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TI rolls out IC controller, PoE power module

Posted: 19 May 2004 ?? ?Print Version ?Bookmark and Share

Keywords:texas instruments? ic controller? power-over-ethernet? poe? power module?

Promising to help customers harness power delivered over a standard Ethernet cable, Texas Instruments Inc. has launched an IC controller and a Power-over-Ethernet (PoE) plug-in power module that reduces design time and eases implementation of Ethernet-powered industrial and commercial devices.

The new TPS2375 controller effectively manages discovery, classification and delivery of direct-current (DC) power to a powered device (PD). According to the company, the IC offers increased flexibility and performance as it manages the interface between the power source equipment (PSE) and a commercial or industrial PD, while providing necessary power management control and protection.

The TPS2375 was created using TI's linear Bi-CMOS, silicon-on-insulator (LBC-SOI) process technology, which lets the controller withstand transients up to 100V and operate over an industrial temperature range of -40C to 85C. It features 15kV system-level electrostatic device (ESD) capability, and an internal 0.6-ohm FET to minimize heat dissipation in the system.

Claimed by the company as the industry's first, the PTB48540 module reduces time to market for designers of specialized, Ethernet-powered IP phone consoles, security systems, card readers, point-of-sale terminals or other systems that need to quickly detect, classify and deliver up to 10W of DC power.

Requiring a small external Power-over-Ethernet isolation transformer, the fully IEEE 802.3af-compliant plug-in power module provides a complete power solution for PDs and measures 41-by-38-by-8.5mm.

The TPS2375 controller sits inside the module, as well as an electromagnetic interference (EMI)/input voltage transient filter, and both data and spare line bridge networks. The module is available in 3.3V, 5V, or 12V outputs with through-hole or surface-mount device mounting options.

The TPS2375 is packaged in an 8-pin (SOIC) or 8-pin thin TSSOP, while the PTB48540 comes in a 13-pin, double-sided, through-hole or surface-mount package. Suggested resale pricing is $1.25 each for the TPS2375 and $26 for the PTB48540.

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