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| TI Introduces First 26-Watt Power over Ethernet Controller for IP Surveillance Cameras and Phones
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Texas Instruments Incorporated (TI) (NYSE: TXN) today introduced a 26-watt Power
over Ethernet (PoE) controller that allows Ethernet-powered devices, such as IP
surveillance cameras, WiMAX access points and conference IP phones, to use twice
as much power from a standard Ethernet cable - without the need of an AC line.
TI will demonstrate the new power management integrated circuit (IC) in a
high-power PoE reference design at the ASIS International security conference in
San Diego, September 25-28. See: www.ti.com/sc06181.
TI's 8-pin,
TPS2376-H controller contains all of the features needed to develop an IEEE
802.3af-compliant powered device with innovative safety features including a
programmable, 600-mA current limit with thermal shutdown, auto-retry and fault
protection. The high-power device also allows a designer to implement a
non-standard powered device that draws up to 26 watts of power from power source
equipment (PSE) with a minimum of 52 volts of input and over 100 meters of CAT-5
Ethernet cable. The TPS2376-H supports voltage transients up to 100 V at 600-mA.
In addition, the device can operate at 24 V over an industrial temperature range
of -40C to 85C, enabling support of emerging Ethernet-powered medical and
industrial equipment.
Requiring a minimum number of external components,
the flexible TPS2376-H is housed in a PowerPad(TM) package with an integrated
0.6-ohm FET to minimize heat dissipation in the system. The controller's simple
front-end architecture gives designers increased flexibility when designing the
back-end power stage topology. In addition, the TPS2376-H eases powered device
startup capability with adjustable in-rush current limit and an auto-retry
feature, which provides automatic start-up on fault. The controller's power
conversion functionality includes several additional protection and low-noise
features, such as 15-kV system-level electrostatic discharge (ESD) capability,
adjustable undervoltage lockout and open drain power good
reporting.
Leading Power over Ethernet Technology Portfolio
TI
provides IEEE 802.3af-compliant powered device controllers and power sourcing
equipment manager ICs, which manage power in multiple Ethernet ports. Leveraging
its volume production capabilities and systems expertise, the company has
shipped PoE circuits to a broad base of customers around the world. TI is a
founding member of the PoETec Consortium, University of New Hampshire's PoE
Consortium and chairs the High-Power PoE task force in the IEEE 802.3at
standards committee.
Available Today
The TPS2376-H powered device
controller is available in volume today from TI and its authorized distributors.
Packaged in an 8-pin, SOIC package, suggested resale pricing for both devices is
$1.25 each in quantities of 1,000 units. Evaluation modules of the TPS2376-H,
complete reference designs, application notes and technical documentation are
available through power.ti.com/poe.
About Texas Instruments
Texas
Instruments Incorporated provides innovative DSP and analog technologies to meet
our customers' real world signal processing requirements. In addition to
Semiconductor, the company includes the Educational & Productivity Solutions
business. TI is headquartered in Dallas, Texas, and has manufacturing, design or
sales operations in more than 25 countries.
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