AN315 Datasheet (Silicon Laboratories) - ROBUST ELECTRICAL SURGE IMMUNITY

AN315, ROBUST ELECTRICAL SURGE IMMUNITY

of Si3400 Protection Si3400 and Si3401 protection consists of a stack of ten, high-current 6.2 V Zener diodes.

These lower-voltage Zener diodes have a lower temperature and process variation than a higher voltage Zener clamp, such as an SMAJ58A.

Consequently, the range of initial breakdown for the c

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 the