New from Texas Instruments are two power management ICs that combine a Power-over-Ethernet (PoE) powered device (PD) manager with a DC/DC controller. The TPS23751 and TPS23752 are designed for use in IEEE 802.3at type 2 (high-power) compliant PoE designs, used in IP phones, surveillance cameras, wireless access points, as well as various industrial applications. The TPS2378 features IEEE 802.3 type 2 compliance and is interoperable with the UPOE Ethernet implementation, which delivers 25,5 W to 51 W over Ethernet CAT-5 cables utilising the four-pair technique. The TPS2379 delivers higher output power capability with the addition of an external FET to control loads from 50 W to 100 W.
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