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Front-end solution supports Power-over-HDBaseT

Posted: 24 Dec 2012     Print Version  Bookmark and Share

Keywords:front end  power  PoE  Ethernet  network 

Microsemi Corp. debuts the PD70210/PD70211 front-end power device (PD) interface controllers for high-power HDBase-T and four-pair Power-over-Ethernet (PoE) applications.

The devices are compliant with Power-over-HDBaseT (PoH) and receive up to 95W using an internal FET. They enable wider reach for PoE communications applications including outdoor IP cameras, small cells, thin clients and monitors.

PoH has the same safety mechanisms of IEEE802.3at-2009, with detection performed separately on data and spare pairs, ensuring interoperability.

The devices are compliant with IEEE802.3af, IEEE802.3at and HDBaseT standards, with power being provided using HDBaseT or other two-pair/four-pair configurations. As the first solution of its kind, the device supports 95W in one IC with internal FET and operates at high efficiency levels.

Other key features include advanced classification block supporting two-event, three-event, four-event and six-event classifications; integrated 0.3Ω isolating switch and inrush current limiter; identification of which pairs of cable are receiving power; DC/DC input cap for fast discharge; on-chip thermal protection; internal surge protection and the PD70211 has a built-in synchronous current mode PWM controller.

The devices are suitable for both indoor and outdoor PoE and PoH applications. The PD70210 is offered in a Pb-free DFN-16 package and the PD70211 is offered in a QFN-36 package. Samples are available to qualified customers now.

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