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AN315

Part Number	AN315
Manufacturer	Silicon Laboratories
Description	ROBUST ELECTRICAL SURGE IMMUNITY
Published	Jan 13, 2009
Detailed Description	AN315 ROBUST ELECTRICAL SURGE IMMUNITY F O R P O E PD S T H R O U G H I N T E G R A T E D P R O T E C T I O N 1. Introdu...
Datasheet	AN315 PDF File

Overview

AN315 ROBUST ELECTRICAL SURGE IMMUNITY F O R P O E PD S T H R O U G H I N T E G R A T E D P R O T E C T I O N 1.
Introduction The Si3400 and Si3401 Power over Ethernet (PoE) powered device (PD) controllers are designed in an efficient Silicon on Insulator (SOI) process technology, which enables the integration of a robust surge protection function.
Competitive PoE PD devices require external transient voltage suppressors (TVS), such as an SMAJ58A, to provide surge protection.
However, due to their inherently wider range of clamping voltage specifications, external TVS-based protectors typically necessitate the use of 100 V processes for the PD controller device.
This note discusses some of t...

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