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PoE controller rolls for powered device apps

Posted: 20 May 2009     Print Version  Bookmark and Share

Keywords:Power-over-Ethernet  DC/DC converter  PoE solution  powered device 

TPS23754

Texas Instruments Inc. has rolled out a high-efficiency, high-power Power-over-Ethernet (PoE) controller for 13-watt or 26-watt powered device (PD) applications, such as IP phones, wireless access points or security cameras.

Fully compliant to the IEEE 802.3at draft 4.0 standard, the integrated TPS23754 supports DC/DC converter topologies that can achieve higher than 90 per cent power conversion efficiency, which reduces heat and increases reliability of the system. The single-chip PoE solution leverages a 100-V manufacturing process to provide a robust solution in a 13-watt or 26-watt design.

Along with the TPS23754, TI is sampling the TPS23756 to support auxiliary input voltages as low as 12 V, allowing a PoE designer to use popular, inexpensive 12-V wall adapters. Additionally, the TPS23757 will support 13-W and below applications requiring the higher efficiency DC/DC topologies. Both the TPS23756 and TPS23757 will be available in the third quarter.

The TPS23754 is available now in a HTSSOP-20 package and is priced at Rs.96.17 ($1.90) in quantities of 1,000. The TPS23756 will be available in third quarter in the same quantities and pricing. The TPS23757, also available in third quarter, is priced at Rs.83.52 ($1.65) in quantities of 1,000.

Want to learn more about PoE? Click here!





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