Course Description

Duration 1 day(s)

Language English    Venue TUV Product Service, Portsmouth, England

Country 

Course fee 330,00    Currency UK£    Discount 10% for multiple registrations

Description
Introduction
Good EMC design starts at PCB level.
With the emphasis today on higher speed digital systems, mixed technology systems and the need to meet the stringent EMC legislation, this one day course identifies how EMI problems occur and covers design techniques that will help in ensuring a compliant and cost effective product. Design techniques covering low speed two-layer boards and high speed multi-layer boards are explained along with techniques to reduce EMI problems from input/output cables.

Course Objectives:

- To provide an understanding of the mechanisms involved in PCB radiation and how to select components and layout PCB’s to minimise emissions.
- To provide a set of design rules specifically aimed at improving the overall EMC performance of complex PCB’s.

Course Contents and Time Table
Morning Session

Introduction and fundamentals:

-Differential/common mode coupling: between PCBs
-Differential/common mode coupling: internal to a PCB
-EMC control measures
-Radiation from the PCB
-Radiation from cables
-The spectrum of a trapezoidal wave
-Broadband noise
-Clock and broadband radiation

PCB layout:

-System partitioning
-Grounding on a PCB
-The low transfer impedance path
-Track impedance
-Ground bounce
-Proximity of signal and return tracks
-Gridded ground
-Groundplane
-The order of the layers
-Breaks in the ground plane
-Ground plane impedance
-Backplanes
-Construction of plug-in modules
-On-board shielding
-The advantage of surface mount
-Layout of suppression and filter components
-Separate I/O, digital and analogue grounds
-Creating the quiet ground
-The shield as ground reference

Afternoon Session

Practical demonstrations:

Showing effects of PCB ground plane, track layout, coupling from cables, using spectrum analyser,
antenna and near field probe set

Digital and analogue circuits:

-Choice of logic family
-Ringing on transmission lines
-Digital circuit decoupling
-Single chip micro-controllers
-Analogue instability
-Analogue circuit decoupling
-Output stage instability
-Design for immunity - digital circuits
-RF susceptibility of logic
-Transient and ESD protection
-The microprocessor watchdog
-Defensive programming
-Transient and RF immunity - analogue circuits
-Audio rectification
-Bandwidth, level and balance
-Isolation
-Application of filters
-Filter configuration
-Parasitic reactance’s
-Three-terminal capacitors
-I/0 filtering
-Ferrite’s

Audience
This course would particularly suit electronics design engineers, PCB layout engineers and technician engineers involved with circuit design.

Lecturers
Tim Williams
EMC and Circuit Design Consultant
Qualifications: BSc in Electronic Engineering.

He is the author of "The Circuit Designer`s Companion" (Butterworth Heinemann 1991) and "EMC for Product Designers" (second edition, Butterworth Heinemann 1996), now regarded as a standard reference for design engineers needing to meet the EMC Directive, and has written and presented numerous articles, conference papers and seminars internationally on circuit design and EMC.

Further information
David Jullien
Project Manager
Technical Certification and Training
TUV Product Service Ltd
Tel: +44 (0) 1329 443512
Fax: +44 (0) 1329 443421
Email: djullien@tuvps.co.uk