Microsemi EEPoE ICs enable more energy-efficient network devices

IRVINE, USA: Microsemi Corp. announced a family of highly integrated Power over Ethernet (PoE) ICs for developing more energy-efficient IP phones and cameras, WLAN access points and other powered devices (PDs).

Microsemi's PD70x0x family of Energy-Efficient PoE (EEPoE) front-end PD ICs enables PDs to receive up to 51 watts of power over all four pairs of the same standard Ethernet network cabling that is used to carry data.

"We have leveraged our PoE experience plus our long heritage in power electronics to create highly integrated PD solutions that support the full range of PD powering requirements," said Paul Pickle, senior VP of Microsemi's Integrated Circuit Group. "These solutions enable the same energy-efficient four-pair powering that has been proven in our solutions for Power Sourcing Equipment, and reduce the size, cost and complexity of next-generation energy-efficient PDs."

Key features and benefits include:
* Improved power efficiency for network PDs.
* Support for four-pair powering in a single IC with built-in PWM controller, enabling PDs to receive a full 51 watts of power while reducing cable losses by over 50 percent.
* 25Kohm input signature resistor disconnection, eliminating up to 0.13W of constant power dissipation.
* 0.6ohm worst-case isolating switch, reducing power dissipation up to 40 percent compared to alternative solutions.
* Low Power Mode, reducing standby power losses by 80 percent.