linear DESIGN FEATURES LTJournal-V21N2-2011-07 service manual

About this manual

This document introduces LTPoE++, a proprietary standard by Linear Technology that extends Power over Ethernet (PoE) capabilities up to 90W of delivered power. It addresses the growing demand for higher power in applications such as picocells, base stations, and pan-tilt-zoom cameras.

What's inside

• History of PoE
• LTPoE++ Evolution
• PSE and PD Definitions
• Power Delivery Matrix
• Backward Compatibility

Frequently asked questions

What is the maximum delivered power of an LTPoE++ PD?

The LTPoE++ specification allocates up to 90W of delivered power to a powered device.

Is the LTPoE++ standard backward compatible with existing PoE devices?

Yes, it is backward compatible and interoperable with existing Type 1 and Type 2 PDs.

What are some typical applications for LTPoE++ powered devices?

Typical applications include power-hungry picocells, base stations, or heaters for pan-tilt-zoom cameras.