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Si3474 - Ethernet Port PoE PSE Controllers

Description

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Features

  • a fully-programmable architecture that enables powered device (PD) disconnect using dc-sense algorithms, a robust multipoint detection algorithm, software configurable per-port current and voltage monitoring, and programmable current limits to support the IEEE 802.3af, 802.3at, and 802.3bt standards. Intelligent protection circuitry includes input undervoltage detection, output current limit, and short-circuit protection. The Si3474 operates autonomously or by host processor control through a tw.

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Datasheet preview – Si3474

Datasheet Details

Part number Si3474
Manufacturer Skyworks
File Size 1.38 MB
Description Ethernet Port PoE PSE Controllers
Datasheet download datasheet Si3474 Datasheet
Additional preview pages of the Si3474 datasheet.

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Full PDF Text Transcription

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Si3474 Data Sheet Up to four 802.3bt or eight 802.3at Ethernet Port PoE PSE Controllers The Si3474 is a fully programmable, 50 to 57 V power management controller for IEEE 802.3af, 802.3at, and 802.3bt compliant Power Sourcing Equipment (PSE). Designed for use in PSE endpoints (switches), the Si3474 integrates eight independent ports, each with the IEEE-required powered device (PD) detection and classification functionality. When used in 802.3af/802.3at (two-pair power) mode each PSE port supports one Ethernet connection, for a total of eight PoE Ethernet connections. 802.3bt operation (four-pair power) uses two PSE ports per Ethernet connection, for a total of four PoE Ethernet connections.
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