12V/8A, active clamp forward converter, Power Over Ethernet (PoE) IEEE 802.3bt compliant reference design

Download databrief

Order from our eStore and our distributors

Buy now
Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • This reference design represents a 12 V, 8 A converter solution ideal for various applications including building safety and security or surveillance, with a PoE-PD interface and a DC-DC active clamp forward converter.

    The PoE-PD interface is based on the PM8805 system in package device with two active bridges and an IEEE 802.3bt compliant Powered Device (PD) interface. It can be used in all medium-to-high power 2P and 4P high efficiency PoE and PoE+ applications.
    The DC-DC active clamp forward converter is designed around the PM8804 PWM controller, which is an integrated solution for smart and efficient 48 V converters, featuring a programmable oscillator for the switching frequency, adjustable slope compensation, dual complementary low-side drivers with programmable dead time, programmable soft start, soft turn off and a programmable current sense blanking time.

    Key Features

    • Features of the PM8805 PoE-PD interface:
      • System in package integrating a double active bridge, a hot-swap MOSFET and a PoE-PD
      • Supports legacy high power, 4-pair applications
      • 100 V N-ch MOSFETs with 0.2 Ω total path resistance for each active bridge
      • Identifies which kind of PSE (standard or legacy) is connected to, and provides successful IEEE802.3 af /at /bt classification indication as combination of the T0, T1 and T2 signals (open drain)
      • Smart operational mode selection through the STBY, FAUX and RAUX control signals
      • QFN 56 8x8mm package with 43 pins and 6 exposed pads
    • Features of the PM8804 PWM controller:
      • PWM peak current mode controller
      • Input operating voltage up to 75 V
      • Internal high voltage start up regulator with 20 mA capability
      • Programmable fixed frequency up to 1 Mhz
      • Soft start up with adjustable time
      • Soft turn off (optionally disabled)
      • Dual 1 APK, low side complementary gate drivers
      • GATE2 optionally turned off for reduced consumption
      • 80% maximum duty cycle with internal slope compensation
      • QFN 16 3x3mm package with exposed pad

Sample & Buy

Part Number
Core Product
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Board production status
Order from Distributors
Order from ST
STEVAL-POE005V1 PM8804, PM8805
Active
- EAR99 ITALY - Check Availability

Distributor availability ofSTEVAL-POE005V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9 1 Order Now
ARROW EUROPE 2 0 Order Now
MOUSER WORLDWIDE 3 1 Order Now
Farnell Element14 EUROPE 2 1 Order Now
ANGLIA Live EUROPE 1 1 Order Now

Distributor reported inventory date: 2019-11-12

Distributor Name

DIGIKEY

Stock

9

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-12

Buy now

STEVAL-POE005V1

Core Product

PM8804, PM8805

Marketing Status

Active

Unit Price (US$)

*

Distributor availability ofSTEVAL-POE005V1

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 9 1 Order Now
ARROW EUROPE 2 0 Order Now
MOUSER WORLDWIDE 3 1 Order Now
Farnell Element14 EUROPE 2 1 Order Now
ANGLIA Live EUROPE 1 1 Order Now

Distributor reported inventory date: 2019-11-12

Distributor Name

DIGIKEY

Stock

9

Min.Order

1

Region

WORLDWIDE Order Now

ARROW

Stock

2

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

3

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2

Min.Order

1

Region

EUROPE Order Now

ANGLIA Live

Stock

1

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-12

Unit Price (US$)

-

Quantity

-

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

Recommended for you

Related Applications

Factory Automation

Home, Building and City Automation

Power Supplies and Converters

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DB3699
      12V/8A, active clamp forward converter, Power Over Ethernet (PoE) IEEE 802.3bt compliant reference design
      3.0
      3.9 MB
      PDF
      DB3699

      12V/8A, active clamp forward converter, Power Over Ethernet (PoE) IEEE 802.3bt compliant reference design

    • Description Version Size Action
      AN5207
      12 V/8 A, active clamp forward converter, Power Over Ethernet (PoE) IEEE 802.3bt compliant reference design
      2.0
      2.85 MB
      PDF
      AN5207

      12 V/8 A, active clamp forward converter, Power Over Ethernet (PoE) IEEE 802.3bt compliant reference design

Hardware Resources

    • Description Version Size Action
      STEVAL-POE005V1 GERBER 1.0
      333.44 KB
      ZIP

      STEVAL-POE005V1 GERBER

    • Description Version Size Action
      STEVAL-POE005V1 BOM 1.0
      326.22 KB
      PDF

      STEVAL-POE005V1 BOM

    • Description Version Size Action
      STEVAL-POE005V1 SCHEMATIC 1.0
      517.15 KB
      PDF

      STEVAL-POE005V1 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-POE005V1
Active
CARD Industrial Ecopack2 Yes

STEVAL-POE005V1

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.