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esd protection design seminar.ppt

esd protection design seminar.ppt
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esd protection design seminar,http://www.calmicro.comCalifornia Micro Devices * 1ESD Protection Design SeminarJim SutherlandSenior Applications Engineerhttp://www.calmicro.comCalifornia Micro Devices * 2Outline4 What is ESD?4 What damage can it cause?4 Why is the problem growing?4 What are the issues for the designer?4 How can we measure it?4 How can we protect equipment from ESD?http://www.calmicro.comCalifornia Micro Devices * 3What Is ESD?4 ESD = Electro Static Discharge4 Generation- Triboelectric (friction causes accumulation of charge)- Induction (field induces charge)4 Discharge- Dielectric (air) breakdown · Electric field increases when charged bodies approach each other - Current flow into circuitry http://www.calmicro.comCalifornia Micro Devices * 4ESD Damage of ICs4 Permanent- Oxide breakdown, shorts, opens, latch-up4 Temporary- Latch-up, ground bounce4 Latent- Degradation from an ESD eventhttp://www.calmicro.comCalifornia Micro Devices * 5ESD problem is growing4 Circuits/Systems- Old - Robust ICs & Low speed signals- New - Sensitive ICs & High speed signals4 Environment- Old - Manufacturing / Corporate - New - Home / Outdoors / Personhttp://www.calmicro.comCalifornia Micro Devices * 6ESD Issues for the Designer 4 Must meet ESD specifications4 Select ESD tolerant components4 Minimize signal degradation (from R,L & C)4 Board space / weight / proper design4 Component cost4 Assembly cost4 Lifetime cost (stability)4 Test the systemhttp://www.calmicro.co

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