National Semiconductor | High-performance Analog

 

 LM5073   

100V Power Over Ethernet PD Interface with Aux Support from the PowerWise® Family
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Features

PD Interface

  • Fully Compliant IEEE 802.3af PD Interface
  • Versatile Auxiliary Power Options
  • 13V Minimum Front Auxiliary Power Range
  • 9V Minimum Rear Auxiliary Power Range
  • Programmable DC Current Limit up to 800 mA
  • 100V, 0.7Ω Hot Swap MOSFET
  • Integrated PD Signature Resistor
  • Integrated PoE Input UVLO
  • Inrush Current Limit
  • PD Classification Capability
  • Thermal Shutdown Protection
  • Line Over Voltage Protection
  • Complementary Open Drain Outputs for Controlling a DC-DC Converter
  • Power Good Indicator
  • Description

    The LM5073 Powered Device (PD) interface provides a high performance solution that is fully compliant to IEEE 802.3af for a PD connecting into Power over Ethernet (PoE) networks. The LM5073 provides the flexibility for the PD to also accept power from unregulated auxiliary sources such as AC adapters and solar cells in a variety of configurations. The low RDS(ON) PD interface hot swap MOSFET and programmable DC current limit extend the range of LM5073 applications up to twice the power level of IEEE 802.3af compliant devices. The 100V maximum voltage rating simplifies selection of the transient voltage suppressor that protects the PD from network transients. Control outputs for a separate DC-DC converter are provided to allow freedom to select the best DC-DC converter topology for the particular application.


    Applications

  • IEEE 802.3af Compliant PoE Powered Devices
  • Non-Compliant, Application Specific Devices
  • Higher Power Ethernet Powered Devices
  • Also Recommended
    LM5070Integrated Power Over Ethernet PD Interface And PWM Controller
    LM5071Compatible With Auxilary Power Sources, Such As 12 V AC Adapters
    LM5072100V PoE PD With Integrated PWM Controller



    Typical Application
    *click for larger image


    Block Diagram
    *click for larger image



    Typical Performance
    *click for larger image


    Parameters / ValuesLM5073 LM5070 LM5071 LM5072
    Input Min Voltage9 Volt 1.8 Volt 9.5 Volt 9 Volt
    Input Max Voltage100 Volt 75 Volt 60 Volt 100 Volt
    Special FeaturesIEEE 802.3af Compliant PD Interface, High Power PD Interface, 100V Hot Swap MOSFET, Adjustable DC Current Limit, Aux Power Interface Fully compliant IEEE 802.3af PD interface, error amplifier for non-isolated designs, leading edge blanking, high current gate drive Auxiliary power interface, Fully compliant IEEE 802.3af PD interface, Error amplifier for non-isolated designs, leading edge blanking, high current gate drive 100V PD hot swap MOSFET, adjustable DC current limit, Auxiliary power interface
    Output Power25 Watt 13 Watt 13 Watt 25 Watt
    TopologyAny DC-DC Converter Toplogy Single Ended Single Ended Single Ended
    FlybackYes Yes Yes Yes
    InvertingYes Yes Yes Yes
    Step-UpYes Yes Yes Yes
    Step-DownYes Yes Yes Yes
    RegTypeHot Swap Controller Switching Controller Switching Controller Switching Controller
    Temperature Min-40 deg C -40 deg C -40 deg C -40 deg C
    Temperature Max125 deg C 125 deg C 125 deg C 125 deg C
    PowerWiseYes Yes Yes Yes

    Datasheets
    TitleSizeDateOther
    Language
    LM5073 100V Power Over Ethernet PD Interface with Aux Support439
    Kbytes
    16-Feb-10   


    Application Notes
    TitleSizeDateOther
    Language
    AN-1875: Application Note 1875 LM5073HE Evaluation Board With Active Bridge230
    Kbytes
    2-Jul-08 
    AN-1574: Application Note 1574 LM5073 Evaluation Board464
    Kbytes
    24-Apr-07 


    Other Technical Documents
    TitleTypeDate
    Get The Scoop On How To Power Share Between Isolated PoE ChannelsExternal Article 2007-06-04
    Power Supply Design for Power-over-Ethernet ApplicationsPower Designer 2007-03-22

    Part Number(s)
    (NSID)
    Top ViewAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM5073MH/NOPB

    LM5073MH

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

    Samples
    DistributorRegionQty
    ARROWWorldwide282
    AVNET-EMWorldwide232
    DIGI-KEYWorldwide93
    FARNELLEurope and Asia424
    NEWARKAmericas264
    RS COMPONENTSWorldwide45
    TAYLORAmericas282
    $1.30 each at 1K+ pcsrail
    of
    94
    LM5073MHX/NOPB

    LM5073MHX

    RoHS Status


    TSSOP EXP PAD
    Full production
    Lead Time: 6 weeks

     
    DistributorRegionQty
    AVNET-EMWorldwide2500
    DIGI-KEYWorldwide0
    $1.30 each at 1K+ pcsreel
    of
    2500

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM5073.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM5073 is located at RoHS Status.

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM5073EVAL
    100V Power Over Ethernet PD Interface with Aux SupportFull production


     
    DistributorRegionQty
    AVNET-EMWorldwide1
    DIGI-KEYWorldwide0
    MOUSERWorldwide1
    $72.00 each1

    Features:

    • Fully Compliant IEEE 802.3af PD Interface
    • Versatile Auxiliary Power Options
    • 13V Minimum Front Auxiliary Power Range
    • 9V Minimum Rear Auxiliary Power Range
    • Programmable DC Current Limit up to 800 mA
    • 100V, 0.7Ω Hot Swap MOSFET
    • Integrated PD Signature Resistor
    • Integrated PoE Input UVLO
    • Inrush Current Limit
    • PD Classification Capability
    • Thermal Shutdown Protection
    • Line Over Voltage Protection
    • Complementary Open Drain Outputs for Controlling a DC-DC Converter
    • Power Good Indicator

    Applications:

    • IEEE 802.3af Compliant PoE Powered Devices
    • Non-Compliant, Application Specific Devices
    • Higher Power Ethernet Powered Devices

    Contents:

    • A LM5073 Fully Assembled Evaluation Board
    • A LM5073 Datasheet
    • A LM5073 Evaluation Board Appnote

    Part Number(s)
    (NSID)
    DescriptionAvailabilityCurrent Reported StockBudgetary PricingPack
    Size
    LM5073HE-EVAL
    LM5073HE (High Efficiency) 100V Power-Over-Ethernet PD Interface with Active BridgeFull production


     
    DistributorRegionQty
    DIGI-KEYWorldwide0
    MOUSERWorldwide2
    $75.00 each1

    Description:

    The LM5073HE (High Efficiency) evaluation board is designed as a high performance solution for both IEEE802.3af fully compliant and non-compliant High Power over Ethernet (HPoE) applications. The possible intake power of the unit is a minimum of 26.6W for a minimum input voltage of 37VDC. To make a complete evaluation possible, the board also includes integrated Ethernet RX and TX magnetics and a RJ45 interface.

    Contents:




    National Semiconductor follows the provisions of the Product Stewardship Guide for Customers (CSP-9-111C1) and Banned Substances and Materials of Interest Specification (CSP-9-111S2) for regulatory environmental compliance. Details may be found at: www.national.com/en/packaging/greennopb.html. Lead free products are RoHS compliant.

    Lead Free product status is available through the search tool located here

    Part Number(s)
    (NSID)
    Weight
    (milligrams)
    TypePinsMSL RatingPeak ReflowRoHS
    Status
    CAD SymbolsModelsPackage
    Marking
    Format
    LM5073MH/NOPB

    LM5073MH
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM5073
    MH
    LM5073MHX/NOPB

    LM5073MHX
    53.783
    54.004
    TSSOP EXP PAD141
    1
    260
    260
    DetailDownloadN/A
    NSUZXYTT
    LM5073
    MH

    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM5073.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM5073 is located at RoHS Status.

    Reliability Metrics
    Part Number Process EFR Reject EFR Sample Size PPM LTA Rejects LTA Device Hours FITS MTTF (Hours)
    LM5073MHABCD150XV2036010011554964327875145
    LM5073MHXABCD150XV2036010011554964327875145

    Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR. The Long Term Failure Rates were calculated at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress temperature of 150°C to an application temperature of 55°C.

    For more information on Reliability Metrics, please click here.


    All information pertaining to the RoHS Compliance Standard can be found at http://www.national.com/en/packaging/leadfree.html.

    Moisture Sensitivity Level Data for LM5073.

    A RoHS compliance or an IPC 1752 report can be acquired at http://www.national.com/en/packaging/greennopb.html.

    National's certificate of product compliance for LM5073 is located at RoHS Status.

    [Information as of 6-Feb-2012]