New TI Power-over-Ethernet (PoE) controllers.TI announced two new Power-over-Ethernet (PoE) controllers that promise greater conversion efficiency for applications that require high efficiency over a wide load range.
According to the manufacturer, the TPS23751 and TPS23752 enable 80 percent efficiency at 20 percent load operation and maintains a "high efficiency" from very light to full load.
The controllers come with two powered device managers: The TPS2378 is IEEE 802.3 type 2 compliant and can be used with the UPOE Ethernet implementation for a power band between 25.5 W to 51 W over Ethernet CAT-5 cables. The TPS2379 has an external FET and scales from 50 W to 100 W. Both the TPS23751 and TPS23752 also include a DC/DC controller to convert input voltage to 3.3 V, 5 V or 12 V.
Tray pricing for the 16-pin TPS23751 and 20-pin TPS23752 is $1.50. The TPS2378 and TPS2379 are listed for $1 each.
Wolfgang GruenerWolfgang Gruener is a contributor to Tom's IT Pro. He is currently principal analyst at Ndicio Research, a market analysis firm that focuses on cloud computing and disruptive technologies, and maintains the conceivablytech.com blog. An 18-year veteran in IT journalism and market research, he previously published TG Daily and was managing editor of Tom's Hardware news, which he grew from a link collection in the early 2000s into one of the most comprehensive and trusted technology news sources.
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