More Related Content
Similar to Slides - Day 10.pdf
Similar to Slides - Day 10.pdf (20)
Recently uploaded
Recently uploaded (20)
Slides - Day 10.pdf
- 1. Professional EDA Tools Presented by: Pahan Mendis Chathuni Wijegunawardana Embedded Systems Workshop: Day 10 1
- 2. Meet the Instructors 2 Final Year Undergraduate - B.Sc. in Electronic & Telecom. Eng. from the University of Moratuwa, Sri Lanka Visiting Instructor at the Dept. of Electronic and Telecommunication Engineering at University of Moratuwa Trainee Electronic Engineer at Paraqum Technologies Vice President(SLRC) of the Electronic Club 3rd Year Undergraduate - B.Sc. in Electronic & Telecom. Eng. from the University of Moratuwa, Sri Lanka Island 1st in the GCE A/L Examination 2018 in Physical Science Stream Electronic Engineering Intern at Electrotek Pvt. Ltd. in New Zealand Pahan Mendis Chathuni Wijegunawardana https://www.linkedin.com/in/pahan-mendis/ https://www.linkedin.com/in/chathuni-wijegunawardana/
- 3. Introduction to professional EDA tools of circuit design Circuit design using Altium CircuitMaker Introduction to KiCAD Best practices in PCB design Collaborative PCB design Learning Outcomes 3
- 4. House Keeping Rules 4 Rename yourself as <National ID Card Number>/<First Name> We talk about practical concepts and techniques, feel free to ask away your doubts. You will get a break of 15 mins after 1.5 hours You can ask questions through Slido. We will be answering questions after every 45 minutes.
- 5. Introduction to Professional EDA Tools Next Up 5
- 6. Electronic Design Automation Software, hardware and services that assist the designing of semiconductor devices. Design Validation - to ensure it delivers the required performance Verification - where the design meets all requirements of manufacturing process What is EDA? Main Functionality Introduction to EDA Tools 6
- 7. Professional and Paid EDA Tools for PCB Design Professional to EDA Tools 7 Many features integrated for PCB design of complex systems Centralized management within an organization Collaboration Expensive i.e. Altium Designer costs $380(~ Rs. 150,000) per month!
- 8. Professional and Free EDA Tools for PCB Design Professional to EDA Tools 8 Provides the essential features required to design a PCB for manufacturing Provided for free
- 9. Next Up 9
- 10. Introduction to KiCAD 10 Available in many operating systems Integrated SPICE simulator Freely available Documentation provides everything you need to learn how to design a PCB using KiCAD - https://docs.kicad.org/
- 12. Next Up 12
- 13. Introduction to CircuitMaker 13 Developed by Altium GUI similar to Altium Designer Provides most of the features available in Altium Designer Cloud integration Work collaboratively
- 14. Setting Up CircuitMaker 14 https://www.altium.com/circuitmaker/download/b Download from: Create an account - Using your Google Account Download the CircuitMaker setup file Login to your account during the setting up Cloud Integration 1. 2. 3. 4.
- 15. CircuitMaker with Altium365 15 https://365.altium.com View your PCB designs anytime, anywhere! Collaborate with your team on the PCB design! Access from:
- 16. PCB Design Framework 16 Component Libraries Schematic Design Layout Design Fabrication Output Verification - Done by a third party to check for mistakes Schematics PCB layout Design rule check - Integrated into the EDA software - Make sure the PCB is manufacturable Additional Steps 1. a. b. 2.
- 17. List down the components needed Voltage Regulator - TPS62237DRYT Operational Amplifier - OPA4316 LED - 1206 SMD Read datasheets of important components Note down important specifications Power requirements Application circuits Layout recommendations Let's start designing a simple PCB. Step 1 - Preparing components Creating Components 17
- 18. Create a schematic document Set up the schematic Add parts/components Make connections Direct wiring Net labels Add additional components Annotate Organize the schematic Validate schematic Exporting to a PCB document Step 2 - Schematic design 1. 2. 3. 4. a. b. 5. 6. 7. 8. 9. Schematic Design 18
- 19. How to Find Components 19 Altium Vault Draw a custom part Downloading libraries and importing not available in the current version of CircuitMaker. 1. 2. Component library available in Altium Vault. Component library not available in Altium Vault. Have to draw a custom part.
- 20. Creating a Custom Part 20 Create a new component Name the component Add parameters and description Create schematic symbol Create footprint Add 3D model Link the symbol and footprint Add to the schematic 1. 2. 3. 4. 5. a. 6. 7.
- 21. Create a schematic document Set up the schematic Add parts/components Make connections Direct wiring Net labels Add additional components Annotate Organize the schematic Validate schematic Exporting to a PCB document Step 2 - Schematic design 1. 2. 3. 4. a. b. 5. 6. 7. 8. 9. Schematic Design 18
- 22. QnA 21
- 23. Create a PCB document Import design rules Create the layer stack Component placement Define board size Routing Nets - routing signal lines Power - using solid regions and vias Polygon pours GND layer PWR layer Top and bottom layer GND polygon pour Annotate Verify the design rules Step 3 - Layout design 1. 2. 3. 4. 5. 6. a. b. c. i. ii. iii. 7. 8. Layout Design 31
- 24. Signal Integrity Power Integrity Our main goal is to ensure best signal quality. There are two things we need to focus in our design to achieve that. 1. 2. Professional Practices in PCB Design 22 Signal Integrity Ensuring minimum distortion when a signal is propagated through the PCB trace. Power Integrity Power voltages throughout the PCB remains constant.
- 25. Attenuation Noise inducing Distortion happens in the form of : Signal Integrity 23 Sending signal Receiving signal Attenuation Ensuring correct trace widths Noise inducing Managing correct return paths Managing proper spacing between traces How to solve these distortions?
- 26. In the nearest ground conductor Where does the return path happen? Return Paths 24 Signal A induces noise on B N induces noise on A Make return paths independent Since A and B return paths are induced in the same conductor How to fix this? Return path A B A return path B return path GND conductor
- 27. Signal Return path frequency spread GND plane on bottom layer In the nearest ground conductor Where does the return path happen? Put a ground plane underneath the signal Fix Return Paths 25 Signal Signal Signal d adjust 'd' distance depending on the frequency
- 28. When having analog + digital components Common Practice Ground Placement 26 Analog Digital Analog ground Digital ground Where is the return path? In the nearest ground, which we don't know Best Practice Signal Analog Digital Signal Return path Have a clearly defined ground
- 29. Power Integrity 27 VCC GND 5V Power line is unstable Place decoupling capacitors very close to the IC 4-layer PCB Fix
- 30. Power Supply Placing Decoupling Capacitors and Connections 28 VCC GND Instant power is given by the capacitor Power Supply VCC GND Connect power using solid regions VCC GND Power Supply
- 31. 4-layer PCB 29 Signal Layer 1. 2. Power Layer 3. Ground Layer 4. Signal Layer Layer 2,3 act as a capacitor, which we call the plane capacitance.
- 33. Signal Integrity Power Integrity Return paths Placing grounds Placing components Reason for using 4-layer boards There are two aspects to focus for best PCB signal quality. 1. 2. Signal Integrity Power Integrity Analog Digital Separate grounds Return path Analog Digital Common ground Professional Practices in PCB Design : Summary 30 Placement Power Digital IC Digital I/O RF Microcontroller
- 34. Generate gerber files Generate drill files Generate engineering drawings Upload the gerber files to JLCPCB website for manufacturing Step 3 - Generate fabrication outputs 1. 2. 3. 4. Generate Fabrication Outputs 32 Gerber View
- 35. THANK YOU! 78