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Si3474 Datasheet Up To Four 802.3bt Or Eight 802.3at Ethernet Port Poe Pse Controller

Manufacturer: Silicon Laboratories

Overview: 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 pliant 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.

Key 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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More Datasheets from Silicon Laboratories

Part Number Description
SI3400 FULLY-INTEGRATED 802.3-COMPLIANT PD INTERFACE AND SWITCHING REGULATOR
SI3401 FULLY-INTEGRATED 802.3-COMPLIANT PD INTERFACE AND SWITCHING REGULATOR
SI3402-B FULLY-INTEGRATED 802.3-COMPLIANT POE PD INTERFACE AND LOW-EMI SWITCHING REGULATOR
Si3406 Fully-Integrated IEEE 802.3-Compliant POE+ PD Interface and High-Efficiency Switching Regulators
Si34061 Fully-Integrated IEEE 802.3-Compliant POE+ PD Interface and High-Efficiency Switching Regulators
Si34062 Fully-Integrated IEEE 802.3-Compliant POE+ PD Interface and High-Efficiency Switching Regulators
Si3452 QUAD HIGH-VOLTAGE PORT CONTROLLER
Si3453 QUAD HIGH-VOLTAGE PORT CONTROLLER
SI3454 QUAD IEEE 802.3AT POE PSE CONTROLLER
SI3459 OCTAL IEEE 802.3AT POE PSE CONTROLLER

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