16 November 2009

'Green' PoE/PoE+ quad PSE controller

Mixed signal IC specialist, Silicon Laboratories has introduced the Si345x family, which it claims is the industry's most integrated, energy efficient quad PoE power sourcing equipment (PSE) controllers.

Able to support four independent PoE (IEEE 802.3af) and PoE+ (IEEE 802.3at) PSE ports, the Si345x controllers offer real time power measurement capabilities, energy efficient powered device detection and disconnect algorithms, and the low on resistance power field effect transistors and sense resistors.

According to Silicon Labs, these features enable smaller, highly energy efficient and lower cost PoE/PoE+ Ethernet switches and midspans. They are designed to power multi radio wireless access points, industrial automation systems, VoIP phones and building security and surveillance systems.

The recently ratified IEEE 802.3at PoE+ standard supports up to 30W per port, enabling PoE to be deployed across power hungry applications. The Si345x controllers incorporate high precision current and voltage monitoring capability to measure the power consumed by each port in real time, enabling systems to maintain tighter control of power allocation.

This approach enables smaller power supplies and lower supply overhead and gives system administrators visibility into how much power is allocated to and consumed by each port in their network. IEEE's link layer discovery protocol power management is fully supported by the Si3452 and its Power Manager Software Development kit, enabling dynamic power allocation.

Author
Chris Shaw

Supporting Information

Websites
http://www.silabs.com

Companies
Silicon Laboratories Inc

This material is protected by Findlay Media copyright
See Terms and Conditions.
One-off usage is permitted but bulk copying is not.
For multiple copies contact the sales team.

Do you have any comments about this article?


Add your comments

Name
 
Email
 
Comments
 

Your comments/feedback may be edited prior to publishing. Not all entries will be published.
Please view our Terms and Conditions before leaving a comment.

Related Articles

€55m power electronics project

Described as one of the most important European energy efficiency research ...

Processor for wearables

Toshiba's ApP Lite processor provides integrated sensing, data processing and ...

Converters cut space by 50%

The MTU2 series of surface mounted 2W DC/DC converters is claimed to be 50% ...

Building the foundations

There isn't a sector of the electronics industry that operates without the use ...

Power at the heart of Europe

Tim Fryer looks forward to the upcoming PCIM exhibition and conference, taking ...

A/D converters get it right

Successive approximation A/D converters, with resolutions of up to 18bit and ...

Power electronics in EVs

This whitepaper presents a review of power electronics systems in electric ...

EV power electronics

This whitepaper from Altera describes the benefits of using fpga based control ...

Remote management

Out of Band (OOB) remote management can help to optimise the total cost of ...

Shunt voltage reference

The ZXRE330 3.3V shunt voltage reference from Diodes has been introduced to ...

Half and full-bridge drivers

The industry's first small form factor half and full-bridge drivers have been ...

Dual DC/DC converters

Linear Technology has announced the LT8471, a dual DC/DC converter that ...

PCIM Europe 2014 Conference

20th – 22nd May 2014, Nuremburg, Germany

Power management forum

28th October 2014, Williams F1 Centre, Oxford

Class 0.1 metering SoC

Discover TI's Class 0.1, metering System-On-Chip Evaluation Boards: ...

When to use a pre-driver

What is the difference between a pre-driver and an integrated motor driver and ...

Motor diagnostics innovations

Texas Instruments Innovator Tim Adcock explains in the latest whiteboard video ...

Packing a powerful punch

Power is back when it comes to industrial system performance and efficiency. ...

Search for software testers

Is there anybody out there?! *tumbleweed* This is how it feels looking ...

Powering ahead

Too often in the past, electronics industry initiatives have been announced ...

Terence Watson

Ask Terence Watson about power electronics and you're left in no doubt of his ...

Keith Attwood, ceo, e2v

Many UK based technology companies can trace their origins to the years ...

Steve Edwards, cto, CWE

Graham Pitcher finds out that COTS is now being applied at the system level.