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.

    主要特性

    • 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

样片和购买

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PM8803TR HTSSOP20 Tape And Reel
批量生产
1.2202 1000 EAR99 MALAYSIA 查看供货情况

Distributor availability ofPM8803TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2279 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 1981 1 Order Now

代理商库存报告日期: 2019-10-16

代理商名称

DIGIKEY

库存

2279

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

2500

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

1981

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-10-16

获取样片
PM8803 HTSSOP20 Tube
批量生产
1.2202 1000 EAR99 MALAYSIA 查看供货情况

Distributor availability ofPM8803

代理商名称
地区 库存 最小订购量 Third party link
MOUSER WORLDWIDE 1437 1 Order Now

代理商库存报告日期: 2019-10-16

代理商名称

MOUSER

库存

1437

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-10-16

立即购买

PM8803TR

封装

HTSSOP20

包装类型

Tape And Reel

单价(US$)

1.2202*

Distributor availability ofPM8803TR

代理商名称
地区 库存 最小订购量 Third party link
DIGIKEY WORLDWIDE 2279 1 Order Now
ARROW EUROPE 2500 0 Order Now
MOUSER WORLDWIDE 1981 1 Order Now

代理商库存报告日期: 2019-10-16

代理商名称

DIGIKEY

库存

2279

Min.Order

1

地区

WORLDWIDE Order Now

ARROW

库存

2500

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

1981

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-10-16

供货状态

批量生产

单价(US$)

1.2202

数量

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

PM8803

封装

HTSSOP20

包装类型

Tube

单价(US$)

1.2202*

Distributor availability ofPM8803

代理商名称
地区 库存 最小订购量 Third party link
MOUSER WORLDWIDE 1437 1 Order Now

代理商库存报告日期: 2019-10-16

代理商名称

MOUSER

库存

1437

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-10-16

供货状态

批量生产

单价(US$)

1.2202

数量

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商

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      5 V/4 A, synchronous flyback converter, Power Over Ethernet (PoE) - IEEE 802.3at compliant reference design

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00 选择要下载的文档

技术文档

    • 描述 版本 文档大小 操作
      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

    • 描述 版本 文档大小 操作
      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

    • 描述 版本 文档大小 操作
      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

出版刊物和宣传资料

    • 描述 版本 文档大小 操作
      PM8803: Integrated PoE+ PD interface and PWM controller 3.1
      216.44 KB
      PDF

      PM8803: Integrated PoE+ PD interface and PWM controller

    • 描述 版本 文档大小 操作
      Power Management Guide 06.2019
      5.5 MB
      PDF

      Power Management Guide

产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
PM8803
批量生产
HTSSOP20 工业 Ecopack2
PM8803TR
批量生产
HTSSOP20 工业 Ecopack2

PM8803

Package:

HTSSOP20

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

HTSSOP20

Grade

Industrial

RoHS Compliance Grade

Ecopack2

PM8803TR

Package:

HTSSOP20

Material Declaration**:

PDF XML

Marketing Status

批量生产

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.