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Controllers promise more efficient Power over Ethernet

18 Oct 2012

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Texas Instruments Inc. (TI) has unleashed a couple of power management ICs (PMICs) that combine a Power over Ethernet powered device (PD) manager with a DC/DC controller. The TPS23751 and TPS23752 controllers deliver high conversion efficiency over a wide load range and light load efficiency that is 20 per cent higher than other solutions on the market, boasted the company.

The ICs are geared for IEEE 802.3 at type 2 (high-power) compliant PoE designs used in IP phones, surveillance cameras, wireless access points and other industrial applications. The TPS2378 features IEEE 802.3 type 2 compliance and is interoperable with the UPOE Ethernet implementation, which delivers 25.5-51W over Ethernet CAT-5 cables using the four-pair technique. The TPS2379 delivers higher output power capability with the addition of an external FET to control loads from 50-100W.

The high-power PoE controllers and power manager with integrated DC/DC solutions are available to sample and purchase today from TI and its authorised network of distributors. Packaging and suggested retail pricing in 1,000-unit quantities are as follows: TPS23751 16-pin TSSOP at $1.50, TPS23752 20-pin TSSOP at $1.50, TPS2378, 8-pin SOPowerPAD at $1 and TPS2379, 8-pin SOPowerPAD at $1.

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