5V/8A, synchronous flyback converter, Power over Ethernet (PoE) IEEE 802.3bt compliant reference design

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  • The STEVAL-POE002V1 reference design is a two-stage converter for a powered device (PD), and is able to deliver up to 40 W (5 V/8 A) DC from appropriate 4-pair PoE power sourcing equipment (PSE), or an external auxiliary supply.

    The first stage is the Ethernet interface is based on the PM8805 controller with integrated full active bridge rectification. The PoE controller is compliant with the third generation IEEE 802.3bt specification (as well as the preceding 802.3af/at standards), with improved features and increased power capacity that allow new application possibilities for PoE networks, including point of sales and retail logistics devices.
    The second stage is the DC-DC converter designed around a fixed frequency flyback topology managed by the configurable PM8804 PWM controller, with secondary synchronous rectification via a gate driver transformer.

    Key Features

    • PM8805 4-pair IEEE 802.3bt compliant PD interface
    • Works with power supplied from Ethernet LAN cables or local auxiliary sources
    • Line input voltage range: 40 to 60 VDC
    • Output stage managed by configurable PM8804 controller
    • Output voltage: 5 VDC ±2.5%
    • Output current: 8 A
    • Peak-to-peak output ripple: <50 mV
    • DC-DC full load efficiency: >91%
    • Overall full load efficiency: >90%
    • Transient response ΔV pk-pk 100% to 50% load step ≈ 700 mV
    • Switching frequency ≈ 280 KHz

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Core Product
Marketing Status
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ECCN (US)
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STEVAL-POE002V1 PM8804, PM8805
Active
100.0 1 EAR99 ITALY - Check Availability

Distributor availability ofSTEVAL-POE002V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 10 1 Order Now
AVNET AMERICA 5 0 Order Now
MOUSER WORLDWIDE 6 1 Order Now
Farnell Element14 EUROPE 4 1 Order Now
ANGLIA Live EUROPE 1 1 Order Now

Distributor reported inventory date: 2019-09-17

Distributor Name

DIGIKEY

Stock

10

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

5

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

6

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-17

Buy now

STEVAL-POE002V1

Core Product

PM8804, PM8805

Marketing Status

Active

Unit Price (US$)

100.0*

Distributor availability ofSTEVAL-POE002V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 10 1 Order Now
AVNET AMERICA 5 0 Order Now
MOUSER WORLDWIDE 6 1 Order Now
Farnell Element14 EUROPE 4 1 Order Now
ANGLIA Live EUROPE 1 1 Order Now

Distributor reported inventory date: 2019-09-17

Distributor Name

DIGIKEY

Stock

10

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

5

Min.Order

0

Region

AMERICA Order Now

MOUSER

Stock

6

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-17

Unit Price (US$)

100

Quantity

1

ECCN (US)

EAR99

Country of Origin

ITALY

Board production status

-

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Technical Documentation

    • Description Version Size Action
      DB3628
      5V/8A, synchronous flyback converter, Power over Ethernet (PoE) IEEE 802.3bt compliant reference design
      2.0
      3.65 MB
      PDF
      DB3628

      5V/8A, synchronous flyback converter, Power over Ethernet (PoE) IEEE 802.3bt compliant reference design

    • Description Version Size Action
      AN5174
      Power over Ethernet - PD converter with 5 V 8 A output, synchronous Flyback, IEEE802.3bt standard compliant
      1.0
      1.34 MB
      PDF
      AN5174

      Power over Ethernet - PD converter with 5 V 8 A output, synchronous Flyback, IEEE802.3bt standard compliant

Hardware Resources

    • Description Version Size Action
      STEVAL-POE002V1 GERBER 1.0
      272.02 KB
      ZIP

      STEVAL-POE002V1 GERBER

    • Description Version Size Action
      STEVAL-POE002V1 BOM 1.0
      176.21 KB
      PDF

      STEVAL-POE002V1 BOM

    • Description Version Size Action
      STEVAL-POE002V1 SCHEMATIC 1.0
      227.02 KB
      PDF

      STEVAL-POE002V1 SCHEMATIC

Publications and Collaterals

    • Description Version Size Action
      eDesignSuite-The smart way to design your application 1.0
      842.88 KB
      PDF

      eDesignSuite-The smart way to design your application

Legal

    • Description Version Size Action
      Evaluation products license agreement 1.6
      74.12 KB
      PDF

      Evaluation products license agreement

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-POE002V1
Active
CARD Industrial Ecopack2 Yes

STEVAL-POE002V1

Package:

CARD

Material Declaration**:

Marketing Status

Active

Package

CARD

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.