High efficiency integrated IEEE 802.3at PoE-PD interface and PWM controller type 2 PSE indicator, plus support for forward active clamp topology

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  • The PM8803 integrates a Power over Ethernet (PoE) interface and a current mode PWM controller to simplify the design of the power supply sections of all powered devices. The PoE/PoE+ interface includes all functions required by the IEEE 802.3at as well as detection, classification, undervoltage lockout (UVLO) and inrush current limitation.

    The PM8803 specifically performs IEEE802.3at Layer 1 hardware classification, providing the system with an indication of Type 2 PSE successful detection.
    The PM8803 has been designed to work with power either from the Ethernet cable or from an external power source such as a wall adapter, ensuring the priority of the auxiliary source over the PoE. The DC-DC section of the PM8803 features a programmable oscillator frequency, an adjustable slope compensation, dual complementary low-side drivers, programmable dead time and an internal temperature sensor.
    The PM8803 targets high-efficiency conversion under all load conditions supporting flyback, forward, forward with active clamp converters and synchronous rectification.

    Key Features

    • IEEE 802.3at compliant PD interface
    • Works with power supplied from Ethernet LAN cables or from local auxiliary sources
    • Successful IEEE802.3at Layer1 classification indicator
    • Integrated 100 V, 0.45 Ω, 1 A hot-swap MOSFET
    • Accurate 140 mA typ. inrush current level
    • Programmable classification current
    • Programmable DC current limit up to 1 A
    • Integrated high voltage start-up bias regulator
    • Thermal shutdown protection
    • Current mode pulse width modulator
    • Programmable oscillator frequency
    • 80% maximum duty cycle with internal slope compensation
    • Support for flyback, forward, forward active clamp, flyback with synchronous rectification

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Budgetary Price (US$)*
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ECCN (US)
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PM8803TR HTSSOP20 Tape And Reel
Active
1.2202 1000 EAR99 MALAYSIA Check Availability

Distributor availability ofPM8803TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2279 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 1981 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

2279

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1981

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-11

Get sample
PM8803 HTSSOP20 Tube
Active
1.2202 1000 EAR99 MALAYSIA Check Availability

Distributor availability ofPM8803

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 1432 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

MOUSER

Stock

1432

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-11

Buy now

PM8803TR

Package

HTSSOP20

Packing Type

Tape And Reel

Unit Price (US$)

1.2202*

Distributor availability ofPM8803TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2279 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 1981 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

DIGIKEY

Stock

2279

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

1981

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-11

Marketing Status

Active

Unit Price (US$)

1.2202

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

PM8803

Package

HTSSOP20

Packing Type

Tube

Unit Price (US$)

1.2202*

Distributor availability ofPM8803

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 1432 1 Order Now

Distributor reported inventory date: 2019-11-11

Distributor Name

MOUSER

Stock

1432

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-11-11

Marketing Status

Active

Unit Price (US$)

1.2202

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 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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Evaluation Tools

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      3.3 V/6 A, synchronous flyback converter, Power Over Ethernet (PoE) - IEEE 802.3at compliant reference design

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS7139
      High-efficiency, IEEE 802.3at compliant integrated PoE-PD interface and PWM controller
      3.0
      1.36 MB
      PDF
      DS7139

      High-efficiency, IEEE 802.3at compliant integrated PoE-PD interface and PWM controller

    • Description Version Size Action
      AN4006
      Designing a high-efficiency (60 W on 4 pairs) PoE converter using the PM8803 and an external current booster
      1.0
      3.11 MB
      PDF
      AN3373
      IEEE802.3at compliant PD + PS design based on PM8803 low power, synchronous flyback PoE converter
      1.0
      1.23 MB
      PDF
      AN3387
      PM8803 layout guidelines
      1.0
      944.44 KB
      PDF
      AN4473
      PoE synchronous flyback, IEEE802.3at compliant, 5V - 4A PD converter based on the PM8803 controller
      1.1
      2.61 MB
      PDF
      AN4006

      Designing a high-efficiency (60 W on 4 pairs) PoE converter using the PM8803 and an external current booster

      AN3373

      IEEE802.3at compliant PD + PS design based on PM8803 low power, synchronous flyback PoE converter

      AN3387

      PM8803 layout guidelines

      AN4473

      PoE synchronous flyback, IEEE802.3at compliant, 5V - 4A PD converter based on the PM8803 controller

    • Description Version Size Action
      AN4687
      PoE synchronous flyback, IEEE802.3at compliant, 3.3 V - 6 A PD converter based on the PM8803 controller
      1.0
      2.46 MB
      PDF
      AN4473
      PoE synchronous flyback, IEEE802.3at compliant, 5V - 4A PD converter based on the PM8803 controller
      1.1
      2.61 MB
      PDF
      AN4687

      PoE synchronous flyback, IEEE802.3at compliant, 3.3 V - 6 A PD converter based on the PM8803 controller

      AN4473

      PoE synchronous flyback, IEEE802.3at compliant, 5V - 4A PD converter based on the PM8803 controller

Publications and Collaterals

    • Description Version Size Action
      PM8803: Integrated PoE+ PD interface and PWM controller 3.1
      216.44 KB
      PDF

      PM8803: Integrated PoE+ PD interface and PWM controller

    • Description Version Size Action
      Power Management Guide 06.2019
      4.89 MB
      PDF

      Power Management Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
PM8803
Active
HTSSOP20 Industrial Ecopack2
PM8803TR
Active
HTSSOP20 Industrial Ecopack2

PM8803

Package:

HTSSOP20

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP20

Grade

Industrial

RoHS Compliance Grade

Ecopack2

PM8803TR

Package:

HTSSOP20

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP20

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.