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Powering the Future of Power over Ethernet (PoE)

Explore the latest IEEE PoE standard and how our new PoE devices simplify adding PoE to any Ethernet connected device.

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Understanding the IEEE 802.3bt PoE Standard

Confused by PoE technology? In this whitepaper we demistify PoE technology and review the key features behind the new 802.3bt standard that supports 90 W of power. 

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  Powered Devices PSE Controllers
IEEE Standard 802.3af, 802.3at, 802.3bt 802.3af, 802.3at, 802.3bt
Maximum Power Output 15 W class 1-3
30 W class 4
90 W class 5-8
15 W class 1-3
30 W class 4
90 W class 5-8
DC DC Converter Integrated dc dc controller Integrated dc dc controller
Internal/External FETs Internal or External External
Smallest Package Size 4x4 mm QFN 5x7 mm QFN
  • Buck
  • Flyback
  • Isolated Flyback
  • Mid-Span
  • End-Span
Featured Product Class 8 90 W Devices Single Port PSE
  Power Management
Coulomb Counting Yes
Lowest Quiescent Current  150
Output Voltage 1.7 - 5.2 V
Output Voltage Rails 3
Vdd Range 0.8 - 5.5 V
Temp Range -40 to 85 ºC
Package 3x3 QFN20
Featured Product EFP01 Power Management IC
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