Integrated 100V Power Over Ethernet PD Interface and PWM Controller with Aux Support

Features:

This POE_PHYTEREV-I board is a seamless design demonstrating National's LM5072 PoE product (capable of 24W) and DP83848I (single port 10/100Mb/s) Ethernet PHYTER® product. While both the LM5072 and the DP83848 Ethernet PHY device have many advanced and enticing features, this specific board is designed to demonstrate a subset of those features, specifically Power over Ethernet. Two versions of this board are available. The - I version has a RJ-45 connector that with integrated Ethernet magnetics. The -E version has discrete RJ-45 connector and Ethernet magnetics. For detailed information about the complete functions and features of the LM5072 and DP83848 devices, refer to the relevant datasheets.

Ethernet:

• Bel-Stewart Integrated RJ45 Jack
• DP83848I with (drop-in compatible with DP83848C)
• 3 PHY Status LEDs
• Connections for the following interfaces:
       - MII/RMII Interface (IEEE 802.3 defined connector)
       - RJ-45 Cat-V Ethernet cable connector
       - JTAG header
       - 25MHz_OUT header
       - Header for "ribbon cable" connection to MII/RMII
  
• On-board clock - Crystal/Oscillator Dual Footprint

Power Over Ethernet:

• Isolated output voltage 3.3V
• Maximum output current: 7.3A
• Maximum output power: 24W
• Input voltage ranges:
       - PoE input voltage range: 39 to 57V
       - AUX input voltage range: 22 to 57V
  
• Measured maximum efficiency
       - DC to DC converter efficiency: 90% at 6A
       - Overall efficiency (including the input diode bridge): 86% at 6A
  
• Overall Board Size: 5.50" x 3.96" x 0.70"
• Switching frequency: 250 kHz
• Optional input common-mode filter

Applications:

High Power PD (PoE Terminology - Powered Device) applications in which the maximum power exceeds
the IEEE 802.3af's 12.95W limit)

Related Parts:

• LM5072 - Integrated 100V Power Over Ethernet PD Interface and PWM Controller with Aux Support
• Phyter Single Port 10/100 Mb/s Ethernet Physical Layer Transceiver
• DP83848C Commercial Temperature, LQFP Package
• DP83848I Industrial Temperature, LQFP Package
• DP83848YB Extreme Temperature, LQFP Package
• DP83848M Commercial Temperature, Mini LLP Package
• DP83848T Industrial Temperature, Mini LLP Package
• DP83848H Extreme Temperature, Mini LLP Package
• DP83848J Commercial Temperature, Mini LLP Package with Link and Speed LED Indicators
• DP83848K Industrial Temperature, Mini LLP Package with Link and Speed LED Indicators

• AN-1474 - Application Note 1474 The LM507X Family of PoE Devices: Frequently Asked Questions (FAQs)
• AN-1875 - Application Note 1875 LM5073HE Evaluation Board With Active Bridge
• AN-1574 - Application Note 1574 LM5073 Evaluation Board
• AN-1455 - Application Note 1455 LM5072 Evaluation Board
• AN-1430 - Application Note 1430 LM5071 Evaluation Board
• AN-1358 - Application Note 1358 LM5070 'AE' Evaluation Board
• AN-1408 - Application Note 1408 Designing Power Over Ethernet Using LM5070 and DP83865
• AN-1521 - Application Note 1521 POEPHYTEREV-I / -E User Guide
• AN-1346 - Application Note 1346 LM5070 'HE' Evaluation Board