TPS23757 PoE Interface & DC/DC Controllers Texas Instruments TPS23757 PoE Interface and DC/DC Controllers are optimized for isolated converters. The PoE interface of the TI TPS23757 supports the IEEE 802.3at (draft) standard for a type 1 PD, which is equivalent to the 13W standard of IEEE 802.3-2008. The TI TPS23757 supports a number of input voltage ORing options, including highest voltage, external adapter preference, and PoE preference. The DC/DC controller of the TPS23757 features two complementary gate drivers with programmable dead time.