Power Over Ethernet (PoE) Solutions

Universal PoE compatibility standards help ensure that devices are powered efficiently and safely. To keep up with the increasing power demands of new technology, a new universal standard (IEEE 802.bt) was developed that provides up to 100 Watts of power. By solving the power demands challenge, IEEE 802.bt opens the door to a number of higher-power PoE applications including smart lighting and closed-circuit security cameras.

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You Need More Power - 100 Watt PoE-PD Controller

What is IEEE 802.3bt?

In PoE systems, power transfer is managed by some handshaking between the Power Sourcing Equipment (PSE) and Powered Device (PD). During this process, the PSE detects if the PD is PoE capable and determines power requirements based on defined device type and class.

Ratified in September 2018, IEEE 802.3bt differs from previous standards in two key ways:

  1. Increases the possible output power the PSE can provide by using all four pairs of wiring in the PoE cable
  2. Improves energy efficiency by recognizing two new types (3 and 4) and four new classes (5-8) of devices
Standard Power - PSE output Power - PD input Power - Useable for application
(85% efficency)
802.3af (PoE) 15.4W 13W 11W
802.3at (PoE+) 30W 25.5W 21.6W
802.3bt (PoE++)New* 90W 71.3W ...90W 21.6W...76.5W


Key Features
  • Provides up to 100 W of power
  • Allows total power to be split across two PD devices from a single PSE output
  • Improved energy efficiency (lower standby power)
  • Backwards compatible with previous IEEE standards
  • Autoclass Feature to automatically detect maximum power draw from the PD

Applications
  • Digital Signage
  • POS Terminals
  • USB Type C
  • Satellite Data Networks
  • PoE Connected Lighting
  • Video and VOIP Telephones
  • Security Cameras
  • Pico-base stations
  • Multiband Access Points


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PoE-PD Solutions

Using its unique high-voltage manufacturing process, ON Semiconductor has developed a new family of PoE solutions that are fully compliant with the IEEE 802.3bt specification. These solutions help enable designers to develop PoE systems that are economical and with improved energy efficiency.


PoE-PD ICs NCP1096
NCP1095
DC/DC Controllers NCP1566
MOSFETS FDMQ8203 (Greenbridge™ 1)
FDMQ8205 (Greenbridge™ 2) FDMC8622
ESD Protection ESD8004