PoE PD Design Feature - Power Electronics Technology, June 2009


PoE PD Power SoC Manages Remote Device Power


Augmenting the move to Power-over-Ethernet (PoE), the AS18×4 family of controller ICs from Akros Silicon integrates the company's “GreenEdge™” high-voltage, high-speed-isolation and power-conversion technology for powered devices (PD). The power-supply system-on-a-chip (SoC) family includes a Type 1- (IEEE® 802.3af, 13 W) and Type 2- (IEEE® pre-802.3at, 25.5 W)-compliant PD controller with four dc-dc converters, resulting in a complete power-management solution that boasts the industry's smallest footprint and requires only a few external components.