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  • This reference design integrates a high power standard PoE-PD interface compliant with the third generation IEEE 802.3bt PoE standard, able to support applications up to 100 W.

    The PoE-PD interface is based on the PM8805 system in package featuring two embedded active bridges with driving circuitry, a charge pump to drive the high side MOSFETs, a hot swap MOSFET and a standard single-signature interface compliant with IEEE 802.3bt, including detection, classification, UVLO and inrush current limitation.
    The device implements IEEE 802.3bt physical layer classification schemes to signal successful PSE type identification to the system: it identifies a 4-pair PSE by monitoring the Ethernet cable pairs and providing the system with a dedicated matrix of Tx signals.
    The PM8805 is suitable for building the interface for PoE switch mode power supplies for maximum conversion efficiency, with a PGD signal that can be used to enable downstream DC-DC converters or LED drivers with suitable electrical parameters.

    Key Features

    • System in package including a dual active bridge, a hot swap MOSFET and a PoE-PD interface
    • Robust 100V N-ch MOSFETs with 0.2 Ω total path resistance for each active bridge
    • Robust 100 V, 0.1 Ω high side N-ch hot swap MOSFET
    • PoE-PD single-signature interface compliant with IEEE 802.3bt
    • Detection and support of high power, 4-pair applications
    • Identifies which kind of PSE (standard or legacy) it is connected with, and provides successful IEEE 802.3af/at/bt classification indication through combination of the T0, T1 and T2 signals (open drain)
    • Programmable classification current with 3.3 ms delay
    • Advanced energy-saving MPS timings
    • Two step hot swap current protection: DC with 1 ms delay and overload with 10 µs delay
    • Startup phase (pre-charge of the output capacitor), performed using an internally limited current source
    • PGD signal (open drain) to enable an external PWM controller
    • Thermal shutdown protection
    • RoHS compliant
    • WEEE compliant

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      3.3 V/3 A high efficiency step down DC-DC converter (VIN= 4.5 to 60 V) based on the L7987
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      Description:

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade WEEE Compliant Material Declaration**
STEVAL-POE001V1
Active
CARD Industrial Ecopack2 Yes

STEVAL-POE001V1

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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Core Product
Marketing Status
Supplier
ECCN (US)
ECCN (EU)
Country of Origin
Board production status
Budgetary Price (US$)*/Qty
STEVAL-POE001V1 Available at 1 distributors

Distributor availability ofSTEVAL-POE001V1

Distributor Name
Region Stock Min. Order Third party link
Newark Element14 AMERICA 2 0 Order Now

Distributor reported inventory date: 2020-12-03

Distributor Name

Newark Element14

Stock

2

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2020-12-03

PM8805
Active
ST EAR99 NEC ITALY - 53.0 / 1

STEVAL-POE001V1

Core Product

PM8805

Marketing Status

Active

Budgetary Price (US$)*/Qty

53.0 / 1

Distributor availability ofSTEVAL-POE001V1

Distributor Name
Region Stock Min. Order Third party link
Newark Element14 AMERICA 2 0 Order Now

Distributor reported inventory date: 2020-12-03

Distributor Name

Newark Element14

Stock

2

Min.Order

0

Region

AMERICA Order Now

Distributor reported inventory date: 2020-12-03

Supplier

ST

ECCN (US)

EAR99

ECCN (EU)

NEC

Budgetary Price (US$)* / Qty

53.0 / 1

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