PoE SoC Has 2-kV Integrated Isolation
A Power over Ethernet (PoE), Power System-on-a-Chip (Power SoC) with 2kV integrated isolation, the AS1854 from Akros Silicon eliminates opto-couplers and integrates functionality of up to nine separate ICs, including a third-generation IEEE 802.3af/at PD controller and quad-output digital power DC-DC converters. Features of the 64-pin 9x9 QFN-packaged device include direct digital management of both isolated primary-side power and secondary-side system power as well as cross-isolation DC-DC timing management and digital power control.
916-351-8100, www.AkrosSilicon.com 
For more details on Akros GreenEdge technology, see http://www.AkrosSilicon.com/GreenEdge .