Add Coordinated Overcurrent, Overvoltage Protection To PoE Equipment
by Matt Williams, global applications engineering manager, Tyco Electronics' Raychem circuit protection products, Electronic Design, Oct 02 2008
Focus:
Single-use fuses and resettable PPTCs can protect PoE equipment from overcurrent conditions. Meanwhile, clamping devices (such as MOVs and TVS diodes) and foldback or crowbar devices (such as gas discharge tubes and thyristor surge suppressors) can protect against overvoltage conditions. Each options has advantages and disadvantages.
What you’ll learn:
- How to protect power sourcing equipment (PSE) and powered devices (PDs) against overvoltage and overcurrent conditions (overview)
Notes:
ED's Ideas For Design
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