EMC Consutancy & Design solutions
Training
Our EMC training is tailored to meet the needs of the individual based on their level of expertise. We are going to cover a wide range of topics in our course, from the basics of signal integrity to the most common types of PCB layout errors. For more information about the course curricula, please read the following paragraphs.
EMC curriculum
Introduction to EMC-compliant design
Why does your equipment need to be EMC compliant?
Design for Electromagnetic compatibility
Radiated emission
Voltage interruptions, voltage dips, surges and fluctuations
ESD between objects and persons
Radio interferences interferences
Radar interferences
EMC compliant means quality of product
Examples
Understanding the EMC testing setup
Why is so important to understand the test setup?
Radiated Emission setup
Conductive Emission setup
Radiate immunity setup
Conductive immunity setup
ESD setup
Fast Transient, Surge, voltage dip Setup
Understanding the emission path
Radiation by a small loop
Radiation by 2 wires
Radiation by a bad IDC cable design
Current loop by a PCB trace
Current loop by a PCB trace over a ground plane
The Eddie current and how to utilize it to minimize radiated emission.
Current loop by a PCB trace without ground plane
Understanding the expected emission of a squarewave
Understanding the expected emission of a triangular wave
Resonance effects
Emission path during Conductive emission test
Design solutions
Typical design solutions for today applications
Protecting digital interfaces
USB 2.0
USB 3.0
CAN BUS
HDMI
LVDS
Ethernet
General I/O
Motor control
DC Motors
Step Motors
Main Filters
The importance of a CM choke
Understanding the Cy and Cx capacitors
Surge protection on the Main
DC powered device
Protecting your device from inrush current
Protecting from overvoltage and ESD
General IO interfaces
General idea and precautions
Noise from the power pins
The twisted pair cable
IDC cable (typical errors)
Optocouplers
Emission path solutions
Heatsink
How to minimise emissions from a heatsink
DC/DC converters
Radiated emission and conductive emission of an isulate DCDC converter
Input filtering
Input protection
Clock line
Reduction of even harmonic in a clock line
Reduction of off harmonic in a clock line
Radiated immunity issues
The diode as AM demodulator
The operational amplifier as AM demodulator
Emission estimation
Using LTSpice to simulate and improve conductive emission
Review of the CE setup
Understanding the LISN
Understanding the capacitor model
Put all toge
Return current design
Why the design of a return current is so important
Why we should call return and not ground
Signal return (the AC path)
Power return (the DC path)
Typical error during PCB Layout
Trace that cross a connector
Changing layers
Changing voltage domains
Decoupling IC and Planes
Calculate the bypass capacitor
Some considerations with the placement of vias between the capacitor and plane
Understanding the Bulk capacitor
Why a lack of bulk capacitor creates also CE and RE issues
Printed Circuit Board stackup
Why you should avoid a single layer and double layer design
4 Layer stackup
6 Layer stackup
8 layer stackup
10 layer stackup
