PCB Design Basics - Dwight Look College of Engineering Innovation Center –EIC What is PCB Design?...
Transcript of PCB Design Basics - Dwight Look College of Engineering Innovation Center –EIC What is PCB Design?...
PCB Design Basics
Engineering Innovation Center – EIC
Engineering Innovation Center – EIC
What is PCB Design?
• Creation of Schematics
• Layout of Components
• Routing of Traces
Involves the use of CAD software!
Engineering Innovation Center – EIC
Eagle – Modules
• Schematic Editor
• Layout Editor
Engineering Innovation Center – EIC
Eagle – Modules
• Autorouter
– Leaves a mess
– Lots of setup
– In most cases, Doesn’t save time
Engineering Innovation Center – EIC
Eagle – Integration
• Schematic Part and Footprint
• Back Annotation
• Library Editor
Engineering Innovation Center – EIC
Schematic Capture
• Logical Flow
• Use Net Ports
• Decoupling Capacitors
Engineering Innovation Center – EIC
PCB Layout
• Layer Stackup
• Material Considerations
Engineering Innovation Center – EIC
PCB Layout
• Group by Function
• Watch Spacing (Soldering!)
• Flow
Engineering Innovation Center – EIC
Trace Routing
• Current Capacity
– Trace Width
– Copper Thickness
• Voltage Isolation
– Distance (Clearance/Creepage)
– Environment
Engineering Innovation Center – EIC
Trace Routing
• Signal Integrity
– Short Traces
– No Right Angles
• Coupling
– Parallel Traces
Engineering Innovation Center – EIC
Trace Routing
• Ground Planes
– They’re that important
– A ground plane on a printed circuit board (PCB) is a large area or layer of copper foil connected to the circuit's ground point, usually one terminal of the power supply. It serves as the return path for current from many different components.
Engineering Innovation Center – EIC
Design Rule Check (DRC)
• DRC
– Enforces Specifications
– Helps Prevents Mistakes
• Specifications
– Clearance / Trace Width (Track/Gap)
– Drill Size / Annular Ring
Engineering Innovation Center – EIC
Design Rule Check (DRC)
Annular Ring
Drill Size
Trace Width
Clearance
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Fabrication
• Production
– Milling VS Chemical Etch VS Laser
– Through Hole Plating
• Submission
– Gerber Files (Layers)
– NC Drill File
Engineering Innovation Center – EIC
Fabrication
• Generate Files
– Eagle - ‘Cam Processor’
– Check files first!
• Submission
– EIC Specifications Online
– Google Form Submission – ‘Prototyping Request’