Si3452 PSE

Si3452 Quad Port PoE+ PSE Controller Block Diagram

The Si3452 is an IEEE 802.3at™ (D4.2) compliant, quad-port power over Ethernet (PoE) controller for power sourcing equipment (PSE). The Si3452 PoE PSE solution is intended for use in endpoint (switch) or midspans designed to deliver power to PoE PDs, such as multi-radio wireless access points, VoIP phones, pan-tilt-zoom (PTZ) video surveillance cameras, Point-of-sale terminals, and industrial automation equipment.

The PoE PSE solution is the industry’s most energy-efficient, quad-port PoE PSE controller. This device supports PoE PSE systems complying with IEEE’s existing 15 W per port PoE standard, as well as the recently-ratified, 30 W per port “PoE+” standard. For proprietary applications, higher power levels to 40 W per port are supported.

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Features

Quad port PoE / PoE+ PSE controller
IEEE 802.3at™ compliant
Programmable current limits for PoE (15.4 W) and PoE+ (30 W, Class 4)
Supports proprietary applications up to 40 W per port
Integrated, low on-resistance power FETs (0.3 Ω) with current-sense circuitry
Integrated transient voltage surge suppressors
Proprietary “V3” 3-point detection algorithm
Supports 1-Event and 2-Event classification
Choice of disconnect algorithms:
Proprietary “dV/dt disconnect” (Si3452)
Embedded MCU enables real-time monitoring of port current and voltage
Power policing support
Comprehensive fault protection circuitry
Supply UVLO
Output current limit and short circuit protection
Foldback current limiting
Dual-threshold thermal overload
Fault source reporting for intelligent port management
Extended commercial (–10 to 85 °C) and industrial (–40 to 85 °C) operating temperatures
6×6 mm, 40-pin QFN
RoHS-compliant
UNH Interoperability Lab test reports

Applications

Endpoints (switches)
Midspans (power injectors)
High-power PoE systems:

Pan/Tilt/Zoom cameras
IEEE 802.11n WAPs
Multi-radio WAPs
Security and RFID systems

Industrial automation
Networked audio
IP phone Systems
MAN WAPs
WiMAX systems

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Data Sheet (5)

Document Name	Description	Version	Last Updated
Si3452.pdf	Si3452 Data Sheet	1.2	8/31/2011
Si3453.pdf	Si3453 Data Sheet	1.2	8/31/2011
Si3480.pdf	Si3480 Data Sheet	1.0	10/18/2010
Si3482.pdf	Si3482	0.1	10/18/2010
Si3500.pdf	Si3500 Data Sheet	1.1	11/4/2009

User Guides (4)

Document Name	Description	Version	Last Updated
Si3452MS8-KIT.pdf	Si3452MS8-KIT User's Guide	0.5	1/22/2011
Si3452PMGUI-UG.pdf	Si3452PMGUI User's Guide	0.2	10/8/2010
Si3480MS8-KIT.pdf	Si3480MS8-KIT User's Guide	0.2	10/18/2010
Si3482_Smart_PSE-24-KIT.pdf	Si3482_Smart_PSE-24-KIT User's Guide	0.2	10/18/2010

Application Notes (1)

Document Name	Description	Version	Last Updated
AN380.pdf	AN380: Robust Electrical Surge Immunity for PoE PSEs through Integrated Protection	0.2	11/4/2009

White Papers (2)

Document Name	Description	Version	Last Updated
Integrating-FETs-for-Power-over-Ethernet-Applications.pdf	Integrating FETs for Power over Ethernet Applications
Integrating FETs for Power over Ethernet Applications.pdf	Integrating FETs for Power over Ethernet Applications

Miscellaneous (1)

Document Name	Description	Version	Last Updated
Si3452MS8_UNHReports.zip	Si3452MS8 UNH Reports

PCN (6)

Document Name	Description	Version	Last Updated
1105201 Si3452 Si3453 Shipment Media Change Std.pdf	1105201 Si3452 Si3453 Shipment Media Change Std
1110051 C-Pak as a Tape and Reel Supplier std.pdf	1110051 C-Pak as a Tape and Reel Supplier std
1201111 Si3452 Si3453 Firmware Revision Std.pdf	1201111 Si3452 Si3453 Firmware Revision Std
1104011-Cancelled-ASEKR Die Bond Adhesive – Japan Earthquake and Tsunami Disaster Recovery.pdf	Cancelled-ASEKR Die Bond Adhesive – Japan Earthquake and Tsunami Disaster Recovery
1007192.pdf	Si3452, Si3453 Package Temp Range Improvement-Std
1012281.pdf	Si3452/Si3453 Datasheet Rev 1.2 Std

PoE PSE Evaluation Kits

Product Matrix

Part Number	Available Documents	Temperature Range	Description	Maximum Output Power	Package
Si3452A-B01-GM	Data Sheet	-10 to 85ºC	Quad PoE+ PSE Controller; Alt: A; PoE; Auto; dV/dt	40 W	40-pin QFN
Si3452A-B01-IM	Data Sheet	-40 to 85ºC	Quad PoE+ PSE Controller; Alt: A; PoE; Auto; dV/dt	40 W	40-pin QFN
Si3452-B01-GM	Data Sheet	-10 to 85ºC	Quad PoE+ PSE Controller; Alt: A; PoE; Shutdown; dV/dt	40 W	40-pin QFN
Si3452-B01-IM	Data Sheet	-40 to 85ºC	Quad PoE+ PSE Controller; Alt: A; PoE; Shutdown; dV/dt	40 W	40-pin QFN
Si3452B-B01-GM	Data Sheet	-10 to 85ºC	Quad PoE+ PSE Controller; Alt: B; PoE; Auto; dV/dt	40 W	40-pin QFN
Si3452C-B01-GM	Data Sheet	-10 to 85ºC	Quad PoE+ PSE Controller; Alt: A; PoE+; Auto; dV/dt	40 W	40-pin QFN
Si3452D-B01-GM	Data Sheet	-10 to 85ºC	Quad PoE+ PSE Controller; Alt: B; PoE+; Auto; dV/dt	40 W	40-pin QFN
Si3453A-B01-GM	Data Sheet	-10 to 85ºC	Quad PoE+ PSE Controller; Alt: A; PoE; Auto; DC	40 W	40-pin QFN
Si3453-B01-GM	Data Sheet	-10 to 85ºC	Quad PoE+ PSE Controller; Alt: A; PoE; Shutdown; DC	40 W	40-pin QFN
Si3453B-B01-GM	Data Sheet	-10 to 85ºC	Quad PoE+ PSE Controller; Alt: B; PoE; Auto; DC	40 W	40-pin QFN
Si3453C-B01-GM	Data Sheet	-10 to 85ºC	Quad PoE+ PSE Controller; Alt: A; PoE+; Auto; DC	40 W	40-pin QFN
Si3453D-B01-GM	Data Sheet	-10 to 85ºC	Quad PoE+ PSE Controller; Alt: B; PoE+; Auto; DC	40 W	40-pin QFN
Si3480	Data Sheet	-40 to 85 °C	8-port power management controller	30 W	24-pin QFN
Si3482	Data Sheet	-40 to 85 °C	48-port power management controller	30 W	24-pin QFN
Si3500-A-GM	Data Sheet	-40 to 85ºC	High Voltage DC-DC Controller (-42 to -57 V input range)	17 W	20-pin QFN

The Si3452/53 controllers enable each port’s power supply voltage and current to be measured and monitored in real-time and accessed via the Si3452’s industry-standard I²C interface, enabling sophisticated system-level power management and easing compliance with emerging energy efficient Ethernet standards.

Accelerating time-to-market, the Si3452 is part of a complete PoE PSE chipset which includes Si840x I2C isolators, the Si3500 high voltage DC-DC controller, comprehensive reference designs and the PSE power manager portfolio for rapid integration with popular Ethernet switch chipsets. A comprehensive 8-port midspan reference design kit(Si3452MS8-KIT) includes a complete schematic, layout files and bill-of-materials (BOM) as well as an 8-port power management reference design based on the hardware-configured Si3480 (Si3480MS8-KIT) and a 24-port power manager reference design based on the GUI-configured Si3482 (SMARTPSE24-KIT).

Isolation and Power

Title Content
Si3452/53 PSE Quad port PoE/PoE+ PSE Controller

Features

Applications

Documentation Expand All Collapse All

Data Sheet (5)

User Guides (4)

Application Notes (1)

White Papers (2)

Miscellaneous (1)

PCN (6)

PoE PSE Evaluation Kits

Product Matrix

Education Center

Overview

Documentation

Tools

Product Matrix

Education

More Info

Product Pricing and Availability

Isolation and Power

Title Content​Si3452/53 PSE Quad port PoE/PoE+ PSE Controller

Features

Applications

Documentation Expand All Collapse All

Data Sheet (5)

User Guides (4)

Application Notes (1)

White Papers (2)

Miscellaneous (1)

PCN (6)

PoE PSE Evaluation Kits

Product Matrix

Education Center

Overview

Documentation

Tools

Product Matrix

Education

More Info

Product Pricing and Availability

Buy/Sample

Support

Quality

Knowledge Base

Title Content
Si3452/53 PSE Quad port PoE/PoE+ PSE Controller