ECE514 Power Electronics Converter Topologies. Part 2 [100 pts] Design of an RDC snubber for flyback converter
|
|
- Imogen Mildred Smith
- 6 years ago
- Views:
Transcription
1 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 for flyback converter Your task is to design a minimum- volume minimum- power snubber for the flyback converter. The converter is designed to operate in CCM at 200 khz, for the input voltage of 200 V, Vout = 12 V, and the output power of 30 W. Data sheets of the flyback transformer and the power switch are given on the course web site. a) For the case when the 140 : 6 transformer ratio is used, i) draw equivalent circuit of the converter that includes primary side leakage inductance of the transformer Lleak and the output capacitance of the transistor Cdc. ii) In your diagram clearly label values of Lm, Lleak and Cds. b) i) Draw approximate voltage and current waveforms of the transistor and; ii) clearly label: peak inductor current and frequency of the oscillation during turn- off transition c) Now, add an RDC snubber to your circuit (draw it on your diagram) and select the snubber capacitor and its resistor such that: a. The maximum voltage stress across transistor does not exceed 90% of its maximum allowable value (for the transistor with the worst tolerance) b. The variation of the output capacitor voltage does not exceed 10% of its maximum value c. In your diagrams, clearly label the values of the snubber components and calculate power lost on the snubber.
2 Extra Credit Problems EC 1: For the converter operating without snubber, find expressions for accurate current and voltage waveforms of the transistor after its turn off transient and draw the same. Clearly label: peak voltage and current values, frequency of oscillations, and decay slope of the oscillations (in your calculations you can assume that the resistance of your equivalent circuit is only affected by the dc resistances of the transformer windings). EC 2: Now, assume, that the converter operates in DCM, i) find expressions for accurate current and voltage waveforms of the transistor after the soft turn off the flyback diode and draw your results. Clearly label: peak voltage and current values, frequency of oscillations, and decay slope of the amplitude of oscillations (in your calculations you can assume that the resistance of your equivalent circuit is only affected by the dc resistances of the transformer windings) Note for both EC problems: To calculate the peak values, you can assume that, for the first oscillation cycle only, equivalent resistances have no effect on the amplitude of the waveforms.
3 Term test 1 Redo Problem 1: The converter of Fig.1 operates in the continuous conduction mode. It operates such that during the first portion of a switching interval 0< t DTs the transistor Q is turned on and the diode D is turned off. During the second portion of the interval Ts = 1/fsw the diode conducts and Q is turned off. The magnetizing inductance Lm is very large and not used for energy transfer. You can also assume that the capacitor values are very large, i.e. that their ripples are negligible. Figure 1 a)[9 pts] i) Draw equivalent circuit of the converter for the both portions of the switching interval Ts. You can neglect all the losses except the forward voltage drop across the diode, VF. ii) ifor the both intervals, also write expressions for the inductor voltages and capacitor currents. b)[10 pts] From the obtained equivalent circuits find expressions for the capacitors voltages, inductor currents, dc conversion ratio M(D)= V/Vg, and the converter efficiency. All expressions should be written in terms of Vg, VF, D, ns/np, and R. c) i)[16 pts] For Vg = 150 V, VF = 0.6 V, and Vout =20 V, fsw= 200kH, select ns/np, L2, and D, such that: 1) the converter operates in CCM for 0.5 A < Iload < 6 A, 2) the maximum voltage at any point of the secondary circuit does not exceed 48V (maximum allowable safety level). ii)[5 pts] Select the inductance L1 value such that its peak-to-peak ripple amplitude is no larger than 20% of the maximum dc current value. iii)[15 pts] For a 50% load (3A) and your design from the previous parts, draw the current and voltage waveforms, clearly label the minimum and maximum values of the voltages and currents. iv) 5 pts] Calculate efficiency of the converter for the 50% of the load, i.e. for Iload = 3 A. How does it change with the load current? Explain your answer.
4
5 Problem 2: Your task is to design a flyback converter operating at the boundary between continuous conduction and discontinuous conduction for a wide range of input voltages. To maintain operation at the boundary, the transistor ton time is varied as the input voltage changes, meaning that the switching frequency is varied as well. Figure 2. a) [9 pts] Draw equivalent circuit of the converter for three portions of the switching interval when the converter operates in the discontinuous conduction mode. b) [11 pts] Using the DCM analysis, find the expression for Vout/Vg in terms of Lm, ton, R, and the converter switching frequency fsw, when the converter operates at the boundary between CCM and DCM. For this part, you might want to use the provided diagrams.
6 c) [10 pts] For 120 < Vg < 366 V, Vout = 20 V, and 0.5A < Iload < 2A, find Lm, n, and range of ton values, such that: i) the voltage on the secondary side does not exceed 48 V, switching frequency of the converter is always larger than 20 khz (above the audio range). d) [10 pts] Using the values from the previous parts, draw voltage and current waveforms for Vg = 150 V, Pout = 20 W. Clearly label the values of maximum and minimum voltages and currents as well as of ton and Ts times.
R. 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 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 informationWide ouput range power supply
Wide ouput range power supply Armond Gauthier Pierre Yves Droz I Introduction I Goal / Constraints of the project Offline power supply. Constraints: - cheap - wide output range application : Power supply
More informationDoing More with Buck Regulator ICs
White Paper Doing More with Buck Regulator ICs Lokesh Duraiappah, Renesas Electronics Corp. June 2018 Introduction One of the most popular switching regulator topologies is the buck or step-down converter.
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 informationLecture 6 ECEN 4517/5517
Lecture 6 ECEN 4517/5517 Experiment 4: inverter system Battery 12 VDC HVDC: 120-200 VDC DC-DC converter Isolated flyback DC-AC inverter H-bridge v ac AC load 120 Vrms 60 Hz d d Feedback controller V ref
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 informationI. Erickson Problem 6.4 A DCM Two Transistor Flyback Converter
Lecture 15 The Forward PWM Converter Circuit Topology and Illustrative Examples 1 I Erickson Problem 64 A DCM Two Transistor Flyback Converter II Forward Converter A Overview B Forward Converter with a
More informationExclusive Technology Feature
ISSUE: February 2011 Primary-Side Current Monitoring Won t Stop Overcurrents In DCM-Operated Flybacks by John Bottrill, Senior Applications Engineer, and Lisa Dinwoodie, Applications Engineer, Power Management,
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 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 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 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 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 informationEPC2201 Power Electronic Devices Tutorial Sheet
EPC2201 Power Electronic Devices Tutorial heet 1. The ON state forward voltage drop of the controlled static switch in Figure 1 is 2V. Its forward leakage current in the state is 2mA. It is operated with
More informationChapter 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 informationI DT. Power factor improvement using DCM Cuk converter with coupled inductor. -7- I Fig. 1 Cuk converter
Power factor improvement using DCM Cuk converter with coupled inductor G. Ranganathan L. Umanand Abstract: Most of the power factor regulator topologies in continuous conduction mode result in bulky magnetics,
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 2 Buck PWM DC DC Converter
Chapter 2 Buck PWM DC DC Converter H. Wang, Power Management and High-speed I/O in CMOS Systems 1/25 Buck Circuit and Its equivalent circuits CCM: continuous conduction mode DCM: discontinuous conduction
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 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 informationEE155/255 F16 Midterm
EE155/255 F16 Midterm Name: (please print) In recognition of and in the spirit of the Stanford University Honor Code, I certify that I will neither give nor receive unpermitted aid on this exam. Signature:
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 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 informationLecture 4 ECEN 4517/5517
Lecture 4 ECEN 4517/5517 Experiment 3 weeks 2 and 3: interleaved flyback and feedback loop Battery 12 VDC HVDC: 120-200 VDC DC-DC converter Isolated flyback DC-AC inverter H-bridge v ac AC load 120 Vrms
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 informationSIMULATION WITH THE BOOST TOPOLOGY ECE562: Power Electronics I COLORADO STATE UNIVERSITY. Modified in Fall 2011
SIMULATION WITH THE BOOST TOPOLOGY ECE562: Power Electronics I COLORADO STATE UNIVERSITY Modified in Fall 2011 ECE 562 Boost Converter (NL5 Simulation) Laboratory 2 Page 1 PURPOSE: The purpose of this
More informationPresentation Content Review of Active Clamp and Reset Technique in Single-Ended Forward Converters Design Material/Tools Design procedure and concern
Active Clamp Forward Converters Design Using UCC2897 Hong Huang August 2007 1 Presentation Content Review of Active Clamp and Reset Technique in Single-Ended Forward Converters Design Material/Tools Design
More informationSingle Stage Offline LED Driver
Single Stage Offline LED Driver Jianwen Shao STMicroelectronics 375 E.Woodfield Rd., Suite 400 Schaumburg, IL 6073 Phone: 847-585-302 Jianwen.shao@st.com Abstract: A non-isolated soft-switched high power
More informationAND8125/D. Evaluating the Power Capability of NCP101X Members APPLICATION NOTE
Evaluating the Power Capability of NCP101X Members Prepared by: Christophe Basso ON Semiconductor APPLICATION NOTE The NCP101X series is available in various combinations of peak current and switching
More informationInterleaved PFC technology bring up low ripple and high efficiency
Interleaved PFC technology bring up low ripple and high efficiency Tony Huang 黄福恩 Texas Instrument Sept 12,2007 1 Presentation Outline Introduction to Interleaved transition mode PFC Comparison to single-channel
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 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 informationSINGLE-STAGE HIGH-POWER-FACTOR SELF-OSCILLATING ELECTRONIC BALLAST FOR FLUORESCENT LAMPS WITH SOFT START
SINGLE-STAGE HIGH-POWER-FACTOR SELF-OSCILLATING ELECTRONIC BALLAST FOR FLUORESCENT S WITH SOFT START Abstract: In this paper a new solution to implement and control a single-stage electronic ballast based
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 informationHigh-Efficiency Forward Transformer Reset Scheme Utilizes Integrated DC-DC Switcher IC Function
High-Efficiency Forward Transformer Reset Scheme Utilizes Integrated DC-DC Switcher IC Function Author: Tiziano Pastore Power Integrations GmbH Germany Abstract: This paper discusses a simple high-efficiency
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 informationDifferential-Mode Emissions
Differential-Mode Emissions In Fig. 13-5, the primary purpose of the capacitor C F, however, is to filter the full-wave rectified ac line voltage. The filter capacitor is therefore a large-value, high-voltage
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 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 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 informationCHAPTER 3 DC-DC CONVERTER TOPOLOGIES
47 CHAPTER 3 DC-DC CONVERTER TOPOLOGIES 3.1 INTRODUCTION In recent decades, much research efforts are directed towards finding an isolated DC-DC converter with high volumetric power density, low electro
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 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 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 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 informationTransformers for Offline Flyback Converters
Transformers for Offline Flyback Converters WHITE PAPER ABSTRACT This paper examines the design of a Bourns Model flyback transformer for a low power offline converter which could be used in applications
More informationEfficiency Optimization in Digitally Controlled Flyback DC-DC Converters Over Wide Ranges of Operating Conditions
University of Colorado, Boulder CU Scholar Electrical, Computer & Energy Engineering Graduate Theses & Dissertations Electrical, Computer & Energy Engineering Spring 1-1-2011 Efficiency Optimization in
More informationPower Electronics Day 5 Dc-dc Converters; Classical Rectifiers
Power Electronics Day 5 Dc-dc Converters; Classical Rectifiers P. T. Krein Department of Electrical and Computer Engineering University of Illinois at Urbana-Champaign 2011 Philip T. Krein. All rights
More information7.2 SEPIC Buck-Boost Converters
Boost-Buck Converter 131 5. The length of the trace from GATE output of the HV9930 to the GATE of the MOSFET should be as small as possible, with the source of the MOSFET and the GND of the HV9930 being
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 informationCHAPTER 3. SINGLE-STAGE PFC TOPOLOGY GENERALIZATION AND VARIATIONS
CHAPTER 3. SINGLE-STAGE PFC TOPOLOG GENERALIATION AND VARIATIONS 3.1. INTRODUCTION The original DCM S 2 PFC topology offers a simple integration of the DCM boost rectifier and the PWM DC/DC converter.
More informationA DC DC Boost Converter for Photovoltaic Application
International Journal of Engineering Research and Development e-issn: 2278-067X, p-issn: 2278-800X, Volume 8, Issue 8 (September 2013), PP. 47-52 A DC DC Boost Converter for Photovoltaic Application G.kranthi
More informationIN MODERN low-power applications such as mobile devices,
970 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 28, NO. 2, FEBRUARY 2013 Mixed-Signal-Controlled Flyback-Transformer- Based Buck Converter With Improved Dynamic Performance and Transient Energy Recycling
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 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 informationU6115S&D. Features. Description. Package Information. Applications. Pin Configuration
Description U6115 is a low cost and high performance Primary Side Regulation (PSR) controller for offline small power converter applications which can provide very tight output voltage regulation (CV)
More informationAT2596 3A Step Down Voltage Switching Regulators
FEATURES Standard PSOP-8/TO-220-5L /TO-263-5L Package Adjustable Output Versions Adjustable Version Output Voltage Range 1.23V to 37V V OUT Accuracy is to ± 3% Under Specified Input Voltage the Output
More informationZero Voltage Switching In Practical Active Clamp Forward Converter
Zero Voltage Switching In Practical Active Clamp Forward Converter Laishram Ritu VTU; POWER ELECTRONICS; India ABSTRACT In this paper; zero voltage switching in active clamp forward converter is investigated.
More informationLeMeniz Infotech. 36, 100 Feet Road, Natesan Nagar, Near Indira Gandhi Statue, Pondicherry Call: , ,
Analysis of the Interleaved Isolated Boost Converter with Coupled Inductors Abstract Introduction: A configuration with many parallel-connected boostflyback converters sharing a single active clamp has
More informationCHAPTER 2 A SERIES PARALLEL RESONANT CONVERTER WITH OPEN LOOP CONTROL
14 CHAPTER 2 A SERIES PARALLEL RESONANT CONVERTER WITH OPEN LOOP CONTROL 2.1 INTRODUCTION Power electronics devices have many advantages over the traditional power devices in many aspects such as converting
More informationUnder the Hood of Flyback SMPS Designs
Topic 1 Under the Hood of Flyback SMPS Designs Bing Lu Agenda 1. Basics of Flyback Topology 2. Impact of Transformer Design on Power Supply Performance 3. Power Supply Current Limiting 4. Summary Texas
More informationA Merged Interleaved Flyback PFC Converter with Active Clamp and ZVZCS
A Merged Interleaved Flyback PFC Converter with Active Clamp and ZVZCS Mehdi Alimadadi, William Dunford Department of Electrical and Computer Engineering University of British Columbia (UBC), Vancouver,
More informationThe Application Note of AP3968/69/70. (Not open yet-bcd semi)
The of AP3968/69/70 (Not open yet-bcd semi) 1. ntroduction The AP3968/69/70 series of power switcher circuits consist of a primary side regulation controller and a high voltage transistor, and is specially
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 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 informationD1 GS SS12 AIC AIC AIC AIC VOUT GND. One Cell Step-Up DC/DC Converter
1-Cell, 3-Pin, Step-Up DC/DC Converter FEATURES A Guaranteed Start-Up from less than 0.9 V. High Efficiency. Low Quiescent Current. Less Number of External Components needed. Low Ripple and Low Noise.
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 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 informationTopologies for Optimizing Efficiency, EMC and Time to Market
LED Power Supply Topologies Topologies for Optimizing Efficiency, EMC and Time to Market El. Ing. Tobias Hofer studied electrical engineering at the ZBW St. Gallen. He has been working for Negal Engineering
More informationZSLS7031 Application Note - Typical LED Driver Application Using Flyback Topology Contents
ZSLS7031 Application Note - Typical LED Driver Application Using Flyback Topology Contents 1 Introduction... 2 2 Dimensioning the Flyback Transformer... 3 2.1 Winding Ratio and Flyback Voltage... 3 2.2
More informationVoltage Gain Enhancement Using Ky Converter
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE) e-issn: 2278-1676,p-ISSN: 2320-3331, PP 27-34 www.iosrjournals.org Voltage Gain Enhancement Using Ky Converter Meera R Nair 1, Ms. Priya
More informationMP6004 Primary-Side Regulated Flyback/Buck 80V DCDC Converter
The Future of Analog IC Technology MP6004 Primary-Side Regulated Flyback/Buck 80V DCDC Converter DESCRIPTION The MP6004 is a monolithic flyback dc-dc converter with a 180 V power switch that targets isolated
More informationSingle switch three-phase ac to dc converter with reduced voltage stress and current total harmonic distortion
Published in IET Power Electronics Received on 18th May 2013 Revised on 11th September 2013 Accepted on 17th October 2013 ISSN 1755-4535 Single switch three-phase ac to dc converter with reduced voltage
More informationMagnetics. Selection guide for a coupled inductor used in Sepic DC/DC Converter. Application Note. BI Technologies
Selection guide for a coupled inductor used in Sepic DC/DC Converter. The most popular DC/DC Converter topology used on the led drivers in automotive industry is SEPIC topology (single ended primary inductance
More informationENGR4300 Test 3A Fall 2002
1. 555 Timer (20 points) Figure 1: 555 Timer Circuit For the 555 timer circuit in Figure 1, find the following values for R1 = 1K, R2 = 2K, C1 = 0.1uF. Show all work. a) (4 points) T1: b) (4 points) T2:
More informationAT7450 2A-60V LED Step-Down Converter
FEATURES DESCRIPTION IN Max = 60 FB = 200m Frequency 52kHz I LED Max 2A On/Off input may be used for the Analog Dimming Thermal protection Cycle-by-cycle current limit I LOAD max =2A OUT from 0.2 to 55
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 informationChapter 6 Soft-Switching dc-dc Converters Outlines
Chapter 6 Soft-Switching dc-dc Converters Outlines Classification of soft-switching resonant converters Advantages and disadvantages of ZCS and ZVS Zero-current switching topologies The resonant switch
More informationSimulation Comparison of Resonant Reset Forward Converter with Auxiliary Winding Reset Forward Converter
Simulation Comparison of Resonant Reset Forward Converter with Auxiliary Winding Reset Forward Converter Santosh B L 1, Dr.P.Selvan M.E. 2 1 M.E.(PED),ESCE Perundurai, (India) 2 Ph.D,Dept. of EEE, ESCE,
More informationAN TEA1836XT GreenChip SMPS control IC. Document information
Rev. 1 18 April 2014 Application note Document information Info Keywords Abstract Content TEA1836XT, DCM flyback converter, high efficiency, burst mode operation, low audible noise, high peak power, active
More informationLECTURE 3 How is Power Electronics Accomplished:
1 LECTURE 3 How is Power Electronics Accomplished: I. General Power Electronics System A. Overview B. Open Loop No Feedback Case C. Feedback Case and Major Issues D. Duty Cycle VARATION as a Control Means
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 informationOverview The LA5735MC is a separately-excited step-down switching regulator (variable type).
Ordering number : ENA2022 Monolithic Linear IC Separately-Excited Step-Down Switching Regulator (Variable Type) http://onsemi.com Overview The is a separately-excited step-down switching regulator (variable
More information20.25W Offline Flyback Converter Using MAX17595
0.5W Offline Flyback Converter Using MAX7595 MAXREFDES06 Introduction The MAX7595 is a peak-current-mode controller for designing wide input-voltage flyback regulators. The MAX7595 offers optimized input
More informationWS2596B High Efficiency Charger Control IC
WS2596B High Efficiency Charger Control IC Features Standby power
More informationLecture (04) PN Diode applications II
Lecture (04) PN Diode applications II By: Dr. Ahmed ElShafee ١ Agenda Full wave rectifier, cont.,.. Filters Voltage Regulators ٢ RMS The RMS value of a set of values (or a continuous time waveform) is
More informationDesign And Analysis Of Dc-Dc Converter For Photovoltaic (PV) Applications.
IOSR Journal of Engineering (IOSRJEN) ISSN (e): 2250-3021, ISSN (p): 2278-8719 PP 53-60 www.iosrjen.org Design And Analysis Of Dc-Dc Converter For Photovoltaic (PV) Applications. Sangeetha U G 1 (PG Scholar,
More informationIN A CONTINUING effort to decrease power consumption
184 IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 14, NO. 1, JANUARY 1999 Forward-Flyback Converter with Current-Doubler Rectifier: Analysis, Design, and Evaluation Results Laszlo Huber, Member, IEEE, and
More informationA Comparison between Different Snubbers for Flyback Converters
Western University Scholarship@Western Electronic Thesis and Dissertation Repository January 2018 A Comparison between Different Snubbers for Flyback Converters Adel Alganidi The University of Western
More informationQuestions about Circuit Functionality. Fall 2004 Question 5 -- Transformers (15 points)
Questions about Circuit Functionality Fall 2004 Question 5 -- Transformers (15 points) Below is a circuit containing a transformer and an op-amp circuit you should recognize from the homework and experiment
More informationChapter 4 SOFT SWITCHED PUSH-PULL CONVERTER WITH OUTPUT VOLTAGE DOUBLER
61 Chapter 4 SOFT SWITCHED PUSH-PULL CONVERTER WITH OUTPUT VOLTAGE DOUBLER S.No. Name of the Sub-Title Page No. 4.1 Introduction 62 4.2 Single output primary ZVS push-pull Converter 62 4.3 Multi-Output
More informationTesting and Stabilizing Feedback Loops in Today s Power Supplies
Keywords Venable, frequency response analyzer, impedance, injection transformer, oscillator, feedback loop, Bode Plot, power supply design, open loop transfer function, voltage loop gain, error amplifier,
More informationGenerating Isolated Supplies for Industrial Applications Using the SiC462 in an Isolated Buck Topology
VISHAY SILICONIX www.vishay.com ICs By Ron Vinsant INTRODUCTION Industrial power applications typically require a high input voltage. Standard voltage rails are 4 V, 36 V, and 48 V. The DC/DC step-down
More informationA Comparison of the Ladder and Full-Order Magnetic Models
A Comparison of the Ladder and Full-Order Magnetic Models Kusumal Changtong Robert W. Erickson Dragan Maksimovic Colorado Power Electronics Center University of Colorado Boulder, Colorado 839-45 changton@ucsu.colorado.edu
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 informationStudent Department of EEE (M.E-PED), 2 Assitant Professor of EEE Selvam College of Technology Namakkal, India
Design and Development of Single Phase Bridgeless Three Stage Interleaved Boost Converter with Fuzzy Logic Control System M.Pradeep kumar 1, M.Ramesh kannan 2 1 Student Department of EEE (M.E-PED), 2 Assitant
More informationAnalysis and Simulation of Full-Bridge Boost Converter using Matlab
64 Analysis and Simulation of Full-Bridge Boost Converter using Matlab O. Alavi, and S. Dolatabadi Abstract Improvement of high power and high performance applications causes attention to the DC-DC converter
More informationA Color LED Driver Implemented by the Active Clamp Forward Converter
A Color LED Driver Implemented by the Active Clamp Forward Converter C. H. Chang, H. L. Cheng, C. A. Cheng, E. C. Chang * Power Electronics Laboratory, Department of Electrical Engineering I-Shou University,
More information