PWM peak current mode controller for PoE and telecom systems

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  • The PM8804 is a PWM controller that integrates all the circuitry required to design a smart and efficient 48 V converter for PoE and telecom mid-power applications.

    It features 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.
    An internal high-voltage linear regulator with a typical 20 mA output current allows the device to start up with a minimum of external components.
    Complementary 1 A peak gate drivers make possible to implement high power topologies, while when the second drives is not used, like with simple low power flyback converters, it can be turned off.
    The device embeds a set of protections that enables the design of a self-protected converter with the scope to eliminate the risk of catastrophic failure at system level.
    The device targets high efficiency conversion at wide range of load.

    Key Features

    • PWM peak current mode controller
    • Input operating voltage up to 75 V
    • Internal high-voltage start up regulator with 20 mA current capability
    • Current sense with programmable blanking time up to 200 ns
    • Programmable fixed frequency up to 1 MHz
    • Soft-start up with settable time
    • Soft turn off (optionally disabled)
    • Dual low-side complementary gate drivers
    • Programmable dead time from 10 to 200 ns between GATE1 and GATE2
    • Gate drivers have 1 A peak capability
    • GATE2 optionally turned off for reduced consumption
    • 80% maximum duty cycle with internal slope compensation
    • Internal pull-up resistor on CTL pin enables the optocoupler connection
    • Operating current consumption < 1.5 mA
    • Embedded protections:
      • Severe overcurrent protection with latch after 4 events
      • Delayed overload protection with automatic restart
      • Feedback disconnection (OV) protection on VC
      • Thermal shutdown
    • High efficiency topologies:
      • Flyback, forward
      • Flyback with synchronous rectification
      • Flyback with active clamp
      • Forward with active clamp

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
PM8804TR VFQFPN 16 3x3x1.0 Tape And Reel
Active
0.6017 1000 EAR99 PHILIPPINES Check Availability

Distributor availability ofPM8804TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4298 1 Order Now
AVNET AMERICA 4000 0 Order Now
FUTURE WORLDWIDE 4000 4000 Order Now
MOUSER WORLDWIDE 4497 1 Order Now
Farnell Element14 EUROPE 95 1 Order Now
RUTRONIK EUROPE 50 1000 Order Now

Distributor reported inventory date: 2019-06-16

Distributor Name

DIGIKEY

Stock

4298

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

4000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

4000

Min.Order

4000

Region

WORLDWIDE Order Now

MOUSER

Stock

4497

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

95

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

50

Min.Order

1000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-06-16

Get sample

PM8804TR

Package

VFQFPN 16 3x3x1.0

Packing Type

Tape And Reel

Unit Price (US$)

0.6017*

Distributor availability ofPM8804TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 4298 1 Order Now
AVNET AMERICA 4000 0 Order Now
FUTURE WORLDWIDE 4000 4000 Order Now
MOUSER WORLDWIDE 4497 1 Order Now
Farnell Element14 EUROPE 95 1 Order Now
RUTRONIK EUROPE 50 1000 Order Now

Distributor reported inventory date: 2019-06-16

Distributor Name

DIGIKEY

Stock

4298

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

4000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

4000

Min.Order

4000

Region

WORLDWIDE Order Now

MOUSER

Stock

4497

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

95

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

50

Min.Order

1000

Region

EUROPE Order Now

Distributor reported inventory date: 2019-06-16

Marketing Status

Active

Unit Price (US$)

0.6017

Quantity

1000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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

    • Part Number

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

      5V/20A, active clamp forward converter, Power Over Ethernet (PoE) - IEEE 802.3bt compliant reference design

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

      3.3V/20A, active clamp forward converter, Power Over Ethernet (PoE) IEEE 802.3bt compliant reference design

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS12490
      PWM peak current mode controller for PoE and telecom systems
      1.0
      813.5 KB
      PDF
      DS12490

      PWM peak current mode controller for PoE and telecom systems

    • Description Version Size Action
      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
      AN3373

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

      AN3387

      PM8803 layout guidelines

    • 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
      AN5190
      5 V/20 A, active clamp forward converter, Power Over Ethernet (PoE) - IEEE 802.3bt compliant reference design
      2.0
      3.24 MB
      PDF
      AN5237
      High power Poe PD, 3V3 up to 20 A active clamp forward evaluation board
      1.0
      3.23 MB
      PDF
      AN5174
      Power over Ethernet - PD converter with 5 V 8 A output, synchronous Flyback, IEEE802.3bt standard compliant
      1.0
      1.34 MB
      PDF
      AN5207

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

      AN5190

      5 V/20 A, active clamp forward converter, Power Over Ethernet (PoE) - IEEE 802.3bt compliant reference design

      AN5237

      High power Poe PD, 3V3 up to 20 A active clamp forward evaluation board

      AN5174

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

Publications and Collaterals

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

      Power Management Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
PM8804TR
Active
VFQFPN 16 3x3x1.0 Industrial Ecopack2

PM8804TR

Package:

VFQFPN 16 3x3x1.0

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 16 3x3x1.0

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.