMALL-SIGNAL MODELING OF A PWM DC-DC SWITCHED-INDUCTOR BUCK-BOOST CONVERTER IN CCM
STEADY-STATE AND SMALL-SIGNAL MODELING OF A PWM DC-DC SWITCHED-INDUCTOR BUCK-BOOST CONVERTER IN CCM Dissertation submitted in partial fulllment of the requirements for the degree of Doctor of Philosophy
More informationR. W. Erickson. Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder
R. W. Erickson Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder 6.3.5. Boost-derived isolated converters A wide variety of boost-derived isolated dc-dc converters
More informationS. General Topological Properties of Switching Structures, IEEE Power Electronics Specialists Conference, 1979 Record, pp , June 1979.
Problems 179 [22] [23] [24] [25] [26] [27] [28] [29] [30] J. N. PARK and T. R. ZALOUM, A Dual Mode Forward/Flyback Converter, IEEE Power Electronics Specialists Conference, 1982 Record, pp. 3-13, June
More informationR. W. Erickson. Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder
R. W. Erickson Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder 18.2.2 DCM flyback converter v ac i ac EMI filter i g v g Flyback converter n : 1 L D 1 i v C R
More informationChapter 6: Converter circuits
Chapter 6. Converter Circuits 6.1. Circuit manipulations 6.2. A short list of converters 6.3. Transformer isolation 6.4. Converter evaluation and design 6.5. Summary of key points Where do the boost, buck-boost,
More informationCHAPTER 2 GENERAL STUDY OF INTEGRATED SINGLE-STAGE POWER FACTOR CORRECTION CONVERTERS
CHAPTER 2 GENERAL STUDY OF INTEGRATED SINGLE-STAGE POWER FACTOR CORRECTION CONVERTERS 2.1 Introduction Conventional diode rectifiers have rich input harmonic current and cannot meet the IEC PFC regulation,
More informationR. W. Erickson. Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder
R. W. Erickson Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder 17.1 The single-phase full-wave rectifier i g i L L D 4 D 1 v g Z i C v R D 3 D 2 Full-wave rectifier
More informationDC Chopper. Prof. Dr. Fahmy El-khouly
DC Chopper Prof. Dr. Fahmy El-khouly Definitions: The power electronic circuit which converts directly from dc to dc is called dc-to-dc converter or dc-chopper. Chopper is a dc to dc transformer: The input
More informationTSTE25 Power Electronics. Lecture 6 Tomas Jonsson ISY/EKS
TSTE25 Power Electronics Lecture 6 Tomas Jonsson ISY/EKS 2016-11-15 2 Outline DC power supplies DC-DC Converter Step-down (buck) Step-up (boost) Other converter topologies (overview) Exercises 7-1, 7-2,
More informationAdvances in Averaged Switch Modeling
Advances in Averaged Switch Modeling Robert W. Erickson Power Electronics Group University of Colorado Boulder, Colorado USA 80309-0425 rwe@boulder.colorado.edu http://ece-www.colorado.edu/~pwrelect 1
More informationECEN4797/5797 Lecture #11
ECEN4797/5797 Lecture #11 Announcements On-campus students: pick up graded HW2, turn in HW3 Homework 4 is due in class on Friday, Sept. 23. The grace-period for offcampus students expires 5pm (Mountain)
More informationEE 486 Power Electronics Final Exam Coverage Prof. Ali Mehrizi-Sani
EE 486 Power Electronics Final Exam Coverage Prof. Ali Mehrizi-Sani mehrizi@eecs.wsu.edu School of Electrical Engineering and Computer Science April 26, 2012 Illusions 2 of 18 Final Exam Coverage All Material
More informationPulse-Width Modulated DC-DC Power Converters Second Edition
Pulse-Width Modulated DC-DC Power Converters Second Edition Marian K. Kazimierczuk Pulse-Width Modulated DC DC Power Converters Pulse-Width Modulated DC DC Power Converters Second Edition MARIAN K. KAZIMIERCZUK
More informationFundamentals of Power Electronics
Fundamentals of Power Electronics SECOND EDITION Robert W. Erickson Dragan Maksimovic University of Colorado Boulder, Colorado Preface 1 Introduction 1 1.1 Introduction to Power Processing 1 1.2 Several
More informationCHAPTER 3 APPLICATION OF THE CIRCUIT MODEL FOR PHOTOVOLTAIC ENERGY CONVERSION SYSTEM
63 CHAPTER 3 APPLICATION OF THE CIRCUIT MODEL FOR PHOTOVOLTAIC ENERGY CONVERSION SYSTEM 3.1 INTRODUCTION The power output of the PV module varies with the irradiation and the temperature and the output
More informationPower Management for Computer Systems. Prof. C Wang
ECE 5990 Power Management for Computer Systems Prof. C Wang Fall 2010 Course Outline Fundamental of Power Electronics cs for Computer Systems, Handheld Devices, Laptops, etc More emphasis in DC DC converter
More informationECE514 Power Electronics Converter Topologies. Part 2 [100 pts] Design of an RDC snubber for flyback converter
ECE514 Power Electronics Converter Topologies Homework Assignment #4 Due date October 31, 2014, beginning of the lecture Part 1 [100 pts] Redo Term Test 1 (attached) Part 2 [100 pts] Design of an RDC snubber
More informationHysteretic controlled DC-DC converters
Wright State University CORE Scholar Browse all Theses and Dissertations Theses and Dissertations 2014 Hysteretic controlled DC-DC converters Shweta Chauhan Wright State University Follow this and additional
More informationTwo Stage Interleaved Boost Converter Design and Simulation in CCM and DCM
Two Stage Interleaved Boost Converter Design and Simulation in CCM and DCM Ajit T N PG Student (MTech, Power Electronics) Department of Electrical and Electronics Engineering Reva Institute of Technology
More informationR. W. Erickson. Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder
R. W. Erickson Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder Inclusion of Switching Loss in the Averaged Equivalent Circuit Model The methods of Chapter 3 can
More informationDesign of a Non-Ideal Buck Converter
Design of a Non-Ideal Buck Converter Ali Saleh Aziz 1*, Riyadh Nazar Ali 2 1*Assistant Lecturer, Department of Medical Instruments Techniques Engineering, Al-Hussein University College, Karbala, Iraq.
More informationAssuming continuous conduction, the circuit has two topologies switch closed, and switch open. These are shown in Figures 2a and 2b. L i C.
EE46, Power Electronics, DC-DC Buck Converter Version Sept. 9, 011 Overview DC-DC converters provide efficient conversion of DC voltage from one level to another. Specifically, the term buck converter
More informationPublished in A R DIGITECH
DESIGN AND ANALYSIS OF DC-DC BOOST CONVERTER BY USING MATLAB SIMULINK Pund Sunil Kacharu*1,Vivek Kumar Yadav*2 *1(PG Scholar, Assistant Professor, RKDF Bhopal (M.P.)) Sunilpund25@gmail.com,ee.rkdf@gmail.com
More informationFinal Exam. Anyone caught copying or allowing someone to copy from them will be ejected from the exam.
Final Exam EECE 493-101 December 4, 2008 Instructor: Nathan Ozog Name: Student Number: Read all of the following information before starting the exam: The duration of this exam is 3 hours. Anyone caught
More informationAnalyzing The Effect Of Voltage Drops On The DC Transfer Function Of The Buck Converter
ISSUE: May 208 Analyzing The Effect Of oltage Drops On The DC Transfer Function Of The Buck Converter by Christophe Basso, ON Semiconductor, Toulouse, France Switching converters combine passive elements
More informationCONTENTS. Chapter 1. Introduction to Power Conversion 1. Basso_FM.qxd 11/20/07 8:39 PM Page v. Foreword xiii Preface xv Nomenclature
Basso_FM.qxd 11/20/07 8:39 PM Page v Foreword xiii Preface xv Nomenclature xvii Chapter 1. Introduction to Power Conversion 1 1.1. Do You Really Need to Simulate? / 1 1.2. What You Will Find in the Following
More informationTABLE OF CONTENTS CHAPTER NO. TITLE PAGE NO. LIST OF TABLES LIST OF FIGURES LIST OF SYMBOLS AND ABBREVIATIONS
vi TABLE OF CONTENTS CHAPTER NO. TITLE PAGE NO. ABSTRACT LIST OF TABLES LIST OF FIGURES LIST OF SYMBOLS AND ABBREVIATIONS iii x xi xvii 1 INTRODUCTION 1 1.1 INTRODUCTION 1 1.2 BACKGROUND 2 1.2.1 Types
More informationImprovement of SBC Circuit using MPPT Controller
Improvement of SBC Circuit using MPPT Controller NOR ZAIHAR YAHAYA & AHMAD AFIFI ZAMIR Electrical & Electronic Engineering Department Universiti Teknologi PETRONAS Bandar Seri Iskandar, 3750 Tronoh, Perak
More informationAND8291/D. >85% Efficient 12 to 5 VDC Buck Converter
>5% Efficient to 5 VDC Buck Converter Prepared by: DENNIS SOLLEY ON Semiconductor General Description This application note describes how the NCP363 can be configured as a buck controller to drive an external
More informationR. W. Erickson. Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder
R. W. Erickson Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder 18.5 RMS values of rectifier waveforms Doubly-modulated transistor current waveform, boost rectifier:
More informationImplementation of ZCS-ZVS Buck Converter Using in Voltage Mode Control with Coupled Inductor
Implementation of ZCS-ZVS Buck Converter Using in Voltage Mode Control with Coupled Inductor S.Sathyamoorthi 1, S.Sriram 2 Assistant Professor, Dept. of Electrical & Electronics Engineering, Sasurie College
More informationConventional Single-Switch Forward Converter Design
Maxim > Design Support > Technical Documents > Application Notes > Amplifier and Comparator Circuits > APP 3983 Maxim > Design Support > Technical Documents > Application Notes > Power-Supply Circuits
More information1. The current-doubler rectifier can be used to double the load capability of isolated dc dc converters with bipolar secondaryside
Highlights of the Chapter 4 1. The current-doubler rectifier can be used to double the load capability of isolated dc dc converters with bipolar secondaryside voltage. Some industry-generated papers recommend
More informationA Novel Concept in Integrating PFC and DC/DC Converters *
A Novel Concept in Integrating PFC and DC/DC Converters * Pit-Leong Wong and Fred C. Lee Center for Power Electronics Systems The Bradley Department of Electrical and Computer Engineering Virginia Polytechnic
More informationEEL 646 POWER ELECTRONICS II. Issa Batarseh. January 13, 2015
EEL 646 POWER ELECTRONICS II Issa Batarseh January 13, 2015 Agenda About the course Syllabus Review Course Topics Review of Power Electronics I Questions Introduction (cont d) Introduction (cont d) 5
More informationSIMULATIONS WITH THE BOOST TOPOLOGY EE562: POWER ELECTRONICS I COLORADO STATE UNIVERSITY. Modified February 2006
SIMULATIONS WITH THE BOOST TOPOLOGY EE562: POWER ELECTRONICS I COLORADO STATE UNIVERSITY Modified February 26 Page 1 of 24 PURPOSE: The purpose of this lab is to simulate the Boost converter using ORCAD
More informationCHAPTER 3 MAXIMUM POWER TRANSFER THEOREM BASED MPPT FOR STANDALONE PV SYSTEM
60 CHAPTER 3 MAXIMUM POWER TRANSFER THEOREM BASED MPPT FOR STANDALONE PV SYSTEM 3.1 INTRODUCTION Literature reports voluminous research to improve the PV power system efficiency through material development,
More informationDESIGN, SIMULATION AND IMPLEMENTATION OF A HIGH STEP-UP Z-SOURCE DC-DC CONVERTER WITH FLYBACK AND VOLTAGE MULTIPLIER. A Thesis ARASH TORKAN
DESIGN, SIMULATION AND IMPLEMENTATION OF A HIGH STEP-UP Z-SOURCE DC-DC CONVERTER WITH FLYBACK AND VOLTAGE MULTIPLIER A Thesis by ARASH TORKAN Submitted to the Office of Graduate and Professional Studies
More informationGENERALLY, a single-inductor, single-switch boost
IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 19, NO. 1, JANUARY 2004 169 New Two-Inductor Boost Converter With Auxiliary Transformer Yungtaek Jang, Senior Member, IEEE, Milan M. Jovanović, Fellow, IEEE
More informationMICROCONTROLLER BASED BOOST PID MUNAJAH BINTI MOHD RUBAEE
MICROCONTROLLER BASED BOOST PID MUNAJAH BINTI MOHD RUBAEE This thesis is submitted as partial fulfillment of the requirement for the award of Bachelor of Electrical Engineering (Power System) Faculty of
More informationCHAPTER 4 DESIGN OF CUK CONVERTER-BASED MPPT SYSTEM WITH VARIOUS CONTROL METHODS
68 CHAPTER 4 DESIGN OF CUK CONVERTER-BASED MPPT SYSTEM WITH VARIOUS CONTROL METHODS 4.1 INTRODUCTION The main objective of this research work is to implement and compare four control methods, i.e., PWM
More informationLecture 7: MOSFET, IGBT, and Switching Loss
Lecture 7: MOSFET, IGBT, and Switching Loss ECE 481: Power Electronics Prof. Daniel Costinett Department of Electrical Engineering and Computer Science University of Tennessee Knoxville Fall 2013 Announcements
More informationKeywords: No-opto flyback, synchronous flyback converter, peak current mode controller
Keywords: No-opto flyback, synchronous flyback converter, peak current mode controller APPLICATION NOTE 6394 HOW TO DESIGN A NO-OPTO FLYBACK CONVERTER WITH SECONDARY-SIDE SYNCHRONOUS RECTIFICATION By:
More information4.5V to 32V Input High Current LED Driver IC For Buck or Buck-Boost Topology CN5816. Features: SHDN COMP OVP CSP CSN
4.5V to 32V Input High Current LED Driver IC For Buck or Buck-Boost Topology CN5816 General Description: The CN5816 is a current mode fixed-frequency PWM controller for high current LED applications. The
More informationA Novel Transformer Less Interleaved Four Phase High Step Down Dc Converter
IOSR Journal of Engineering (IOSRJEN) ISSN (e): 2250-3021, ISSN (p): 2278-8719 PP 20-28 www.iosrjen.org A Novel Transformer Less Interleaved Four Phase High Step Down Dc Converter Soumia Johnson 1, Krishnakumar.
More informationLECTURE 4. Introduction to Power Electronics Circuit Topologies: The Big Three
1 LECTURE 4 Introduction to Power Electronics Circuit Topologies: The Big Three I. POWER ELECTRONICS CIRCUIT TOPOLOGIES A. OVERVIEW B. BUCK TOPOLOGY C. BOOST CIRCUIT D. BUCK - BOOST TOPOLOGY E. COMPARISION
More informationELEC387 Power electronics
ELEC387 Power electronics Jonathan Goldwasser 1 Power electronics systems pp.3 15 Main task: process and control flow of electric energy by supplying voltage and current in a form that is optimally suited
More informationDesign and Simulation of Synchronous Buck Converter for Microprocessor Applications
Design and Simulation of Synchronous Buck Converter for Microprocessor Applications Lakshmi M Shankreppagol 1 1 Department of EEE, SDMCET,Dharwad, India Abstract: The power requirements for the microprocessor
More informationR. W. Erickson. Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder
R. W. Erickson Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder pn junction! Junction diode consisting of! p-doped silicon! n-doped silicon! A p-n junction where
More informationTechcode. 1.6A 32V Synchronous Rectified Step-Down Converte TD1529. General Description. Features. Applications. Package Types DATASHEET
General Description Features The TD1529 is a monolithic synchronous buck regulator. The device integrates two 130mΩ MOSFETs, and provides 1.6A of continuous load current over a wide input voltage of 4.75V
More informationPrinciple Of Step-up Chopper
Principle Of Step-up Chopper L + D + V Chopper C L O A D V O 1 Step-up chopper is used to obtain a load voltage higher than the input voltage V. The values of L and C are chosen depending upon the requirement
More informationAustralian Journal of Basic and Applied Sciences. Design A Buck Boost Controller Analysis For Non-Idealization Effects
AENSI Journals Australian Journal of Basic and Applied Sciences ISSN:1991-8178 Journal home page: www.ajbasweb.com Design A Buck Boost Controller Analysis For Non-Idealization Effects Husham I. Hussein
More informationFig.1. A Block Diagram of dc-dc Converter System
ANALYSIS AND SIMULATION OF BUCK SWITCH MODE DC TO DC POWER REGULATOR G. C. Diyoke Department of Electrical and Electronics Engineering Michael Okpara University of Agriculture, Umudike Umuahia, Abia State
More informationA NOVEL SOFT-SWITCHING BUCK CONVERTER WITH COUPLED INDUCTOR
A NOVEL SOFT-SWITCHING BUCK CONVERTER WITH COUPLED INDUCTOR Josna Ann Joseph 1, S.Bella Rose 2 PG Scholar, Karpaga Vinayaga College of Engineering and Technology, Chennai 1 Professor, Karpaga Vinayaga
More informationDesigning and Implementing of 72V/150V Closed loop Boost Converter for Electoral Vehicle
International Journal of Current Engineering and Technology E-ISSN 77 4106, P-ISSN 347 5161 017 INPRESSCO, All Rights Reserved Available at http://inpressco.com/category/ijcet Research Article Designing
More informationIncorporating Active-Clamp Technology to Maximize Efficiency in Flyback and Forward Designs
Topic 2 Incorporating Active-Clamp Technology to Maximize Efficiency in Flyback and Forward Designs Bing Lu Agenda 1. Basic Operation of Flyback and Forward Converters 2. Active Clamp Operation and Benefits
More informationPERFORMANCE ANALYSIS OF 2D CONVERTER BY COMBINING SR & KY CONVERTERS
RESEARCH ARTICLE OPEN ACCESS PERFORMANCE ANALYSIS OF 2D CONVERTER BY COMBINING SR & KY CONVERTERS V. Manoj Kumar 1, G.V.S.S.N.S. Sarma 2 M. Tech (P.E), Dept. of EEE, Aurora s Engineering College, Bhongir,
More information6.334 Final Project Buck Converter
Nathan Monroe monroe@mit.edu 4/6/13 6.334 Final Project Buck Converter Design Input Filter Filter Capacitor - 40µF x 0µF Capstick CS6 film capacitors in parallel Filter Inductor - 10.08µH RM10/I-3F3-A630
More informationElements of Power Electronics PART II: Topologies and applications
Elements of Power Electronics PART II: Topologies and applications Fabrice Frébel (fabrice.frebel@ulg.ac.be) September 2 st, 207 PART II: Topologies and applications Chapter 6: Converter Circuits Applications
More informationChapter 3 : Closed Loop Current Mode DC\DC Boost Converter
Chapter 3 : Closed Loop Current Mode DC\DC Boost Converter 3.1 Introduction DC/DC Converter efficiently converts unregulated DC voltage to a regulated DC voltage with better efficiency and high power density.
More informationMOST electrical systems in the telecommunications field
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, VOL. 46, NO. 2, APRIL 1999 261 A Single-Stage Zero-Voltage Zero-Current-Switched Full-Bridge DC Power Supply with Extended Load Power Range Praveen K. Jain,
More informationChapter 1: Introduction
1.1. Introduction to power processing 1.2. Some applications of power electronics 1.3. Elements of power electronics Summary of the course 2 1.1 Introduction to Power Processing Power input Switching converter
More informationExperiment No.15 DC-DC Converters
Experiment No.15 DC-DC Converters Experiment aim The aim of Experiment is to analyze the operation (Switching) of DC-DC converter with resistive load. Apparatus 1. Power electronic trainer 2. Connection
More informationImprovements of LLC Resonant Converter
Chapter 5 Improvements of LLC Resonant Converter From previous chapter, the characteristic and design of LLC resonant converter were discussed. In this chapter, two improvements for LLC resonant converter
More information340KHz, 36V/2.5A Step-down Converter With Soft-Start
340KHz, 36V/2.5A Step-down Converter With Soft-Start General Description The contains an independent 340KHz constant frequency, current mode, PWM step-down converters. The converter integrates a main switch
More informationMP A, 15V, 800KHz Synchronous Buck Converter
The Future of Analog IC Technology TM TM MP0.5A, 5, 00KHz Synchronous Buck Converter DESCRIPTION The MP0 is a.5a, 00KHz synchronous buck converter designed for low voltage applications requiring high efficiency.
More informationPower Electronics in PV Systems
Introduction to Power Electronics in PV Systems EEN 2060 References: EEN4797/5797 Intro to Power Electronics ece.colorado.edu/~ecen5797 Textbook: R.W.Erickson, D.Maksimovic, Fundamentals of Power Electronics,
More informationAnalysis, Design and Development of a Single Switch Flyback Buck-Boost AC-DC Converter for Low Power Battery Charging Applications
318 Journal of Power Electronics, Vol. 7, No. 4, October 007 JPE 7-4-7 Analysis, Design and Development of a Single Switch Flyback Buck-Boost AC-DC Converter for Low Power Battery Charging Applications
More informationAnfis Based Soft Switched Dc-Dc Buck Converter with Coupled Inductor
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-issn: 2278-2834,p-ISSN: 2278-8735 PP 45-52 www.iosrjournals.org Anfis Based Soft Switched Dc-Dc Buck Converter with Coupled Inductor
More informationGetting the Most From Your Portable DC/DC Converter: How To Maximize Output Current For Buck And Boost Circuits
Getting the Most From Your Portable DC/DC Converter: How To Maximize Output Current For Buck And Boost Circuits Upal Sengupta, Texas nstruments ABSTRACT Portable product design requires that power supply
More informationCHAPTER 5 The Parallel Resonant Converter
CHAPTER 5 The Parallel Resonant Converter T he objective of this chapter is to describe the operation of the parallel resonant converter in detail. The concepts developed in chapter 3 are used to derive
More informationANP012. Contents. Application Note AP2004 Buck Controller
Contents 1. AP004 Specifications 1.1 Features 1. General Description 1. Pin Assignments 1.4 Pin Descriptions 1.5 Block Diagram 1.6 Absolute Maximum Ratings. Hardware.1 Introduction. Typical Application.
More informationPower Electronics (25) Please prepare your student ID card (with photo) on your desk for the attendance check.
Prof. Dr. Ing. Joachim Böcker Power Electronics 08.09.014 Surname: Student number: First name: Course of study: Task: (Points) 1 (5) (5) 3 (5) 4 (5) Total (100) Mark Duration: 10 minutes Permitted resources:
More informationAnalog and Telecommunication Electronics
Politecnico di Torino - ICT School Analog and Telecommunication Electronics G3 - Switching regulators» PWM regulators» Buck,» Boost,» Buck-boost» Flyback 30/05/2012-1 ATLCE - G3-2011 DDC Lesson G3: Switching
More informationPulse-Width Modulated DC-DC Power Converters Second Edition
Pulse-Width Modulated DC-DC Power Converters Second Edition Marian K. Kazimierczuk Pulse-Width Modulated DC DC Power Converters Pulse-Width Modulated DC DC Power Converters Second Edition MARIAN K. KAZIMIERCZUK
More information3.1 ignored. (a) (b) (c)
Problems 57 [2] [3] [4] S. Modeling, Analysis, and Design of Switching Converters, Ph.D. thesis, California Institute of Technology, November 1976. G. WESTER and R. D. MIDDLEBROOK, Low-Frequency Characterization
More information466 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 13, NO. 3, MAY A Single-Switch Flyback-Current-Fed DC DC Converter
466 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 13, NO. 3, MAY 1998 A Single-Switch Flyback-Current-Fed DC DC Converter Peter Mantovanelli Barbosa, Member, IEEE, and Ivo Barbi, Senior Member, IEEE Abstract
More informationEUP V/12V Synchronous Buck PWM Controller DESCRIPTION FEATURES APPLICATIONS. Typical Application Circuit. 1
5V/12V Synchronous Buck PWM Controller DESCRIPTION The is a high efficiency, fixed 300kHz frequency, voltage mode, synchronous PWM controller. The device drives two low cost N-channel MOSFETs and is designed
More informationECE1750, Spring Week 5 MOSFET Gate Drivers
ECE1750, Spring 2018 Week 5 MOSFET Gate Drivers 1 Power MOSFETs (a high-speed, voltage-controlled switch) D: Drain D If desired, a series blocking diode can be inserted here to prevent reverse current
More informationVishay Siliconix AN724 Designing A High-Frequency, Self-Resonant Reset Forward DC/DC For Telecom Using Si9118/9 PWM/PSM Controller.
AN724 Designing A High-Frequency, Self-Resonant Reset Forward DC/DC For Telecom Using Si9118/9 PWM/PSM Controller by Thong Huynh FEATURES Fixed Telecom Input Voltage Range: 30 V to 80 V 5-V Output Voltage,
More informationLecture 41 SIMPLE AVERAGING OVER T SW to ACHIEVE LOW FREQUENCY MODELS
Lecture 41 SIMPLE AVERAGING OVER T SW to ACHIEVE LOW FREQUENCY MODELS. Goals and Methodology to Get There 0. Goals 0. Methodology. BuckBoost and Other Converter Models 0. Overview of Methodology 0. Example
More informationExperiment DC-DC converter
POWER ELECTRONIC LAB Experiment-7-8-9 DC-DC converter Power Electronics Lab Ali Shafique, Ijhar Khan, Dr. Syed Abdul Rahman Kashif 10/11/2015 This manual needs to be completed before the mid-term examination.
More informationSwitched Inductor Quadratic Buck Converter
Switched Inductor Quadratic Buck Converter Rosemary Mathai 1, Sheela Joseph 2, Sini Paul 3 M.Tech Student 1, Professor 2, Associate Professor 3 rosemarymathai.mec@gmail.com Abstract A dc-dc converter featuring
More information3. PARALLELING TECHNIQUES. Chapter Three. high-power applications to achieve the desired output power with smaller size power
3. PARALLELING TECHNIQUES Chapter Three PARALLELING TECHNIQUES Paralleling of converter power modules is a well-known technique that is often used in high-power applications to achieve the desired output
More informationAN4501 Application note
Application note Design of a boost LED driver using L99LD01 Introduction The L99LD01 is a boost controller dedicated to the control of high-brightness LEDs in automotive headlight applications.the device
More informationCal Poly SuPER System Photovoltaic Array Universal DC-DC Step Down Converter
Cal Poly SuPER System Photovoltaic Array Universal DC-DC Step Down Converter A Thesis Presented to the Faculty of California Polytechnic State University, San Luis Obispo In Partial Fulfillment of the
More informationImpact of inductor current ringing in DCM on output voltage of DC-DC buck power converters
ARCHIVES OF ELECTRICAL ENGINEERING VOL. 66(2), pp. 313-323 (2017) DOI 10.1515/aee-2017-0023 Impact of inductor current ringing in DCM on output voltage of DC-DC buck power converters MARCIN WALCZAK Department
More informationA New Averaged Switch Model Including Conduction Losses for PWM Converters Operating in Discontinuous Inductor Current Mode
FACTA UNIVERSITATIS (NIŠ) SER.: ELEC. ENERG. vol. 19, no. 2, August 2006, 219-230 A New Averaged Switch Model Including Conduction Losses for PWM Converters Operating in Discontinuous Inductor Current
More informationIntroduction to Modeling of Switched Mode Power Converters Using MATLAB and Simulink
Introduction to Modeling of Switched Mode Power Converters Using MATLAB and Simulink Extensive introductory tutorials for MATLAB and Simulink, including Control Systems Toolbox and Simulink Control Design
More information4 Experiment 3: DC to DC Converters
4 Experiment 3: DC to DC Converters 4.1 Purpose and Goals In this experiment the student will study DC-DC converters and their applications. It will introduce the use of PWM ( Pulse Width Modulation )
More informationDesigning A High-Frequency, Higher-Power Buck/Boost Converter for Multi-Cell Input Configurations Using Si9168
AN79 Designing A High-Frequency, Higher-Power Buck/Boost Converter for Multi-Cell Input Configurations Using Si968 Nitin Kalje The Si968 is a high-frequency synchronous dc-to-dc controller designed for
More informationThe Flyback Converter
The Flyback Converter Course Project Power Electronics Design and Implementation Report by Kamran Ali 13100174 Muhammad Asad Lodhi 13100175 Ovais bin Usman 13100026 Syed Bilal Ali 13100026 Advisor Nauman
More informationA Novel Step Down Auxiliary Power Supply employed in a Micro Drive for a Three Phase Tesla Induction Motor
A Novel Step own Auxiliary Power Supply employed in a Micro rive for a Three Phase Tesla nduction Motor Petar J. Grbovic, Schneider Toshiba nverters - PL Electronic Ltd, R& 8 Austin Street, Napier, New
More informationRECENTLY, newly emerging power-electronics applications
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I: REGULAR PAPERS, VOL. 54, NO. 8, AUGUST 2007 1809 Nonisolation Soft-Switching Buck Converter With Tapped-Inductor for Wide-Input Extreme Step-Down Applications
More informationModeling The Effects of Leakage Inductance On Flyback Converters (Part 2): The Average Model
ISSUE: December 2015 Modeling The Effects of Leakage Inductance On Flyback Converters (Part 2): The Average Model by Christophe Basso, ON Semiconductor, Toulouse, France In the first part of this article,
More informationA Novel Technique to Reduce the Switching Losses in a Synchronous Buck Converter
A Novel Technique to Reduce the Switching Losses in a Synchronous Buck Converter A. K. Panda and Aroul. K Abstract--This paper proposes a zero-voltage transition (ZVT) PWM synchronous buck converter, which
More information55:141 Advanced Circuit Techniques Switching Regulators
55:141 Advanced Circuit Techniques Switching Regulators Material: ecture Notes, Handouts, and Sections of Chapter 11 of Franco A. Kruger 55:141: Advanced Circuit Techniques The University of Iowa Switching
More informationi L1 I in Leave the 10µF cap across the input terminals Figure 1. DC-DC SEPIC Converter
EE46L, Power Electronics, DC-DC SEPIC Converter Version March 1, 01 Overview SEPIC converters make it possible to eiciently convert a DC voltage to either a lower or higher voltage. SEPIC converters are
More information