Mode Choke Improves Efficiency and Reduces Cost. John Gallagher Staff Field Applications Engineer Pulse Electronics
|
|
|
- Brice Knight
- 7 years ago
- Views:
Transcription
1 Integrated Common Mode and Differential Mode Choke Improves Efficiency and Reduces Cost John Gallagher Staff Field Applications Engineer Pulse Electronics
2 Conducted Noise Power Supply Source Load Earth Ground Differential Mode Noise: Conducted on the line and neutral in opposite directions Common Mode Noise: Conducted on both line and neutral in the same direction. Each type of noise requires a different filter solution
3 Differential Mode Filter DM Inductor Power Supply Source Load Earth Ground The simplest DM Filter involves the placement of a single winding inductor in the line path and a capacitor from line to neutral. Effectively blocking noise from moving through the system The DM inductor (because it is in the line path) sees both the noise and a net DC offset due to the The DM inductor (because it is in the line path) sees both the noise and a net DC offset due to the current being supplied to load so the inductor must be able to handle the peak currents without saturating
4 Differential Mode Inductor Physical Model Reluctance Model I line N*I line Req Flux (I) = N * I line / Req Req = le / (perm * A e ) Design must provide required inductance/impedance with low enough resistance (DCR) to handle rms current and adequate saturation to handle peak line current Flux (I) = perm * N * I line * A e / l e Inductance (L) = N * Flux(I) / I line = N 2 * perm * A e / l e Typical design is with powdered iron core or gapped ferrite core Therefore Flux(I) = L * I line / N Or Flux Density (B pk ) = L * I line / (N * A e ) Design Example: Require a 350uH, 2A differential mode choke. Use 75 perm powdered iron, OD=0.8 with 54T of 23GA wire Ind = 350uH, DCR=180mOhms (PowerLoss = 720mW) and size is 23.0 x 23.0 x 9.0 mm (4.76cm3)
5 Common Mode Filter DM Inductor CM Inductor Capacitors Power Supply Source Load Earth Ground The simplest CM Filter involves the placement of a dual winding magnetic in the line and neutral path and a capacitor from line to ground. Effectively blocking noise from moving through the system The currents (line and neutral) pass through the CM magnetic in opposite directions and therefore create no net DC flux and no possibility of saturating the CM magnetic core.
6 Common Mode Inductor I line Physical Model Reluctance Model N*I line Req N*I neutral I neutral Design only needs to provide the required inductance / impedance with low enough resistance (DCR) to handle rms current. No saturation issues. Typical design is with an ungapped 5-10K perm ferrite core Flux (I) = N * I line / Req N * I neutral / Req = 0 (no net dc flux in CM) * So the line/neutral see no impedance However, the CM noise signal enters the component from the same direction and sees an inductance of: Inductance (L) = N 2 * perm * A e / l e Design Example: Require a 1.60mH, 2A common mode choke. Use 5K perm ferrite core, OD=0.6 with 25T of 26GA wire per winding Ind = 1.6mH per side, DCR=65mOhms (PowerLoss =520mW) and size is 19.0x19.0x8.0 mm (2.89cm3)
7 Integrated CM and DM Inductor The two separate magnetics in the EMI filter account for 1.24W of loss, 8.9cm2 of PCB space and take up 7.65cm3. Goal is to combine the DM and CM filter into a single component. CM Inductor DM Inductor Power Supply Source DM Inductor Load Earth Ground Combining the DM and CM has the potential benefits of reducing losses, board space, volume and cost but careful design must be done to ensure that the component does not saturate
8 Integrated CM and DM Inductor Although not shown previously any real mutual wound magnetic (CM chokes, Transformers) will have some amount of leakage inductance (uncoupled flux) which effects the coupling of the magnetic. I line CM w/lk Physical Model CM w/lk Reluctance Model 1 R R 3 N*I line Rc 4 2 N*I neutral I neutral CM Equivalent Schematics L k 1 3 L k Lk CM Inductor 1 4 L m Lk
9 Integrated CM and DM Inductor The integrated CM and DM Inductor is almost identical in terms of reluctance model and equivalent schematic to the 2- phase coupled inductor sometimes used in dual phase voltage regulators Designing Coupled Inductors, By John Gallagher, Power Electronics Technology, April 2006
10 Integrated CM and DM Inductor It is now possible to design the static ti values: DM Inductance = 2 * Lk = 2 * N 2 / (R + 2 * Rc) CM Inductance = Lm = N 2 * Rc / (2*R*Rc + Rc 2 ) But need to determine flux to check saturation Reluctance Model resembles electrical circuit used in Millman s Theorem so; Assume, coupling of p = Lm/Lk Check: If coupling is very good (Lk approaches zero) then dc flux goes to zero and no saturation (same as CM) If coupling is very bad (Lm approaches zero) then dc flux approaches Lk/N*I (same as DM) How does the CMDM compare with separate components?
11 CM and DM Inductor Example Previously showed a DM Choke (350uH, 2A) and a CM Choke (1.6mH,2A) DM Choke: Copper Loss = 720mW, Volume = 4.76cm3, Footprint = 5.29cm2 CM Choke: Copper Loss = 520mW, Volume = 2.89cm3, Footprint = 3.61cm2 Total : = 1240mW, = 7.65cm3 = 8.90cm2 Pulse CMDM 2 * Lk = DM Inductance = 350uH and capable of supporting 2.2A Lm = CM Inductance = 1.6mH DCR (per winding) = 110mOhms Size: 25 x 20 x 12 mm CMDM Choke: Copper Loss = 880mW, Volume = 6.00cm3, Footprint = 5.0cm2 CMDM Choke reduces: Power Loss by 30% Component Volume by 22% Component Board Area by 44% Component Cost by 21%
Renco Electronics, Inc.
Abstract As high tech electronic products and their power supplies continue to shrink in size the peak current handling capability of power inductors should be looked at closely by the design engineer.
UNDERSTANDING AND CONTROLLING COMMON-MODE EMISSIONS IN HIGH-POWER ELECTRONICS
Page 1 UNDERSTANDING AND CONTROLLING COMMON-MODE EMISSIONS IN HIGH-POWER ELECTRONICS By Henry Ott Consultants Livingston, NJ 07039 (973) 992-1793 www.hottconsultants.com hott@ieee.org Page 2 THE BASIC
Iron Powder Cores for Switchmode Power Supply Inductors. by: Jim Cox
HOME APPLICATION NOTES Iron Powder Cores for Switchmode Power Supply Inductors by: Jim Cox Purpose: The purpose of this application note is to cover the properties of iron powder as a magnetic core material
Understanding SMD Power Inductors. Application Note. July 2011
Understanding SMD Power Inductors July 2011 Application Note Power inductors play an important role in voltage conversion applications by yielding lower core losses. They are also used to store energy,
Selecting IHLP Composite Inductors for Non-Isolated Converters Utilizing Vishay s Application Sheet
VISHAY DALE www.vishay.com Magnetics Selecting IHLP Composite Inductors for Non-Isolated Converters INTRODUCTION This application note will provide information to assist in the specification of IHLP composite
Conducted EMI filter design for SMPS
Conducted EMI filter design for Jukka-Pekka Sjöroos Helsinki University of Technology Power Electronics Laboratory Conducted EMI filter design for Introduction EMI in Common Mode(CM noise Differential
EMI and t Layout Fundamentals for Switched-Mode Circuits
v sg (t) (t) DT s V pp = n - 1 2 V pp V g n V T s t EE core insulation primary return secondary return Supplementary notes on EMI and t Layout Fundamentals for Switched-Mode Circuits secondary primary
Chapter 14: Inductor design
Chapter 14 Inductor Design 14.1 Filter inductor design constraints 14.2 A step-by-step design procedure 14.3 Multiple-winding magnetics design using the K g method 14.4 Examples 14.5 Summary of key points
Lecture 24. Inductance and Switching Power Supplies (how your solar charger voltage converter works)
Lecture 24 Inductance and Switching Power Supplies (how your solar charger voltage converter works) Copyright 2014 by Mark Horowitz 1 Roadmap: How Does This Work? 2 Processor Board 3 More Detailed Roadmap
G019.A (4/99) UNDERSTANDING COMMON MODE NOISE
UNDERSTANDING COMMON MODE NOISE PAGE 2 OF 7 TABLE OF CONTENTS 1 INTRODUCTION 2 DIFFERENTIAL MODE AND COMMON MODE SIGNALS 2.1 Differential Mode signals 2.2 Common Mode signals 3 DIFFERENTIAL AND COMMON
Common Mode and Differential Mode Noise Filtering
Summary Introduction This application note gives a practical explanation of differential mode and common mode noise along with the traditional filtering approaches. In addition, an alternative method of
Printed Circuit Boards. Bypassing, Decoupling, Power, Grounding Building Printed Circuit Boards CAD Tools
Printed Circuit Boards (PCB) Printed Circuit Boards Bypassing, Decoupling, Power, Grounding Building Printed Circuit Boards CAD Tools 1 Bypassing, Decoupling, Power, Grounding 2 Here is the circuit we
Power Supplies. 1.0 Power Supply Basics. www.learnabout-electronics.org. Module
Module 1 www.learnabout-electronics.org Power Supplies 1.0 Power Supply Basics What you ll learn in Module 1 Section 1.0 Power Supply Basics. Basic functions of a power supply. Safety aspects of working
ABSTRACT 1. INTRODUCTION
Inductor Cores Material and Shape Choices by Mark A. Swihart, Manager of Applications Engineering Magnetics, Division of Spang & Co. Pittsburgh, Pennsylvania USA ABSTRACT A carefully considered power inductor
Module 11: Conducted Emissions
Module 11: Conducted Emissions 11.1 Overview The term conducted emissions refers to the mechanism that enables electromagnetic energy to be created in an electronic device and coupled to its AC power cord.
Solar Inverters. Ferrites in Renewable Energies: Solar Inverters. customer requirements. Support and flexibility to design custom product to fulfill
Support and flexibility to design custom product to fulfill customer requirements Optimum ferrite material selection for magnetic applications in the design for cost saving, and performance improvement
Which is the best PFC stage for a 1kW application?
Which is the best PFC stage for a 1kW application? Comparison of different PFC stage topologies under an identical design philosophy Ulf Schwalbe/ Marko Scherf ISLE Steuerungstechnik und Leistungselektronik
ES250: Electrical Science. HW7: Energy Storage Elements
ES250: Electrical Science HW7: Energy Storage Elements Introduction This chapter introduces two more circuit elements, the capacitor and the inductor whose elements laws involve integration or differentiation;
A Simple Current-Sense Technique Eliminating a Sense Resistor
INFINITY Application Note AN-7 A Simple Current-Sense Technique Eliminating a Sense Resistor Copyright 998 A SIMPE CURRENT-SENSE TECHNIQUE EIMINATING A SENSE RESISTOR INTRODUCTION A sense resistor R S,
Improved PFC Boost Choke using a Quasi-Planar Winding Configuration Dave Shonts Schott Corporation 1000 Parkers Lake Road Wayzata, MN 55391
Improved PFC Boost Choke using a Quasi-Planar Winding Configuration Dave Shonts Schott Corporation 1000 Parkers Lake Road Wayzata, MN 55391 Abstract- A novel approach to boost inductor design using a quasi-planar
Inductor and Magnetic Product Terminology
INTRODUCTION IFC LPT ILB IHSM IM IMC LPE TJ LPC IRF IHB The scope of this application note is to define the terminology associated with inductors and their applications. Some of these terms are listed
Homework #11 203-1-1721 Physics 2 for Students of Mechanical Engineering
Homework #11 203-1-1721 Physics 2 for Students of Mechanical Engineering 2. A circular coil has a 10.3 cm radius and consists of 34 closely wound turns of wire. An externally produced magnetic field of
Edmund Li. Where is defined as the mutual inductance between and and has the SI units of Henries (H).
INDUCTANCE MUTUAL INDUCTANCE If we consider two neighbouring closed loops and with bounding surfaces respectively then a current through will create a magnetic field which will link with as the flux passes
DC-DC Converter Basics
Page 1 of 16 Free Downloads / Design Tips / Java Calculators / App. Notes / Tutorials / Newsletter / Discussion / Components Database / Library / Power Links / Software / Technical Articles / On-Line Textbook
Chapter 4. LLC Resonant Converter
Chapter 4 LLC Resonant Converter 4.1 Introduction In previous chapters, the trends and technical challenges for front end DC/DC converter were discussed. High power density, high efficiency and high power
Selecting the Optimal Inductor for Power Converter Applications
Selecting the Optimal Inductor for Power Converter Applications BACKGROUND Today s electronic devices have become increasingly power hungry and are operating at higher switching frequencies, starving for
Application Note. So You Need to Measure Some Inductors?
So You Need to Measure Some nductors? Take a look at the 1910 nductance Analyzer. Although specifically designed for production testing of inductors and coils, in addition to measuring inductance (L),
Common Mode Inductors for EMI Filters Require Careful Attention to Core Material Selection
POWER Common Mode Inductors for EMI Filters Require Careful Attention to Core Material Selection Robert West, Magnetics, Division of Spang & Co., Butler, Pennsylvania The common mode inductor is an integral
Common Mode Choke Filtering Improves CMRR in Ethernet Transformer Applications. Application Note. June 2011
Common Mode Choke Filtering Improves CMRR in Ethernet Transformer Applications June 2011 Application Note Common mode chokes provide an effective EMI filtering solution for Ethernet transformer applications.
AN2228 APPLICATION NOTE
AN2228 APPLICATION NOTE STD1LNK60Z-based Cell Phone Battery Charger Design Introduction This application note is a Ringing Choke Converter (RCC)-based, step-by-step cell phone battery charger design procedure.
Design Considerations for an LLC Resonant Converter
Design Considerations for an LLC Resonant Converter Hangseok Choi Power Conversion Team www.fairchildsemi.com 1. Introduction Growing demand for higher power density and low profile in power converter
Outline. Systems and Signals 214 / 244 & Energy Systems 244 / 344. Ideal Inductor. Ideal Inductor (cont... )
Outline Systems and Signals 214 / 244 & Energy Systems 244 / 344 Inductance, Leakage Inductance, Mutual Inductance & Transformers 1 Inductor revision Ideal Inductor Non-Ideal Inductor Dr. P.J. Randewijk
Chapter 15: Transformer design
Chapter 15 Transformer Design Some more advanced design issues, not considered in previous chapter: : n Inclusion of core loss + + Selection of operating flux i 1 density to optimize total loss v 1 v Multiple
Diodes have an arrow showing the direction of the flow.
The Big Idea Modern circuitry depends on much more than just resistors and capacitors. The circuits in your computer, cell phone, Ipod depend on circuit elements called diodes, inductors, transistors,
2. A conductor of length 2m moves at 4m/s at 30 to a uniform magnetic field of 0.1T. Which one of the following gives the e.m.f. generated?
Extra Questions - 2 1. A straight length of wire moves through a uniform magnetic field. The e.m.f. produced across the ends of the wire will be maximum if it moves: a) along the lines of magnetic flux
Line Reactors and AC Drives
Line Reactors and AC Drives Rockwell Automation Mequon Wisconsin Quite often, line and load reactors are installed on AC drives without a solid understanding of why or what the positive and negative consequences
This application note is written for a reader that is familiar with Ethernet hardware design.
AN18.6 SMSC Ethernet Physical Layer Layout Guidelines 1 Introduction 1.1 Audience 1.2 Overview SMSC Ethernet products are highly-integrated devices designed for 10 or 100 Mbps Ethernet systems. They are
ALLOY POWDER CORE SERIES INTRODUCTION
ALLOY POWDER CORE SERIES INTRODUCTION 1 DMEGC alloy powder cores are made from insulated pretreatment alloy powders which have low losses at elevated temperature and have relatively stable inductance over
Solution Derivations for Capa #11
Solution Derivations for Capa #11 Caution: The symbol E is used interchangeably for energy and EMF. 1) DATA: V b = 5.0 V, = 155 Ω, L = 8.400 10 2 H. In the diagram above, what is the voltage across the
Last time : energy storage elements capacitor.
Last time : energy storage elements capacitor. Charge on plates Energy stored in the form of electric field Passive sign convention Vlt Voltage drop across real capacitor can not change abruptly because
d di Flux (B) Current (H)
Comparison of Inductance Calculation Techniques Tony Morcos Magnequench Technology Center Research Triangle Park, North Carolina 1 VCM Baseline: Geometry Axially-magnetized MQ3-F 42 NdFeB disk Br = 131kG
Design of an Auxiliary Power Distribution Network for an Electric Vehicle
Design of an Auxiliary Power Distribution Network for an Electric Vehicle William Chen, Simon Round and Richard Duke Department of Electrical & Computer Engineering University of Canterbury, Christchurch,
Application Note AN:005. FPA Printed Circuit Board Layout Guidelines. Introduction Contents. The Importance of Board Layout
FPA Printed Circuit Board Layout Guidelines By Paul Yeaman Principal Product Line Engineer V I Chip Strategic Accounts Introduction Contents Page Introduction 1 The Importance of 1 Board Layout Low DC
Circuits with inductors and alternating currents. Chapter 20 #45, 46, 47, 49
Circuits with inductors and alternating currents Chapter 20 #45, 46, 47, 49 RL circuits Ch. 20 (last section) Symbol for inductor looks like a spring. An inductor is a circuit element that has a large
Mutual Inductance and Transformers F3 3. r L = ω o
utual Inductance and Transformers F3 1 utual Inductance & Transformers If a current, i 1, flows in a coil or circuit then it produces a magnetic field. Some of the magnetic flux may link a second coil
Evaluating AC Current Sensor Options for Power Delivery Systems
Evaluating AC Current Sensor Options for Power Delivery Systems State-of-the-art isolated ac current sensors based on CMOS technology can increase efficiency, performance and reliability compared to legacy
AND8229/D. An Introduction to Transient Voltage Suppression Devices APPLICATION NOTE
An Introduction to Transient Voltage Suppression Devices Prepared by: Jim Lepkowski ON Semiconductor APPLICATION NOTE INTRODUCTION Transient Voltage Suppression (TVS) protection devices such as shielded
8 Speed control of Induction Machines
8 Speed control of Induction Machines We have seen the speed torque characteristic of the machine. In the stable region of operation in the motoring mode, the curve is rather steep and goes from zero torque
CMS Common mode inductors, surface mount
Technical Data 4313 Effective October 215 Supersedes March 27 Common mode inductors, surface mount pplications EMI filters DC-DC brick power supplies Discrete output supplies Discrete and point-of-use
LECTURE 31 Inductor Types and Associated Magnetic Cores
LECTURE 31 Inductor Types and Associated Magnetic Cores 1 A. Magnetic Core Choices to Wind Cu Wire Around 1. Available Magnetic Cores a. Commercial Core Geometry s b. Available Core Materials(B SAT,µ vs.
SELECTION GUIDE. Nominal Input
www.murata-ps.com NKE Series FEATURES RoHS Compliant Sub-Miniature SIP & DIP Styles 3kVDC Isolation UL Recognised Wide Temperature performance at full 1 Watt load, 40 C to 85 C Increased Power Density
PCMC063T- Power Choke Coil
PCMC063T- Power Choke Coil Features Low loss realized with low DCR 100% lead (Pb) free, RoHS compliant High performance (Isat) realized by metal dust core Low profile: 12.6mm x 13.8mm x 5.0mm Capable of
EMI Conducted Interference
Although the concepts stated are universal, this application note was written specifically for Interpoint products. Switching power converters are natural generators of input narrowband spectral noise
Clamp Filters that Suppress Emission Noise Provide Immunity Against Surge Noise
TDK EMC Technology Product Section Clamp Filters that Suppress Emission Noise Provide Immunity Against Surge Noise TDK Shonai Corporation Satoru Saito Reduce Emission Noise from Cables Even if an electronic
Energy in Electrical Systems. Overview
Energy in Electrical Systems Overview How can Potential Energy be stored in electrical systems? Battery Stored as chemical energy then transformed to electrical energy on usage Water behind a dam Water
Application Parameters:
May 93 Lloyd Dixon Summary: Coupled inductors have many applications in power electronics. In a multiple-output buck derived regulator. filter inductor windings coupled on a common core provide vastly
LVDS Technology Solves Typical EMI Problems Associated with Cell Phone Cameras and Displays
AN-5059 Fairchild Semiconductor Application Note May 2005 Revised May 2005 LVDS Technology Solves Typical EMI Problems Associated with Cell Phone Cameras and Displays Differential technologies such as
1. Challenges of EMI 2. Typical EMI Sources 3. Low, broadband and high frequency EMI problems
A. EMI 1. Challenges of EMI 2. Typical EMI Sources 3. Low, broadband and high frequency EMI problems B. EMI Related to Magnetics / Ferrites 1. Interesting & unique properties 2. EMI coupling model- How
EEE1001/PHY1002. Magnetic Circuits. The circuit is of length l=2πr. B andφ circulate
1 Magnetic Circuits Just as we view electric circuits as related to the flow of charge, we can also view magnetic flux flowing around a magnetic circuit. The sum of fluxes entering a point must sum to
" PCB Layout for Switching Regulators "
1 " PCB Layout for Switching Regulators " 2 Introduction Linear series pass regulator I L V IN V OUT GAIN REF R L Series pass device drops the necessary voltage to maintain V OUT at it s programmed value
Application Note AN- 1095
Application Note AN- 1095 Design of the Inverter Output Filter for Motor Drives with IRAMS Power Modules Cesare Bocchiola Table of Contents Page Section 1: Introduction...2 Section 2 : Output Filter Design
POWER LINE FILTERS FOR SWITCHING POWER SUPPLIES
POWER INE FITERS FOR SWITCHING POWER SUPPIES ing. Eugen COCA *, prof. dr. ing. Dimitrie AEXA ** * EECTRICA SA - SD SUCEAVA - ROMANIA ** U.T. Gh. Asachi IASI - ROMANIA * SEM0kV - PRAM str. Stefan cel Mare,
34 Series - Slim electromechanical PCB relays 6 A. Features SERIES 34.51
34 Series - Slim electromechanical PCB relays 6 34 SERIES Features 34.51 Ultra-slim 1 Pole - 6 relay Printed circuit mount - direct or via PCB socket 35 mm rail mount - via screw, screwless or push-in
EE301 Lesson 14 Reading: 10.1-10.4, 10.11-10.12, 11.1-11.4 and 11.11-11.13
CAPACITORS AND INDUCTORS Learning Objectives EE301 Lesson 14 a. Define capacitance and state its symbol and unit of measurement. b. Predict the capacitance of a parallel plate capacitor. c. Analyze how
Magnetics in Switched-Mode Power Supplies
Magnetics in Switched-Mode Power Supplies Agenda Block Diagram of a Typical AC-DC Power Supply Key Magnetic Elements in a Power Supply Review of Magnetic Concepts Magnetic Materials Inductors and Transformers
Cumbria Designs T-1. SSB/CW Filter kit (4.9152MHz) User Manual
Cumbria Designs T-1 SSB/CW Filter kit (4.9152MHz) User Manual CONTENTS 1 INTRODUCTION 2 2 CIRCUIT DESCRIPTION 2 3 ASSEMBLY 2 4 TESTING 4 The Steading Stainton PENRITH Cumbria CA11 0ES UK 1 Introduction
Custom Products. Magnetic Components. Vishay Dale. www.vishay.com
Magnetic Components SWITCH MODE MAGNETICS AIR CORE INDUCTORS INDUCTIVE PRODUCTS CUSTOM DESIGN AND PRODUCTION has extensive facilities for custom design and production of custom magnetics. Design applications
1ED Compact A new high performance, cost efficient, high voltage gate driver IC family
1ED Compact A new high performance, cost efficient, high voltage gate driver IC family Heiko Rettinger, Infineon Technologies AG, Am Campeon 1-12, 85579 Neubiberg, Germany, heiko.rettinger@infineon.com
ILB, ILBB Ferrite Beads
ILB, ILBB Ferrite Beads Electro-Magnetic Interference and Electro-Magnetic Compatibility (EMI/EMC) avid B. Fancher Inductive Products ivision INTROUCTION Manufacturers of electrical and electronic equipment
= V peak 2 = 0.707V peak
BASIC ELECTRONICS - RECTIFICATION AND FILTERING PURPOSE Suppose that you wanted to build a simple DC electronic power supply, which operated off of an AC input (e.g., something you might plug into a standard
Application Note, Rev.1.0, September 2008 TLE8366. Application Information. Automotive Power
Application Note, Rev.1.0, September 2008 TLE8366 Automotive Power Table of Contents 1 Abstract...3 2 Introduction...3 3 Dimensioning the Output and Input Filter...4 3.1 Theory...4 3.2 Output Filter Capacitor(s)
POWER FORUM, BOLOGNA 20-09-2012
POWER FORUM, BOLOGNA 20-09-2012 Convertitori DC/DC ad alta densità di potenza e bassa impedenza termica. Massimo GAVIOLI. Senior Field Application Engineer. Intersil SIMPLY SMARTER Challenges when Designing
Wireless Power Transfer System Design. Julius Saitz ANSYS
Wireless Power Transfer System Design Julius Saitz ANSYS 1 WPT System 2 Wireless Power Transfer (WPT) Near-Field (Inductive coupling, resonant) Do not rely on propagating EM waves Operate at distances
INDUCTOR DESIGN IN SWITCHING REGULATORS
Division of Spang & Company Technical Bulletin BULLETIN SR-1A INDUCTOR DESIGN IN SWITCHING REGULATORS Better efficiency, reduced size, and lower costs have combined to make the switching regulator a viable
Lab 14: 3-phase alternator.
Lab 14: 3-phase alternator. Objective: to obtain the no-load saturation curve of the alternator; to determine the voltage regulation characteristic of the alternator with resistive, capacitive, and inductive
Impedance Matching and Matching Networks. Valentin Todorow, December, 2009
Impedance Matching and Matching Networks Valentin Todorow, December, 2009 RF for Plasma Processing - Definition of RF What is RF? The IEEE Standard Dictionary of Electrical and Electronics Terms defines
Motor Fundamentals. DC Motor
Motor Fundamentals Before we can examine the function of a drive, we must understand the basic operation of the motor. It is used to convert the electrical energy, supplied by the controller, to mechanical
AND8328/D. 700 ma LED Power Supply Using Monolithic Controller and Off-Line Current Boosted (Tapped Inductor) Buck Converter
700 ma LED Power Supply Using Monolithic Controller and Off-Line Current Boosted (Tapped Inductor) Buck Converter Prepared by: Frank Cathell ON Semiconductor Introduction Light emitting diodes (LEDs) are
Toroids. Toroids. Design Considerations
Ferrite toroids provide an often convenient and very effective shape for many wide band, pulse and power transformers and inductors. The continuous magnetic path yields the highest effective permeability
Germanium Diode AM Radio
Germanium Diode AM Radio LAB 3 3.1 Introduction In this laboratory exercise you will build a germanium diode based AM (Medium Wave) radio. Earliest radios used simple diode detector circuits. The diodes
An equivalent circuit of a loop antenna.
3.2.1. Circuit Modeling: Loop Impedance A loop antenna can be represented by a lumped circuit when its dimension is small with respect to a wavelength. In this representation, the circuit parameters (generally
Chapter 10. AC Inductor Design. Copyright 2004 by Marcel Dekker, Inc. All Rights Reserved.
Chapter 10 AC Inductor Design Table of Contents 1. Introduction 2. Requirements 3. Relationship of, A p, to the Inductor Volt-Amp Capability 4. Relationship of, K g, to the Inductor Volt-Amp Capability
Tutorial One: Calculation of leakage inductance of transformer using FEM. 31.5 MVA, 132 kv/33kv, Y/, Ampere-turns: 135024, No.
Tutorial One: Calculation of leakage inductance of transformer using FEM Consider a transformer with the following rating: 31.5 MVA, 132 kv/33kv, Y/, Ampere-turns: 135024, No. of HV turns = 980 Although
The Flyback Converter
The Flyback Converter Lecture notes ECEN4517! Derivation of the flyback converter: a transformer-isolated version of the buck-boost converter! Typical waveforms, and derivation of M(D) = V/! Flyback transformer
Grounding Demystified
Grounding Demystified 3-1 Importance Of Grounding Techniques 45 40 35 30 25 20 15 10 5 0 Grounding 42% Case 22% Cable 18% Percent Used Filter 12% PCB 6% Grounding 42% Case Shield 22% Cable Shielding 18%
How To Make A Power Supply For A Flyback Power Supply
Design Note DN0501/D A 0 to 5 Watt, Low Cost, Off-line Power Supply Device Application Input Voltage Output Power Topology I/O Isolation White Goods, Small NCP151B Instruments, E- NCP41 90 67 Vac 0 to
Circuit Simulation and Technical Support Tools
TDK EMC Technology Practice Section Circuit Simulation and Technical Support Tools TDK Corporation Application Center Tetsuya Umemura, Katsushi Ebata 1 Utilization of Computer Simulation In recent years,
SELECTING PROPER CONNECTION POINTS FOR Y-CAPACITOR TO REDUCE EMI IN SMPS
SELECTING PROPER CONNECTION POINTS FOR Y-CAPACITOR TO REDUCE EMI IN SMPS Milind M. Jha 1, Kunj Behari Naik 2 and Shyama P. Das 3 1 Saraswati Institute of Technology and Management, Unnao, U.P., India 2
Designing with Magnetic Cores at High Temperatures
Technical Bulletin Designing with Magnetic Cores at High Temperatures All cores are not the same. Designers need to know the differences in order to make the best choices. Thermal considerations are a
Common Mode Filter Inductor Analysis
Document 2-1 Common Mode Filter Inductor Analysis Abstract Noise limits set by regulatory agencies make solutions to common mode EMI a necessary consideration in the manufacture and use of electronic equipment.
EMC Installation / Application Guidelines VECTORSTAR (VSA) Series Electronics MVS001H. EMC / CE Guidelines
EMC Installation / Application Guidelines VECTORSTAR (VSA) Series Electronics MVS001H EMC / CE Guidelines CONTENTS 1 Introduction... 3 2 Installation / Mounting... 3 3 Power Supply Filtering... 3 4 Motor
Current Ripple Factor of a Buck Converter
Application Note Edwin Wang AN1 April 14 Current Ripple Factor of a Buck Converter Abstract Inductor and capacitor forms a low-pass filter in a buck converter. The corner frequency the C filter is always
Measuring Impedance and Frequency Response of Guitar Pickups
Measuring Impedance and Frequency Response of Guitar Pickups Peter D. Hiscocks Syscomp Electronic Design Limited phiscock@ee.ryerson.ca www.syscompdesign.com April 30, 2011 Introduction The CircuitGear
Pulsed Power Engineering Diagnostics
Pulsed Power Engineering Diagnostics January 12-16, 2009 Craig Burkhart, PhD Power Conversion Department SLAC National Accelerator Laboratory Diagnostic Techniques and Considerations in Pulsed Power Systems
Current and Temperature Ratings
Document 361-1 Current and Temperature Ratings Introduction This application note describes: How to interpret Coilcraft inductor current and temperature ratings Our current ratings measurement method and
Since any real component also has loss due to the resistive component, the average power dissipated is 2 2R
Quality factor, Q Reactive components such as capacitors and inductors are often described with a figure of merit called Q. While it can be defined in many ways, it s most fundamental description is: Q
BSNL TTA Question Paper-Instruments and Measurement Specialization 2007
BSNL TTA Question Paper-Instruments and Measurement Specialization 2007 (1) Instrument is a device for determining (a) the magnitude of a quantity (b) the physics of a variable (c) either of the above
Analog outputs. Public Document. VS10XX AppNote: Connecting analog outputs
: Connecting analog outputs Description This document describes how to protect the analog outputs of VS10XX series devices from ESD and how to make a prtoected line-out connection. It shows an example
12. The current in an inductor is changing at the rate of 100 A/s, and the inductor emf is 40 V. What is its self-inductance?
12. The current in an inductor is changing at the rate of 100 A/s, and the inductor emf is 40 V. What is its self-inductance? From Equation 32-5, L = -E=(dI =dt) = 40 V=(100 A/s) = 0.4 H. 15. A cardboard
Transformerless UPS systems and the 9900 By: John Steele, EIT Engineering Manager
Transformerless UPS systems and the 9900 By: John Steele, EIT Engineering Manager Introduction There is a growing trend in the UPS industry to create a highly efficient, more lightweight and smaller UPS