Data and Power Isolation (Design Conference 2013)
Download as PPTX, PDF3 likes2,832 views
The document outlines safety and performance considerations in signal processing, highlighting the necessity of electrical isolation in various applications to protect users and equipment from hazardous voltages. It discusses the advantages of using iCoupler technology over traditional optocouplers, including improved performance, integration, and reduced power consumption. Additionally, the document emphasizes compliance with safety standards and the importance of specific certifications in ensuring the reliability and safety of electronic components.
Data and Power Isolation (Design Conference 2013)
- 1. Data and Power Isolation Advanced Techniques of Higher Performance Signal Processing
- 2. Legal Disclaimer Notice of proprietary information, Disclaimers and Exclusions Of Warranties The ADI Presentation is the property of ADI. All copyright, trademark, and other intellectual property and proprietary rights in the ADI Presentation and in the software, text, graphics, design elements, audio and all other materials originated or used by ADI herein (the "ADI Information") are reserved to ADI and its licensors. The ADI Information may not be reproduced, published, adapted, modified, displayed, distributed or sold in any manner, in any form or media, without the prior written permission of ADI. THE ADI INFORMATION AND THE ADI PRESENTATION ARE PROVIDED "AS IS". WHILE ADI INTENDS THE ADI INFORMATION AND THE ADI PRESENTATION TO BE ACCURATE, NO WARRANTIES OF ANY KIND ARE MADE WITH RESPECT TO THE ADI PRESENTATION AND THE ADI INFORMATION, INCLUDING WITHOUT LIMITATION ANY WARRANTIES OF ACCURACY OR COMPLETENESS. TYPOGRAPHICAL ERRORS AND OTHER INACCURACIES OR MISTAKES ARE POSSIBLE. ADI DOES NOT WARRANT THAT THE ADI INFORMATION AND THE ADI PRESENTATION WILL MEET YOUR REQUIREMENTS, WILL BE ACCURATE, OR WILL BE UNINTERRUPTED OR ERROR FREE. ADI EXPRESSLY EXCLUDES AND DISCLAIMS ALL EXPRESS AND IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT OF ANY THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. ADI SHALL NOT BE RESPONSIBLE FOR ANY DAMAGE OR LOSS OF ANY KIND ARISING OUT OF OR RELATED TO YOUR USE OF THE ADI INFORMATION AND THE ADI PRESENTATION, INCLUDING WITHOUT LIMITATION DATA LOSS OR CORRUPTION, COMPUTER VIRUSES, ERRORS, OMISSIONS, INTERRUPTIONS, DEFECTS OR OTHER FAILURES, REGARDLESS OF WHETHER SUCH LIABILITY IS BASED IN TORT, CONTRACT OR OTHERWISE. USE OF ANY THIRD-PARTY SOFTWARE REFERENCED WILL BE GOVERNED BY THE APPLICABLE LICENSE AGREEMENT, IF ANY, WITH SUCH THIRD PARTY. ©2013 Analog Devices, Inc. All rights reserved. 2
- 3. Today’s Agenda What Problem Are We Solving? Insulation Characteristics and Isolation Requirements Discussion of Safety Certifications System Level Component Level Advantages of iCoupler Products over Optocouplers Application Examples Isolated DC-to-DC Converters Isolated Half-Bridge Gate Drivers 3
- 4. Problem to Be Solved 4 Hazardous voltages exist at many points within industrial and consumer locations People and equipment must be protected from long-term potential differences and temporary overvoltage conditions (faults) Local and global regulations mandate safety
- 5. Problem to Be Solved 5 Example: Industrial motors often switched with hundreds of volts Low voltage control system must interact with high voltage mains to safely operate the motor IEC standard 61800-5-1 governs safety requirements for adjustable speed electrical power drive systems
- 6. What Is Isolation? Why Is it Needed? Electrical isolation required in many applications Safety Protect users from shock Protect equipment from shock Performance Eliminate ground loops Provide fault tolerance Segregate noise Circuitry must communicate and/or provide power across an isolation barrier Maintain Isolation No current flow (or very little) High Performance Voltage ratings, power, timing, reliability 6
- 7. Insulation Characteristics and Isolation Requirements
- 8. Types of Isolation Functional Isolation Circuit Functionality only, not for protection Elimination of Ground Loops and Noise Fault Tolerance Safety Isolation Protects People or Other Equipment from Shock Basic Insulation – protection from electric shock Supplemental Insulation – independent insulation in a system to protect from faults Double Insulation – both basic and supplemental applied together Reinforced Insulation – a single insulation system demonstrated to be equivalent to double insulation 8
- 9. Reinforced Insulation Double insulation is created with independent basic and supplemental insulation applied to the same interface This is not always practical when high precision or high speed signals need to pass across the isolation barrier Analog degradation and digital timing errors accumulate with each barrier crossing Reinforced insulation allows a single insulation system to be classified as robust as double insulation Components may need to meet additional structural requirements Minimum thickness of solid insulation Multiple layers of film insulation Increased creepage and clearance Additional type testing during qualification Thermal cycling Surge Additional assembly line tests Partial discharge 9
- 10. Parameters that Characterize Isolation Insulation Grade • Basic • Supplementary • Reinforced Working Voltage Across a Barrier • Distance along surface to protect from tracking (creepage) • Insulation lifetime Transient Voltage • Distance through air that would prevent arcing (clearance) • Distance through Insulation (internal clearance) • Distance along material boundaries • Breakdown threshold of the insulation Environment of the Application • Type of contamination at the isolation barrier • Air pressure range (altitude of operation) 10 20um Polyimide Isolation
- 11. Creepage and Clearance for IC Packages Wide SO-16 Package Creepage 7.6mm Clearance >8mm Creepage Shortest distance across a surface between conductive parts Package limitation is the end Clearance Shortest distance through the air between conductive parts Board limited by pads < package 11 7.6mm Board and Package Have Different Measurements When Combined the Minimum Sets the System Limit
- 12. Insulation Lifetime Testing Is Time Consuming Accelerated testing (above maximum working voltage) must be used Models are used to extrapolate lifetime from shorter term data None of the Standards Effectively Addresses Coupler Lifetime Only VDE has something that is intended to simulate a life test and it is a pass fail under a set of test conditions Not useful for real verification of lifetime Manufacturers Test Their Own Parts Digital isolators use 2 types of insulating materials (polyimide and SiO2) Understand the wear out mechanisms for both materials Continue to test to better understand wear out and lifetime characteristics 12
- 14. Goals of a Safety Standard Application of a safety standard is intended to reduce the risk of injury or damage due to the following Electric shock Energy related hazards Fire Heat related hazards Mechanical Hazards Radiation Chemical hazards 14
- 15. Standards Bodies and Agencies Standards Bodies Develop the Master Standard for a System or Component IEC – International Electrical Commission – Worldwide UL – Underwriters Laboratories – North America VDE – in Europe For electrical safety, rules seem to be harmonizing with IEC Regional Standards Bodies Interpret worldwide standards for application to the local region Local line voltage requirements Infrastructure specific modifications (power quality) Environmental differences (altitude in China, humidity in Brazil) Political leverage Test Agencies Provide testing and certification services 15
- 16. Types of Standards Most Common Systems Level Standards Determine components specs based on system requirements IEC 60664-1: Insulation Coordination IEC 60950-1: Information Systems IEC 60601-1: Medical Equipment IEC 61010-1: Instrumentation IEC 61800-5: Motor Drives and Inverters Piece Part Level Standards Certify that components meet the manufacturers safety specifications, not certify to application requirements UL 1577: Used for All Isolators IEC 60747-5: Optocoupler Isolators VDE 0884-10: Nonoptocoupler Isolators – Reinforced Only 16
- 17. System and Component Standards All system level standards address safety isolation so that requirements for the system can be used to evaluate components System level specs can put unrealistic requirements on the internal construction of components If a component standard exists, it supersedes the requirements of the system standard Certified components can be treated as black boxes internally 17 IEC61010-1 System Level VDE-0884-10 Component Level
- 18. CB Certifications and China (CCC) Each IEC Standard Is Tailored to Its Market Segment For the safety standards the world is harmonizing quickly In most parts of the world if you have a certification for the end product at one of the larger testing organizations like TUV it will be applicable over most of the world There are still testing and regulatory differences CB Certification Reviews Your Certification Against All of the Other Flavors of the Same Standard and Reconciles the Differences At the piece part level it was optional to get a CB cert until recently China has issued their own set of standards, which are nearly identical to IEC standards with a few local differences such as high altitude requirements. The CB certification allows a manufacturer to get the CCC version of the certification with little or no test. CCC does not recognize external versions of the standards CCC also requires direct inspection of manufacturing facilities periodically This is costly to set up, but is required for all CCC certifications 18
- 19. iCoupler Products Meet Many System and Component Standards 19 www.analog.com/icoupler Safety and Regulatory Compliance
- 20. Advantages of iCoupler Products over Optocouplers
- 21. Optocoupler Technology Signal Isolator of Choice for Decades The standard for low-cost isolation GaAs or GaAlAs LEDs Emit Light When Current Passes Through It 5‒20mA typically used Speed is directly correlated to current Photodetector Absorbs Light and Turns It into Current Current Transfer Ratio (CTR) Defines Performance 21 LED Photodetector Additional Isolation for Higher Performance
- 22. Advantages of iCoupler Technology over Optocouplers Performance 4× improvement in data rate and timing specifications Integration Multiple isolation channel integrated with other functions reduces size and cost Power Consumption Operates at levels up to 90% lower than optocouplers Ease of Use Standard digital CMOS interfaces means no external components needed to connect to other digital devices Reliability Eliminate LEDs used in optocouplers 22
- 23. Performance Benefits – Data Rate and Timing 23 High Speed Medium Speed Parameter Analog Devices ADuM128xCR iCoupler Optocoupler 1 Optocoupler 2 Max. Data Rate (Mbps) 100 25 50 Prop. Delay (ns) 24 40 22 Part to Part Match (ns) 9 20 16 Pulse Width Distortion (ns) 2 6 2 Parameter Analog Devices ADuM128xBR Dual iCoupler Dual Optocoupler Max. Data Rate (Mbps) 25 10 Prop. Delay (ns) 35 100 Part to Part Match (ns) 12 40 Channel-to-Channel Match (ns) 6 Unspecified Pulse Width Distortion (ns) 3 35
- 24. Integration Benefits – 30%–60% Cost/Size Reduction vs. Optocoupler Solution 24 Component Count: 3 Board Area: 160 sq. mm Total Cost: $2.55 ADuM1401B: $2.40 Discretes (2): $0.03 Placement Costs: $0.12 Component Count: 18 Board Area: 425 sq mm Total Cost: $5.75 Opto (2): $2.50 Dual Opto: $2.50 Discretes (15): $0.21 Placement Costs: $0.54 C2C1 10mm 16 mm Data Converter Data Converter R5 R6 R7 R8 D1 D2 C2 C3 25mm 17 mm D4 R7 R1 R2 R3 R4 D3 C1 Vendor-recommended Interface Circuit ADuM1401 Dual Opto Opto Opto (10K OEM pricing) iCoupler Solution Optocoupler Solution
- 25. Wide Array of Integration Possibilities 25 Isolated Data Channels 1–6 channels Options for speed, temp, and ACQ-100 isoPower Isolated dc-to-dc power and data in 1 package Up to 500 mW isolated power Communications USB I2C SPI RS-485 RS-232 CAN Gate Drivers Half-bridge MOSFET drivers Gate drivers with isoPower Isolated - ADCs 16-bit Isolated Energy Metering
- 26. Over a Decade of Innovation and Reliability 26
- 27. 1 10 100 1000 0.01 0.1 1 10 100 PowerConsumption(mW) Data Rate (Mbps) Power Consumption Benefits – Up to 90% Reduction vs. Optocouplers 27 Reduced Heat Dissipation Improved Reliability Reduced Performance Variation Reduced Cost
- 28. Ease of Use Advantages Perceived Strength of Optocouplers Is Low Cost Inexpensive components don’t mean an inexpensive solution 28 Design Constraints Downside of Optocouplers Upside of iCoupler Tech. Board Layout Multiple components needed Single component Interface to Other Components Complex application circuits for each instance Standard TTL or CMOS Power Supply Increases need for more expensive power supplies Power supply flexible to budget Timing/Bandwidth Requirements Pay for higher performing components OR can’t meet requirements Components flexible to meet requirements Temperature Design considerations needed to account for current transfer ratio (CTR) No CTR; stable operation over temperature System Cost Lack of integrated features drives up system cost Complete, integrated solutions limit overall BOM cost
- 29. Reliability and Quality Benefits Single Digit ppm and Automotive Qualification 29 iCoupler Products Have the Same Safety Approvals as High Quality Optocouplers (UL, CSA, VDE) 100% Production Testing Is Performed at up to 6 kV rms Parameter Optocouplers Analog Devices iCoupler Products iCoupler Technology Benefits Active Devices LEDs, Photodiodes, (Silicon Transistors) 0.6 micron CMOS No LED Wearout FIT Rate <10 Insulation Discrete, Assembly-Level Polyimide, Wafer-Level Semiconductor clean-room environment, control, and consistency Thermal Dissipation 50 mW to 200 mW per channel 1mW to 10 mW per channel (data rates < 10 Mbps) Increased lifetime Negligible heating of adjacent components Safety reports available at: www.analog.com/iCoupler
- 30. Application Example: Isolated DC-to-DC Converter
- 31. Design of an Isolated DC-to-DC Power Supply Low power (<2.5 W) isolated DC-to-DC power is used in many applications: Isolated USB interface Smart sensor For most of these applications, the typical technical requirements are: High isolation voltage: 2.5 kV rms to 5.0 kV rms Low output voltage ripple: 1% of output voltage Excellent output voltage regulation: 1% over line and load Small size Long-term reliability: 20 to 50 years 31
- 32. Design of a 2.5 W Isolated DC-to-DC Power Supply The Function of an Isolated DC-to-DC Converter: Provide a stable dc power supply to the secondary side Provide good load regulation and load transient response Closed-loop control is required to provide good load regulation and transient response Two Main Topologies: Primary-side control: Output voltage information must be transferred from the secondary side to the primary side. Secondary-side control: Output voltage is divided down and connected to a secondary-side controller. The switching control signals are then sent to the primary side to control the switches. 32
- 33. Primary-Side Controller with an Optocoupler for Isolated Feedback from Secondary to Primary Optocoupler for feedback has many limitations CTR degradation over time can destabilize the loop Optocoupler added components waste power, add size and cost Slow loop response due to limited dynamic range of optocoupler A complicated multiorder RC network is needed to compensate the loop 33 Control Logic VIN SW VOUT GND1 GND2 VREF Type II or III Network Shunt Regulator (with Error Amp) Opto- Coupler Controller
- 34. Limitations of a Primary-Side Sensing Flyback Regulator The output voltage information can be derived from the flyback voltage, but the secondary diode voltage and its temperature dependence can affect the output regulation Need to design an external compensation network for the primary- side sensing controller, which adds complexity, size, and cost 34 VIN GND1 GND2 VREF Control Logic Controller Compensation Network VFLYBACK ~= (VOUT + VDIODE)*(NPRI/NSEC) VDIODE T1 NPRI/NSEC VOUT
- 35. New Technology: Primary- and Secondary-Side Control for Isolated DC-to-DC Switching Regulator Optimizes Control with Integrated Feedback Secondary-side controller sends PWM signal to primary-side controller Easier to Design with than Optocoupler-Based Solutions All loop compensation is internal All feedback is internal with no optocoupler CTR degradation issues Faster More Accurate Output Output voltage is sensed on the output side 35 VIN FB VOUT GND1 GND2 VREF X1 X2 Primary Control Logic Secondary Control Logic Compensation Network ADuM3070
- 36. ADuM3070 Isolated Switching Regulator 2.5 W Isolated DC-to-DC Converter 80% Efficiency Integrated Secondary-Side and Primary-Side Controllers Secondary-side sensing Isolated feedback to improve light load efficiency Integrated Transformer Driver Soft Start and Thermal Shutdown Regulated Output Voltage Between 3.3 V to 30 V Adjustable Internal Oscillator Between 200 kHz and 1 MHz 2500 V rms 1 Minute Withstand Isolation Rating 16-Lead QSOP package –40°C to +105°C 36 ADuM3070 10437-001 PRIMARY CONVERTER/ DRIVER SECONDARY CONTROLLER INTERNAL FEEDBACK VDD2 OC FB VREG VDD1 VISO VDDA X2X1 GND1 GND2 REG RECT 5V
- 37. Comparing ADuM3070 with Primary-Side Sensing Flyback Regulator The larger output ripple of the primary sensing flyback regulator is due to the DCM (discontinuous conduction mode) control while the ADuM3070 uses CCM (continuous conduction mode). The DCM mode allows the voltage on the output capacitor of the primary sensing flyback to droop when the secondary current is zero in discontinuous mode. 37 40 mV p-p 500 kHz ripple 100 mV p-p 200 kHz ripple
- 38. Accuracy of iCoupler Switching Regulator vs. Primary-Side Sensing Flyback 38 0 10 20 30 40 50 60 70 80 90 0 100 200 300 400 500 Efficiency(%) Load Current (mA) Efficiency Flyback ADuM3070 4.97 4.98 4.99 5.00 5.01 5.02 5.03 50 100 150 200 250 300 350 400 450 500 OutputVoltage(V) Load Current (mA) Load Regulation Flyback Solution ADuM3070 Solution 4.90 4.92 4.94 4.96 4.98 5.00 5.02 5.04 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 OutputVoltage(V) Ambient Temperature ( C) Temperature Performance Flyback Solution ADuM3070 Solution
- 39. Isolated DC-to-DC Switching Regulator Portfolio Isolation Rating Functionality Package Status ADuM347x 2.5 kV rms 4 Channel + Switching Regulator SSOP-20 Released ADuM3070 2.5 kV rms Switching Regulator Only QSOP-16 Released ADuM4070 5 kV rms Switching Regulator Only WSO-16 Released ADuM447x 5 kV rms 4 Channel + Switching Regulator WSO-20 Released Isolated Switching Controllers Are Available with Digital Isolators – ADuM347x 5 kV rms Reinforced Isolators in Certified 8 mm Creepage With and Without Quad Digital Isolators Also Available 39
- 40. Benefits of iCoupler Isolated Switching Regulators Versus Discrete Optocoupler-Based Regulated Solutions Less complicated design with internal feedback compensation Faster response Stable operation over lifetime Versus Primary-Side Sensing More accurate Better response over temperature Faster response Versus Discrete Power and Data Isolation Smaller size through higher levels of integration Higher efficiency than open loop designs with output regulators 40
- 41. Application Example: Isolated Half-Bridge Gate Drivers
- 42. Fundamentals of Implementing an Isolated Half-Bridge Gate Driver Typical Application Secondary power supply for high voltage power supplies and inverters: 42 Strings of PV Panels ~ AC Grid DC/DC Boost = = DC/AC Inverter = ~
- 43. Function of an Isolated Half-Bridge Gate Driver To drive the gates of high- and low-side N-channel MOSFETs (or IGBTs) To provide a low output impedance to reduce the conduction losses Have a fast switching time to reduce the switching losses The high- and low-side drivers need very close matching of the timing characteristics to allow accurate and efficient switching This reduces the dead-time from one switch of the half bridge turning off before the second switch turns on 43
- 44. Approaches High Voltage Half-Bridge Gate Driver Optocoupler Half-Bridge Gate Driver Pulse Transformer Half-Bridge Gate Driver Digital Isolator Gate Driver 44
- 45. High Voltage Half Bridge Gate Driver Limitation #1: Only one isolated input channel, relying on the high voltage driver to have the needed matching in the timing between channels, but the level shifter adds time delay between the channels Limitation #2: High voltage gate drivers do not have galvanic isolation and rely instead on junction isolation to separate the high-side drive voltage from the low-side drive voltage in the same IC Parasitic inductance in the circuit can cause the output voltage, VS, to go below ground during a low-side switching event When this happens, the high side driver can latch-up and become permanently damaged 45
- 46. Optocoupler Half-Bridge Gate Driver 2 optocouplers + 2 gate drivers = large solution size Optocouplers are discrete devices with limited in channel-to- channel matching Dead-time increases, adding to switching losses and reduced efficiency Increased optocoupler speed is based on increasing LED current, which reduces lifetime and consumes power 46
- 47. Pulse Transformer Half-Bridge Gate Driver An advantage of using a pulse transformer is that it does not require isolated power supplies to drive the secondary side MOSFETs A potential problem in this application can occur when large transient gate drive currents flow in the inductive coils, causing ringing Can switch the gate on and off when not intended, leading to damage of the MOSFETs Magnetic core and isolated windings of the pulse transformer require a relatively large package 47
- 48. Digitally Isolated Gate Driver Uses a standard CMOS integrated circuit process with metal layers to form transformer coils separated by 20 µm of rugged polyimide insulation Use in reinforced applications > 5 kV rms Isolation 50 year lifetime with 400 V rms working voltage and 700 V peak between the outputs 48
- 49. ADuM3223 (3 kV rms) and ADuM4223 (5 kV rms) Half-Bridge Gate Drivers 49 Fast Timing <50 ns total propagation delay <5 ns delay matching High Reliability 50 year lifetime for 400 V rms working voltage 125ºC Operation Integral Features Up to 5 kV rms input-output isolation 700 V galvanic isolation between outputs 4 A peak current drive 4.5 V to 18 V output range Disable pin UVLO on VDDA and VDDB Thermal shutdown Improves the Performance and Efficiency of: AC/DC power supplies DC/DC power supplies Solar inverters Motor control VOB VOA VDDB VSSA VDDA VSSB VIA VIB VDis
- 50. Importance of Common-Mode Transient Immunity (CMTI) in High Voltage Gate Drivers In half-bridge gate driver applications for high voltage power supplies, very fast transients can occur across the switching MOSFETs A large dV/dt across the isolation barrier has the potential to cause logic transition errors Optocouplers have very sensitive receivers to detect the light transmitted across their isolation barrier, and their outputs can be upset by large common mode transients Optocouplers are only immune up to 25 kV/µs 50
- 51. Capacitor-Based Digital Isolator with CMTI < 25 kV/µs With a 2-terminal device the signal frequencies need to be well above the expected frequency of the noise so that the barrier capacitance presents low impedance to the signal and high impedance to the noise When the common-mode noise level becomes large enough to overwhelm the signal, it can cause a data upset at the isolator output 51 Capacitor-based digital isolator with CMTI of < 25 kV/µs 2-terminal device: capacitor-based digital isolator
- 52. Transformer-Based Digital Isolator with CMTI > 50 kV/µs Digital isolators with transformer isolation can deliver higher signal levels to their receivers and withstand >50 kV/µs without data errors Transformer-based isolators are 4-terminal devices with low differential impedance to the signal and high common-mode impedance to the noise, which can yield excellent CMTI 52 Transformer-based digital isolator with CMTI of >50 kV/µs 4-terminal device: transformer-based digital isolator
- 53. Benefits of Isolated Half-Bridge Gate Drivers The solution size and design complexity are dramatically reduced through integration This leads to improved timing performance Robustness is also improved through galvanic isolation of the output drivers and higher CMTI 53
- 54. What Did We Cover Today? Discussed the need for galvanic isolation to provide safety and/or performance benefits Reviewed insulation characteristics and physical characteristics of isolators that are impacted by voltage requirements Examined the differences between system level and component level safety certifications Highlighted the advantages of iCoupler digital isolators over optocouplers Detailed two applications that benefit from the performance characteristics offered by digital isolators 54
- 55. Tweet it out! @ADI_News #ADIDC13 Design Resources Covered in This Session Design Tools and Resources: Ask technical questions and exchange ideas online in our EngineerZone™ Support Community Choose a technology area from the homepage: ez.analog.com Access the Design Conference community here: www.analog.com/DC13community 55 Name Description URL IBIS Models Input-Output Buffer Interface Standard (IBIS) Models for Signal Integrity Simulations iCoupler IBIS Models Circuits from the Lab H-Bridge Driver Circuit Using Isolated Half-Bridge Drivers CN0196 Low Cost, 16-Bit, 250 kSPS, 8-Channel, Isolated Data Acquisition System CN0254 Universal Serial Bus (USB) Cable Isolator Circuit CN0159 Videos iCoupler Digital Isolator Video Library Video Library
- 56. Tweet it out! @ADI_News #ADIDC13 Selection Table of Products Covered Today Part number Description ADuM3070 2.5 kV rms Isolated Switching Regulator with Integrated Feedback ADuM347x 2.5 kV rms Isolated Switching Regulator with Quad-Channel Isolators ADuM4070 5.0 kV rms Isolated Switching Regulator with Integrated Feedback ADuM447x 5.0 kV rms Isolated Switching Regulator with Quad-Channel Isolators ADuM3223 3.0 kV rms Isolated Precision Half-Bridge Driver, 4 A Output ADuM4223 5.0 kV rms Isolated Precision Half-Bridge Driver, 4 A Output 56
- 57. Tweet it out! @ADI_News #ADIDC13 Visit the ezLINX Demo in the Exhibition Room Design Tool to Help Customers Design with ADI’s Isolated Transceiver Products Rapid Design and System Evaluation Isolated communication networks Open-Source Hardware and Software Environment 8 different isolated physical layer communication standards Isolated USB, RS-485, RS- 422, CAN, RS-232, SPI, I2C and LVDS Demo Showing Live Isolated CAN Network 57 This demo board is available for purchase: www.analog.com/DC13-hardware