IBM Technology Symposium
|
|
- Ethelbert Lynch
- 6 years ago
- Views:
Transcription
1 IBM Technology Symposium Impact of Input Voltage on Server PSU- Efficiency, Power Density and Cost Design. Build. Ship. Service. Sriram Chandrasekaran November 13, 2012
2 Presentation Outline Redundant Server PSU Performance Metrics Efficiency, Power Density, Features Architectural Overview of Server PSU Overview of Converter Topologies Impact of input voltage on PSU Metrics AC Input voltage High line/low line 277Vac Dual input AC DC Input voltage 380Vdc 260Vdc 48Vdc 2
3 Redundant Server PSU Performance Metrics Efficiency 80 PLUS Certification 230V Internal Redundant % of Rated Load 10% 20% 50% 100% 80 PLUS Bronze % 85% 81% 80 PLUS Silver % 89% 85% 80 PLUS Gold % 92% 88% 80 PLUS Platinum % 94% 91% 80 PLUS Titanium 90% 94% 96% 91% Processed Power Density: > 40W/in 3 Features Sleep Mode Operation High Accuracy Reporting No-load input power Peak power profiles with throttling Event Recording Field-upgradability of firmware 3
4 FlexPower 3kW PSU 230Vin PSU Efficiency (%) % Load % Load Efficiency
5 PSU Block Diagram 1-φAC VAC EMI Filter Rectifier & Inrush Control Boost PFC (80 ~100kHz) Isolated DC/DC (80 ~100kHz) ~400V ORing FETs V 1 = 12V To power supply Bias & standby (80-100kHz) ORing FETs V sb = 12V Control Isolation Communication V hk To system 5
6 Control Block Diagram Boost PFC FET gating signals, Relay drive Primary and secondary side FET gating signals System V AC Digital PFC control Input current Bus voltage Switching Frequency Primary side monitoring and communication PFC Power & RMS algorithms Primary side digital controller Bus voltage, rectified current Isolation barrier Analog or Digital Control IC Voltage/current analog control DC/DC Controller Digital Isolator Output voltage, current signals PM Bus Digital Load share DC Algorithms Housekeeping and black box 8 bit Silabs Micro controller Secondary side microcontroller 6
7 Converter Topologies Design. Build. Ship. Service.
8 Power Factor Correction (AC Bulk Vdc) Conventional Boost PFC Bridgeless Boost PFC D CH DC 1 L B1 D A1 R 1 DC 1 L LB1 D A1 D A2 C H L B2 C R SA1 C H N S A1 S A2 R 2 DC 2 DC 2 Robust, time tested topology DCM, BM (Boundary Mode), CCM Interleaving for higher power Innovations Soft switching variations Magnetics design Control Higher efficiency EMI compliance is challenging Innovations EMI compliance Magnetics Design Control 8
9 Isolated DC/DC Conversion (Bulk Vdc 12V) Primary side PWM Single Stage (1) Phase-shifted Full Bridge (2) Half-Bridge (3) 2T forward Two-Stage (1) Boost + Half-bridge (50% duty cycle) (2) Buck + Half-bridge (50% duty cycle) Resonant Frequency modulated LLC (1) Boost + fixed frequency LLC (2) Buck + fixed frequency LLC Interleaving variations for higher power and ripple cancellation Secondary side Synchronous Rectification Current doublers Coupled inductors Center-tapped/single winding variations 9
10 Impact on Input Voltage on PSU Design. Build. Ship. Service.
11 Single Phase AC Input Universal line (90Vac 264Vac): <1000W High line only (180Vac 264Vac): >1000W, >30W/in 3 High line/de-rated low line 277Vac 11
12 Single Phase AC Input 1-φAC AC DC EMI + PFC DC BUS (400V nom) DC DC Isolated DC/DC V o = 12V DC REVERSE AIR FLOW FORWARD AIR FLOW Impact of input voltage range is dominant on design of the PFC power train Efficiency and power density 120Hz ripple on DC bus E-cap life Second order impact on DC/DC design from air-flow direction Packaging and Layout 12
13 277Vac 277Vac is Line-Neutral (Y) from 480Vac Line-Line ( ) input Input voltage max is 277Vac+10% = 305V Higher efficiency and density due to lower input current Front-End AC inlet X and Y caps 305V rated safety caps are available in the market now Rectifier/PFC Stage Peak Rectified 305Vac = 430Vdc Voltage rating switching devices can stay at 600V is Vbulk < 480V (80% derating) 500V rated bulk capacitance required High V bulk results in lower C bulk for given hold-up spec PF and THD impact due to lower input current 13
14 277Vac DC/DC Stage No change to primary side if Vbulk < 480V 600V/650V devices can continue to be used For PWM topologies, SR FET voltage rating may increase from 60V to 75V Device portfolio not as broad in the 75V space Cost and efficiency impact No impact to SRs for resonant topologies SR Voltage rating is 2X output voltage 14
15 277Vac Hold-up Capacitance Requirement C = 2P 1 o,max k C V 2 bus, nom η Vn D o t max 2 t H Bulk capacitance/watt for 10ms of hold-up P o Maximum output power t H Hold-up time, 10ms V bus,nom Bulk full load D max Max allowable duty cycle,45% V o Output voltage, 12.2V V dropout Drop out voltage, V o n t /D max n t Transformer turns ratio, 12:1 k C capacitor derating factor, 80% η DC/DC Stage efficiency, 96% 33% reduction in C bulk Bulk capacitance requirement is reduced at higher Vbulk. Availability of 500V caps (105C, 2000hr) is limited Best option is to build a series/parallel cap bank Impact to power density Largest capacitance in 30x50 can size is 300uF Large drop in foil gain results in reduction of C/m 2 voltage rating increases from 450V to 500V 15
16 277Vac PFC Efficiency Improvement PFC Efficiency comparison at 3kW Modulation range of bulk voltage as a function of load is limited with 277Vac Gains at light loads are insignificant due to dominant switching losses PFC design is optimized for reduced current at 277Vac Density advantage Higher inductance boost choke Bulk cap availability is the limiting factor for increasing density 16
17 Dual Redundant AC Input AC input fed into PSU through two AC inlets (FEED1 and FEED2) FEED 1 is the default input PSU monitors both AC inputs continuously PSU should switch to FEED 2 in the event of AC FAIL on FEED 1 PSU should switch back to FEED 1 when good AC is available Density and Cost impact due to AC Transfer Circuitry (Relay network) Monitoring and Control circuitry No efficiency impact 17
18 Dual Redundant AC Input AC Transfer Circuit L1 RLY_LINE L1 N1 L2 N2 L AC_DETECT L2 N1 RLY_NEUT RLY0 PRI_RTN N PSU N2 RLY1 PRI_RTN 18
19 DC Input PSU 380Vdc High Voltage DC Input 2006 study from Lawrence Berkeley labs showed 7% reduction in input power Hold-up requirements will dictate size of front-end 160Vdc 265Vdc Pass-through from Standby Power System 48Vdc PSU to operate from AC input and DC input. In the event of AC failure, DC input will be made available with specified duration PSU will power up within specified duration after availability of GOOD DC power 36VDC 72VDC input (from battery bank) Reverse polarity protection Hold-up time of 2ms -8ms High current makes design of front-end challenging 19
20 DC Input PSU Block Diagram Vdc EMI Filter Inrush Control & Reverse Polarity Protection or Bridge Rectifier Front-end Boost (80 ~100kHz) Isolated DC/DC (80 ~100kHz) ORing FETs V 1 = 12V To power supply Bias & standby (80-100kHz) ORing FETs V sb = 12V Control Isolation Communication V hk To system 20
21 High Voltage 380Vdc Input Efficiency improvement of front-end boost due to Elimination of Bridge Rectifier Near Unity Step-up ratio from 380Vdc to 430Vdc max ~99% Density Improvement due to reduced input current No significant change in PSU architecture Simplified RMS detection and control algorithms on front-end MPPF/MPF high voltage caps used for DM and CM filtering No impact to DC/DC stage or AUX stage 21
22 Front-End Boost Efficiency (3kW) Vin = 380V, Vo = 420V, fs= 60kHz Efficiency estimations are based on best-available component models 22
23 High Voltage 380Vdc Input - Connectors We have looked at Positronics connectors as an option We also expect front-loading designs where input/output terminals are on same connector system 23
24 DC Input PSU (165Vdc 260Vdc) 160Vdc 265Vdc Pass-through from Standby Power System PSU to operate from AC input and DC input In the event of AC failure, DC input will be made available with specified duration PSU will power up from DC input within specified duration from instant of availability of GOOD DC power No change in PSU architecture AC detection/metering algorithm has to accommodate DC input for Determining turn-on/turn-off thresholds Reporting Input power/voltage/current 24
25 DC Input PSU (48VDC) Counterparts of AC input PSUs in same form factor at same or lower power levels Reduced hold-up time (2ms to 8ms) Reverse Polarity Protection is required Achieving high densities at higher power levels (>1000W) is a challenge due to high input current 25
26 Input fuse and EMI Filter Common-Mode Choke based on UU-core At 36Vin/3kW input current is ~85A For every mω, power loss is 7.225W 4in of 14AWG wire has a resistance of 1mΩat 75C Multi-filar magnet wire or copper stampings UU-core geometry results in better window utilization Low L/High C filter to minimize turns, hence copper loss 26
27 Integrated Boost Choke for Front-End g 1 g 2 g 3 φl1 φl2 φl3 φ φ C L 2 φ L 3 φ C DT s φ C 4 D T s 3 T s 3 boost chokes integrated within a single ferrite core assembly (54mm(L) x 24mm (W) x 40mm (H)) Flux and currents are interleaved resulting low core and copper loss Fluxes are interleaved in ~72% of core volume (very low core loss) Per phase inductance of 28uH 27
28 Estimated Efficiency at 48Vdc/3kW 96 PSU Efficiency (%) % Load % Eff % Load PSU efficiency is dominated by conduction loss due to high input and output currents As a result, efficiency peaks at light loads and decreases down to 100% load due to I 2 R loss 28
29 Summary Impact of input voltage on redundant server PSU architecture and metrics were covered. No significant changes in power converter topologies other than obvious updates to component selection Higher input voltages lead to higher efficiency Density improvements are dictated by advancements in component technologies (1) 500V E-cap availability for 277Vac designs (2) High current front-end designs for 48Vdc designs High Voltage DC input PSUs are more efficient and simpler designs Require re-architecting of the power delivery infrastructure to server rack 29
GaN in Practical Applications
in Practical Applications 1 CCM Totem Pole PFC 2 PFC: applications and topology Typical AC/DC PSU 85-265 V AC 400V DC for industrial, medical, PFC LLC 12, 24, 48V DC telecomm and server applications. PFC
More information800 W PFC evaluation board
800 W PFC evaluation board EVAL_800W_PFC_C7_V2 / SP001647120 / SA001647124 High power density 800 W 130 khz platinum server design with analog & digital control Garcia Rafael (IFAT PMM ACDC AE) Zechner
More informationDesigning a 99% Efficient Totem Pole PFC with GaN. Serkan Dusmez, Systems and applications engineer
Designing a 99% Efficient Totem Pole PFC with GaN Serkan Dusmez, Systems and applications engineer 1 What will I get out of this session? Purpose: Why GaN Based Totem-pole PFC? Design guidelines for getting
More informationThe First Step to Success Selecting the Optimal Topology Brian King
The First Step to Success Selecting the Optimal Topology Brian King 1 What will I get out of this session? Purpose: Inside the Box: General Characteristics of Common Topologies Outside the Box: Unique
More informationPower of GaN. Enabling designers to create smaller, more efficient and higher-performing AC/DC power supplies
Power of GaN Enabling designers to create smaller, more efficient and higher-performing AC/DC power supplies Steve Tom Product Line Manager, GaN Products stom@ti.com Solving power and energy-management
More informationDigital Control IC for Interleaved PFCs
Digital Control IC for Interleaved PFCs Rosario Attanasio Applications Manager STMicroelectronics Presentation Outline 2 PFC Basics Interleaved PFC Concept Analog Vs Digital Control The STNRGPF01 Digital
More informationWelcome. High Efficiency SMPS with Digital Loop Control
Welcome High Efficiency SMPS with Digital Loop Control Presenter: Walter Mosa Company: MagneTek IBM Power and Cooling Technology Symposium September 20-21st FE 1U 800-12 High Density AC/DC Front-End Design
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 informationPractical Design Considerations for a 3.3kW Bridgeless Totem-pole PFC Using GaN FETs. Jim Honea Transphorm Inc
Practical Design Considerations for a 3.3kW Bridgeless Totem-pole PFC Using GaN FETs Jim Honea Transphorm Inc Overview of the Circuit Specifications 3.3kW (max) CCM bridgeless totem-pole PFC, Universal
More informationDesigning High-Efficiency ATX Solutions. Practical Design Considerations & Results from a 255 W Reference Design
Designing High-Efficiency ATX Solutions Practical Design Considerations & Results from a 255 W Reference Design Agenda Regulation and Market Requirements Target Specification for the Reference Design Architectural
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 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 informationDemonstration. Agenda
Demonstration Edward Lee 2009 Microchip Technology, Inc. 1 Agenda 1. Buck/Boost Board with Explorer 16 2. AC/DC Reference Design 3. Pure Sinewave Inverter Reference Design 4. Interleaved PFC Reference
More informationHow to Design Multi-kW Converters for Electric Vehicles
How to Design Multi-kW Converters for Electric Vehicles Part 1: Part 2: Part 3: Part 4: Part 5: Part 6: Part 7: Part 8: Electric Vehicle power systems Introduction to Battery Charging Power Factor and
More informationDesigning reliable and high density power solutions with GaN. Created by: Masoud Beheshti Presented by: Paul L Brohlin
Designing reliable and high density power solutions with GaN Created by: Masoud Beheshti Presented by: Paul L Brohlin What will I get out of this presentation? Why GaN? Integration for System Performance
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 informationDesigning High density Power Solutions with GaN Created by: Masoud Beheshti Presented by: Xaver Arbinger
Designing High density Power Solutions with GaN Created by: Masoud Beheshti Presented by: Xaver Arbinger Topics Why GaN? Integration for Higher System Performance Application Examples Taking GaN beyond
More information10kW Three-phase SiC PFC Rectifier
www.onsemi.com 10kW Three-phase SiC PFC Rectifier SEMICON EUROPA, Nov 13-18, 2018, Munich, Germany Contents General PFC Concept 3 Phase System and PFC Control Simulation Understanding the losses 3 Phase
More informationDesigning A Medium-Power Resonant LLC Converter Using The NCP1395
Designing A Medium-Power Resonant LLC Converter Using The NCP395 Prepared by: Roman Stuler This document describes the design procedure needed to implement a medium-power LLC resonant AC/DC converter using
More informationThe Quest for High Power Density
The Quest for High Power Density Welcome to the GaN Era Power Conversion Technology Drivers Key design objectives across all applications: High power density High efficiency High reliability Low cost 2
More information1.2 KW, N+1 REDUNDANT, POWER-FACTOR CORRECTED, 12V FRONT END
PS2379 CHARACTERIZATION 1.2 KW, N+1 REDUNDANT, POWER-FACTOR CORRECTED, 12V FRONT END October 26, 2005 Rev 1 Table of Contents 0. Introduction 4-16 1. Line Current Harmonics 17-18 2. Line Conducted EMI
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 information25 Watt DC/DC converter using integrated Planar Magnetics
technical note 25 Watt DC/DC converter using integrated Planar Magnetics Philips Components 25 Watt DC/DC converter using integrated Planar Magnetics Contents Introduction 2 Converter description 3 Converter
More informationSingle-Stage Three-Phase AC-to-DC Front-End Converters for Distributed Power Systems
Single-Stage Three-Phase AC-to-DC Front-End Converters for Distributed Power Systems Peter Barbosa, Francisco Canales, Leonardo Serpa and Fred C. Lee The Bradley Department of Electrical and Computer Engineering
More informationGet Your GaN PhD in Less Than 60 Minutes!
Get Your GaN PhD in Less Than 60 Minutes! 1 Detailed agenda Why is GaN Exciting GaN Fundamentals Cost and Reliability Totem Pole PFC Isolated LLC Motor Drive LiDAR Driving GaN Choosing a GaN Tools 4 Why
More informationOVP 2:1. Wide Range. Protection
10W, Wide Input Range DIP, Single & Dual Output DC/DC s Key Features High Efficiency up to 88 10 Isolation MTBF > 1,000,000 Hours 2:1 Wide Input Range CSA9-1 Safety Approval Complies with EN522 Class A
More informationMaximizing efficiency of your LLC power stage: design, magnetics and component selection. Ramkumar S
Maximizing efficiency of your LLC power stage: design, magnetics and component selection Ramkumar S What will I get out of this session? In this session we will look at the design considerations for developing
More informationBoundary Mode Offline LED Driver Using MP4000. Application Note
The Future of Analog IC Technology AN046 Boundary Mode Offline LED Driver Using MP4000 Boundary Mode Offline LED Driver Using MP4000 Application Note Prepared by Zheng Luo March 25, 2011 AN046 Rev. 1.0
More informationFuture Power Architectures for Servers and Proposed Technologies
1 Future Power Architectures for Servers and Proposed Technologies by Ming Xu Sep. 12, 2006 Center For Power Electronics Systems A National Science Foundation Engineering Research Center Virginia Tech,
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 informationCHAPTER 6 BRIDGELESS PFC CUK CONVERTER FED PMBLDC MOTOR
105 CHAPTER 6 BRIDGELESS PFC CUK CONVERTER FED PMBLDC MOTOR 6.1 GENERAL The line current drawn by the conventional diode rectifier filter capacitor is peaked pulse current. This results in utility line
More informationDesign of Clamp Forward Converter Used in Computing Devices
Design of Clamp Forward Converter Used in Computing Devices Chia-Sheng Tsai, Ming-Yang Tsai and Ming-Chieh Tsai Abstract In this paper, we implement a circuit topology for the gold standard ATX80+The total
More informationEnabling Next Generation High Density Power Conversion Presented at IBM Power and Cooling Technology Symposium, September 13, 2006
WHITE PAPER Enabling Next Generation High Density Power Conversion Presented at IBM Power and Cooling Technology Symposium, September 13, 2006 By Stephen Oliver VP Marketing & Sales, VI Chip & Paul Yeaman
More informationCHAPTER IV DESIGN AND ANALYSIS OF VARIOUS PWM TECHNIQUES FOR BUCK BOOST CONVERTER
59 CHAPTER IV DESIGN AND ANALYSIS OF VARIOUS PWM TECHNIQUES FOR BUCK BOOST CONVERTER 4.1 Conventional Method A buck-boost converter circuit is a combination of the buck converter topology and a boost converter
More informationIn Search of Powerful Circuits: Developments in Very High Frequency Power Conversion
Massachusetts Institute of Technology Laboratory for Electromagnetic and Electronic Systems In Search of Powerful Circuits: Developments in Very High Frequency Power Conversion David J. Perreault Princeton
More informationHigh Power Factor Bridgeless SEPIC Rectifier for Drive Applications
High Power Factor Bridgeless SEPIC Rectifier for Drive Applications Basheer K 1, Divyalal R K 2 P.G. Student, Dept. of Electrical and Electronics Engineering, Govt. College of Engineering, Kannur, Kerala,
More informationComparison Between CCM Single-Stage And Two-Stage Boost PFC Converters *
Comparison Between CCM Single-Stage And Two-Stage Boost PFC Converters * Jindong Zhang 1, Milan M. Jovanoviü, and Fred C. Lee 1 1 Center for Power Electronics Systems The Bradley Department of Electrical
More informationMethods for Realizing Power Balance in an Interleaved Configuration of LLC Resonant Converters. Heiko Figge, , IBM Technology Symposium
Methods for Realizing Power Balance in an Interleaved Configuration of LLC Resonant Converters Heiko Figge, 13.10.2012, Outline Why going for LLC? Why going for interleaved LLC? The balancing issue of
More informationBridgeless Buck Converter with Average Current Mode control for Power Factor Correction and Wide Input Voltage variation
Bridgeless Buck Converter with Average Current Mode control for Power Factor Correction and Wide Input Voltage variation Abstract In universal-line voltage (90-264 V) applications, maintaining a high efficiency
More informationIntroduction to Rectifiers and their Performance Parameters
Electrical Engineering Division Page 1 of 10 Rectification is the process of conversion of alternating input voltage to direct output voltage. Rectifier is a circuit that convert AC voltage to a DC voltage
More information12V-65W WIDE-RANGE INPUT MAINS ADAPTER USING THE L6566B
APPLICATION NOTE 12V-65W WIDE-RANGE INPUT MAINS ADAPTER USING THE L6566B Introduction This note describes the characteristics and the features of a 65 W reference board, wide-range input mains, AC-DC adapter
More informationAN003. Basic Terms Used for DC Power Supplies. Elaborated by: Marco Geri (R&D Manager - NEXTYS SA.)
AN003 Elaborated by: Marco Geri (R&D Manager - NEXTYS SA.) Rev.1.0 Page 1/5 1 Introduction DC (Direct Current) power supplies are used in various applications related to automation, telecom, industry,
More informationReference Design. TDTTP3300-RD 3.3kW Bridgeless Totem-pole PFC. Test Report
Reference Design TDTTP3300-RD 3.3kW Bridgeless Totem-pole PFC Table of Contents 1 Introduction... 4 1.1 Design resources... 4 2 Power supply specifications... 5 3 3-D board image... 6 4 Performance data...
More informationImpact of Fringing Effects on the Design of DC-DC Converters
Impact of Fringing Effects on the Design of DC-DC Converters Michael Seeman, Ph.D. Founder / CEO. 2018 APEC PSMA/PELS 2018. Outline Fringe-field loss: What does a power supply designer need to know? Which
More informationDigital Control for Power Electronics 2.0
Digital Control for Power Electronics 2.0 Michael Harrison 9 th November 2017 Driving Factors for Improved SMPS Control 2 End market requirements for improved SMPS performance: Power conversion efficiency
More informationBy Dhaval Dalal, Technical Marketing Director, Power Supplies, ON Semiconductor, Phoenix
223652.pmd 15 4/28/2005, 3:16 PM By Dhaval Dalal, Technical Marketing Director, Power Supplies, ON Semiconductor, Phoenix Adopting active PFC for harmonic-reduction while making other architectural- and
More informationCree PV Inverter Tops 1kW/kg with All-SiC Design
Cree PV Inverter Tops 1kW/kg with All-SiC Design Alejandro Esquivel September, 2014 Power Forum 2014 (Bologna) presentation sponsored by: Presentation Outline 1. Meeting an Industry Need a) 1kW/Kg b) No
More informationA new way to PFC and an even better way to LLC Bosheng Sun
A new way to PFC and an even better way to LLC Bosheng Sun 1 What will I get out of this session? Purpose: To introduce a recently developed advanced PFC + LLC solution with extremely low stand by power,
More informationPOWER ISIPO 29 ISIPO 27
SI NO. TOPICS FIELD ISIPO 01 A Low-Cost Digital Control Scheme for Brushless DC Motor Drives in Domestic Applications ISIPO 02 A Three-Level Full-Bridge Zero-Voltage Zero-Current Switching With a Simplified
More informationSRM TM A Synchronous Rectifier Module. Figure 1 Figure 2
SRM TM 00 The SRM TM 00 Module is a complete solution for implementing very high efficiency Synchronous Rectification and eliminates many of the problems with selfdriven approaches. The module connects
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 informationMaking Reliable and High-Density GaN Solutions a Reality
Making Reliable and High-Density GaN Solutions a Reality December 5, 2017 Franz Xaver Arbinger Masoud Beheshti 1 Today s Topics Why is GaN Exciting GaN Fundamentals Cost and Reliability Totem Pole PFC
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 informationLinear Transformer based Sepic Converter with Ripple Free Output for Wide Input Range Applications
Linear Transformer based Sepic Converter with Ripple Free Output for Wide Input Range Applications Karthik Sitapati Professor, EEE department Dayananda Sagar college of Engineering Bangalore, India Kirthi.C.S
More informationDesign considerations for a Half- Bridge LLC resonant converter
Design considerations for a Half- Bridge LLC resonant converter Why an HB LLC converter Agenda Configurations of the HB LLC converter and a resonant tank Operating states of the HB LLC HB LLC converter
More informationSingle Phase Induction Motor Drive using Modified SEPIC Converter and Three Phase Inverter
Single Phase Induction Motor Drive using Modified SEPIC Converter and Three Phase Inverter Ajeesh P R PG Student, M. Tech Power Electronics, Mar Athanasius College of Engineering, Kerala, India, Dr. Babu
More informationA Highly Versatile Laboratory Setup for Teaching Basics of Power Electronics in Industry Related Form
A Highly Versatile Laboratory Setup for Teaching Basics of Power Electronics in Industry Related Form JOHANN MINIBÖCK power electronics consultant Purgstall 5 A-3752 Walkenstein AUSTRIA Phone: +43-2913-411
More informationA HIGH STEP UP RESONANT BOOST CONVERTER USING ZCS WITH PUSH-PULL TOPOLOGY
A HIGH STEP UP RESONANT BOOST CONVERTER USING ZCS WITH PUSH-PULL TOPOLOGY Maheswarreddy.K, PG Scholar. Suresh.K, Assistant Professor Department of EEE, R.G.M College of engineering, Kurnool (D), Andhra
More informationPractical Tricks with Transformers. Larry Weinstein K0NA
Practical Tricks with Transformers Larry Weinstein K0NA Practical Tricks with Transformers Quick review of inductance and magnetics Switching inductive loads How many voltages can we get out of a $10 Home
More informationPower Supply Unit (550W)
Contents Power Supply Unit (550W) Chapter 3.1 GENERAL DESCRIPTION...3.1-1 APPLIED VOLTAGE...3.1-2 INPUT CURRENT...3.1-2 DC OUTPUT...3.1-3 VOLTAGE DROPOUT...3.1-4 OUTPUT ISOLATION...3.1-4 OVERLOAD/UNDERLOAD
More informationDIO8650 buck boost-80v235ma- THD<5% for LED T-tube lighting
DEMO EVALUATION REPORT DIO8650 buck boost-80v235ma- THD
More informationMAXREFDES121# Isolated 24V to 3.3V 33W Power Supply
System Board 6309 MAXREFDES121# Isolated 24V to 3.3V 33W Power Supply Maxim s power-supply experts have designed and built a series of isolated, industrial power-supply reference designs. Each of these
More informationABC400 Series is a compact and efficient series of AC-DC open frame power supplies suited for telecom, datacom and many other applications.
is a compact and efficient series of AC-DC open frame power supplies suited for telecom, datacom and many other applications. The family meets the international information technology safety standards
More informationVI-ARM Autoranging Rectifier Module
16 VI-ARM Autoranging Rectifier Module Overview The VI-ARM (Autoranging Rectifier Module) provides an effective solution for the AC front end of a power supply built with Vicor DC-DC converters. This high
More information81357 Series PFC Boost Module Application Information
81357 Series PFC Boost Module Application Information OVERVIEW Implementing power factor correction (PFC) into switch mode power supplies maximizes the power handling capability of the power supply and
More informationA Combined Buck and Boost Converter for Single-Phase Power-Factor Correction
2005 IBM Power and Cooling Technology Symposium A Combined Buck and Boost Converter for Single-Phase Power-Factor Correction Kevin Covi Introduction The AC/DC converters in IBM s high-end servers connect
More informationHow to Reconfigure a Buck Converter for Multiple Outputs
How to Reconfigure a Buck Converter for Multiple Outputs Introduction Power supply circuits come in the form of voltage stepup (boost) or the more common stepdown (buck) DC/DC converter. Many of today
More informationSoft-Switching Two-Switch Resonant Ac-Dc Converter
Soft-Switching Two-Switch Resonant Ac-Dc Converter Aqulin Ouseph 1, Prof. Kiran Boby 2,, Prof. Dinto Mathew 3 1 PG Scholar,Department of Electrical and Electronics Engineering, Mar Athanasius College of
More informationPitch Pack Microsemi full SiC Power Modules
Pitch Pack Microsemi full SiC Power Modules October 2014 SiC Main Characteristics vs. Si Characteristics SiC vs. Si Results Benefits Breakdown field (MV/cm) Electron sat. velocity (cm/s) Bandgap energy
More informationDesign and Simulation of New Efficient Bridgeless AC- DC CUK Rectifier for PFC Application
Design and Simulation of New Efficient Bridgeless AC- DC CUK Rectifier for PFC Application Thomas Mathew.T PG Student, St. Joseph s College of Engineering, C.Naresh, M.E.(P.hd) Associate Professor, St.
More informationAn AC-DC SEPIC CONVERTER FOR LIGHT EMITTING DIODE WITH CLASS E RESONANCE
Volume 120 No. 6 2018, 7027-7035 ISSN: 1314-3395 (on-line version) url: http://www.acadpubl.eu/hub/ http://www.acadpubl.eu/hub/ An AC-DC SEPIC CONVERTER FOR LIGHT EMITTING DIODE WITH CLASS E RESONANCE
More informationPower Factor Correction in Digital World. Abstract. 1 Introduction. 3 Advantages of Digital PFC over traditional Analog PFC.
Power Factor Correction in Digital World By Nitin Agarwal, STMicroelectronics Pvt. Ltd., India Abstract There are various reasons why power factor correction circuit is used in various power supplies in
More informationA Novel Transformer Structure for High power, High Frequency converter
A Novel Transformer Structure for High power, High Frequency converter Chao Yan, Fan Li, Jianhong Zeng, Teng Liu, Jianping Ying Delta Power Electronics Center 238 Minxia Road, Caolu Industry Zone, Pudong,
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 informationMAXREFDES116# ISOLATED 24V TO 5V 40W POWER SUPPLY
System Board 6283 MAXREFDES116# ISOLATED 24V TO 5V 40W POWER SUPPLY Overview Maxim s power supply experts have designed and built a series of isolated, industrial power-supply reference designs. Each of
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 informationChapter 2 LITERATURE REVIEW
28 Chapter 2 LITERATURE REVIEW S. No. Name of the Sub-Title Page No. 2.1 Introduction 29 2.2 Literature 29 2.3 Conclusion 33 29 2.1 Introduction This chapter deals with the literature reviewed for different
More informationSINGLE STAGE SINGLE SWITCH AC-DC STEP DOWN CONVERTER WITHOUT TRANSFORMER
SINGLE STAGE SINGLE SWITCH AC-DC STEP DOWN CONVERTER WITHOUT TRANSFORMER K. Umar Farook 1, P.Karpagavalli 2, 1 PG Student, 2 Assistant Professor, Department of Electrical and Electronics Engineering, Government
More informationApplication Note, V2.0, March 2006 EVALPFC2-ICE1PCS W PFC Evaluation Board with CCM PFC controller ICE1PCS01. Power Management & Supply
Application Note, V2.0, March 2006 EVALPFC2-ICE1PCS01 300W PFC Evaluation Board with CCM PFC controller ICE1PCS01 Power Management & Supply N e v e r s t o p t h i n k i n g. Edition 2006-03-27 Published
More informationEMI Filter Design Example. This is a very small 1 hour session based on our 2 Day EMI Filter Design Workshop
Biricha Digital Power Ltd Parkway Dr Reading RG4 6XG UK April - 208 EMI Filter Design Example This is a very small hour session based on our 2 Day EMI Filter Design Workshop Dr Ali Shirsavar Biricha Digital
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 informationPerformance Evaluation of Bridgeless PFC Boost Rectifiers
Performance Evaluation of Bridgeless PFoost Rectifiers Laszlo Huber, Yungtaek Jang, and Milan M. Jovanović Delta Products Corporation Power Electronics Laboratory P.O. Box 12173 5101 Davis Drive RTP, NC
More informationAn Interleaved Flyback Inverter for Residential Photovoltaic Applications
An Interleaved Flyback Inverter for Residential Photovoltaic Applications Bunyamin Tamyurek and Bilgehan Kirimer ESKISEHIR OSMANGAZI UNIVERSITY Electrical and Electronics Engineering Department Eskisehir,
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 informationCOMPLIANT Common Mode Chokes - UU9.8 & UU10.5 Series
Document FR00 COMPLIANT Common Mode Chokes - UU9.8 & UU0.5 Series Order Code MCU 000 MCU 0002 Core Mounting Inductance mh (Min) UU9.8 Series Current Rating ma (steady state) 350 350 Leakage DC Inductance
More informationVolume: 01, Issue: 01, September 2017, Page No.1-7 ISSN: XXXX-XXXX Single Phase Unidirectional High Efficiency Multilevel Bridgeless Pfc Rectifiers
Single Phase Unidirectional High Efficiency Multilevel Bridgeless Pfc Rectifiers M.Thavachelvam ME., S.Ananda Kumar Assistant Proffesor, PG scholar, Department of EEE Dhanalakshmi Srinivasan College of
More informationA NEW SINGLE STAGE THREE LEVEL ISOLATED PFC CONVERTER FOR LOW POWER APPLICATIONS
A NEW SINGLE STAGE THREE LEVEL ISOLATED PFC CONVERTER FOR LOW POWER APPLICATIONS S.R.Venupriya 1, Nithyananthan.K 2, Ranjidharan.G 3, Santhosh.M 4,Sathiyadevan.A 5 1 Assistant professor, 2,3,4,5 Students
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 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 informationGate Drive Optimisation
Gate Drive Optimisation 1. Background Driving of gates of MOSFET, IGBT and SiC/GaN switching devices is a fundamental requirement in power conversion. In the case of ground-referenced drives this is relatively
More informationReduction of Voltage Stresses in Buck-Boost-Type Power Factor Correctors Operating in Boundary Conduction Mode
Reduction of oltage Stresses in Buck-Boost-Type Power Factor Correctors Operating in Boundary Conduction Mode ars Petersen Institute of Electric Power Engineering Technical University of Denmark Building
More informationUM1746 User manual. 500 W fully digital AC-DC power supply based on the STM32F334 microcontroller. Introduction
User manual 500 W fully digital AC-DC power supply based on the STM32F334 microcontroller Introduction This user manual describes the basic procedure to correctly operate the 500 W digital power supply
More information160W PFC Evaluation Board with DCM PFC controller TDA and CoolMOS
Application Note Version 1.0 160W PFC Evaluation Board with DCM PFC controller TDA4863-2 and CoolMOS SPP08N50C3 Power Management & Supply TDA4863-2 SPP08N50C3 Ver1.0, _doc_release> N e v e
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 informationApplication Note, V1.1, October 2009 EVALPFC2-ICE2PCS W PFC Evaluation Board with CCM PFC controller ICE2PCS01. Power Management & Supply
Application Note, V1.1, October 2009 EVALPFC2-ICE2PCS01 300W PFC Evaluation Board with CCM PFC controller ICE2PCS01 Power Management & Supply N e v e r s t o p t h i n k i n g. Edition 2009-10-13 Published
More informationSHUNT ACTIVE POWER FILTER
75 CHAPTER 4 SHUNT ACTIVE POWER FILTER Abstract A synchronous logic based Phase angle control method pulse width modulation (PWM) algorithm is proposed for three phase Shunt Active Power Filter (SAPF)
More informationPower Factor Corrected Zeta Converter Based Switched Mode Power Supply
Power Factor Corrected Zeta Converter Based Switched Mode Power Supply Reshma Shabi 1, Dhanya B Nair 2 M-Tech Power Electronics, EEE, ICET Mulavoor, Kerala 1 Asst. Professor, EEE, ICET Mulavoor, Kerala
More informationCONTENTS 2/ /7 8/9 10/11 12/13 14/15 16/17 18/19 20/21 22/23 24/25 26/27 28/29 30/31 32/ Contact Us 38
CONTENTS Market Sectors Company Profile Planar Technology Product Range Overview Size 10 MAX 1kW Size 195 MAX 1.5kW Size 225 MAX 2kW Size 20 MAX 2kW Size 50 MAX 6.5kW Size 500 MAX 10kW Size 510 MAX 10kW
More informationDesign of step-up converter for a constant output in a high power design
2015; 1(6): 125-129 ISSN Print: 2394-7500 ISSN Online: 2394-5869 Impact Factor: 3.4 IJAR 2015; 1(6): 125-129 www.allresearchjournal.com Received: 25-03-2015 Accepted: 27-04-2015 M. Tech, (VLSI Design and
More informationDesign and implementation of a LLC-ZCS Converter for Hybrid/Electric Vehicles
Design and implementation of a LLC-ZCS Converter for Hybrid/Electric Vehicles Davide GIACOMINI Principal, Automotive HVICs Infineon Italy s.r.l. ATV division Need for clean Hybrid and Full Electric vehicles
More information