High-Power PoE Controller delivers over 90% efficiency.June 2, 2009 -
Compliant to IEEE 802.3at draft 4.0 standard, TPS23754 is suited for 13 or 26 W powered device (PD) applications - IP phones, wireless access points, and security cameras. Single-chip solution leverages 100 V manufacturing process and supports isolated flyback and forward DC/DC converter topologies that can achieve higher than 90% power conversion efficiency. Along with power source selection priority, features include PD controller that supports up to 825 mA continuous current.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Texas Instruments, Inc. (TI)
12500 TI Blvd.
Dallas, TX, 75243-4136
USA
Texas Instruments' High-Power Power-over-Ethernet Controller can Deliver Greater than 90 Percent Efficiency
Integrated PoE Plus controller meets new standard for powered device applications
DALLAS, May 18 -- Texas Instruments Incorporated (TI) (NYSE: TXN) introduced today 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 percent 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. For product details and to request samples see: www.ti.com/tps23754-pr.
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.
Key features
-- Complementary auxiliary driver with programmable dead-time
-- PD controller supports up to 825-mA continuous current
-- Power source selection priority
-- Current and inrush limit
-- 100-V monolithic SOI process
Key benefits
-- Supports high-efficiency isolated flyback and forward DC/DC converter topologies
-- Implements IEEE 802.3at (draft 4.0) for PD applications requiring greater than 13 W
-- Natively supports external, local power sources with or without PoE power present
-- PD front end protects against current inrush and short circuits
-- Robust manufacturing process withstands voltage surges up to 100 V at the IC
Availability and pricing
The TPS23754 is available now in a HTSSOP-20 package and is priced at $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 $1.65 in quantities of 1,000.
Find out more about PoE and connect with TI by visiting the links below:
-- See TI PoE portfolio, tools and resources: www.ti.com/poe-pr
-- Get PoE design support on TI E2E Community: ti.com/poecommunity-pr
-- Find TI power management products and tools: www.ti.com/power-pr
-- TI's IP phone solutions: www.ti.com/voip-pr
About Texas Instruments
Texas Instruments (NYSE:TXN) helps customers solve problems and develop new electronics that make the world smarter, healthier, safer, greener and more fun. A global semiconductor company, TI innovates through manufacturing, design and sales operations in more than 25 countries. For more information, go to www.ti.com
Please refer all reader inquiries to:
Texas Instruments Incorporated
Semiconductor Group, SC-09047
Literature Response Center
14950 FAA Blvd.
Fort Worth, TX 76155
1-800-477-8924
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