IC Duo Produces Power Source Equipment Controller for 12 Isolated PoE Ports

摘要

Power over Ethernet (PoE) systems employ a Power Source Equipment (PSE) controller that sends power and data to a Powered Device (PD). A pair of ICs combine to produce a 12-port PSE controller that creates an isolated environment consistent with PoE specifications. The LTC4270 and LTC4271 from Linear Technology form an isolated 12-port Power Source Equipment (PSE) controller for use in Power over Ethernet (PoE) systems. The 12 independent PSE ports send power and data to the Powered Device (PD). In contrast with traditional approaches, it is a simpler, lower component count design, reducing board space and lowering system costs.