PM8805

批量生产
Education

具有嵌入式双有源桥的IEEE 802.3bt PoE-PD接口

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  • The PM8805 is a system-in-package for smart power supply of Power over Ethernet (PoE) Powered Devices (PD) and it is applicable for power level up to 99.9 W.

    It embeds: two active bridges and their driving circuitry, a charge pump to drive the high-side MOSFETs, the hot swap MOSFET and the interface compliant with IEEE 802.3bt.
    The device performs the physical layer classification, providing the indication of successful PSE type identification. A 4-pair PSE is identified and the information is available by a dedicated matrix of Tx signals.
    The device works with power either from the Ethernet cable or from an external power source such as a wall adapter, with possible prevalence of the auxiliary source with respect to the PoE.
    The PM8805 is suitable to build the interface section of PoE switch mode power supplies targeting the highest conversion efficiency. It provides a PGD signal that can be used to enable a PWM controller, a DC-DC converter or an LED driver.

    主要特性

    • Dual active bridge, hot swap MOSFETand PoE-PD interface in a system-in-package
    • 100 V N-ch MOSFETs with 0.2 Ω total path resistance for each active bridge.
    • 100 V, 0.1 Ω high-side N-ch hot swap MOSFET
    • PoE-PD single-signature interface compliant with IEEE 802.3bt / at / af
    • Supports 4-pair PoE applications
    • Supports 12 V auxiliary sources
    • Identifies which kind of PSE (standard or legacy) is connected with and provides successful IEEE802.3bt / at / af classification indication as a combination of the T0, T1 and T2 signals (open drain)
    • Smart operational modes
    • Programmable classification current with 3.3 ms delay.
    • Optional Autoclass feature
    • Advanced energy-saving MPS timings
    • Two-step hot swap current protection: DC with 1 ms delay and short-circuit with 10 us delay.
    • Controlled pre-charge of the output capacitor
    • PGD signal (open drain) to enable an external PWM controller.
    • Thermal shutdown protection

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    • 产品型号

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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
      DS12813
      IEEE 802.3bt PoE-PD interface with embedded dual active bridge
      2.0
      1.68 MB
      PDF
      DS12813

      IEEE 802.3bt PoE-PD interface with embedded dual active bridge

    • 描述 版本 文档大小 操作
      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

    • 描述 版本 文档大小 操作
      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

出版刊物和宣传资料

    • 描述 版本 文档大小 操作
      电源管理指南 06.2019
      5.89 MB
      PDF

      电源管理指南

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
PM8805TR
批量生产
QFN 8x8x1 43L P 0.5 6 Dice pad 工业 Ecopack2

PM8805TR

Package:

QFN 8x8x1 43L P 0.5 6 Dice pad

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

QFN 8x8x1 43L P 0.5 6 Dice pad

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此,它们可能不是100%适用于特定的设备。有关特定设备的信息,请联系 销售支持

样片和购买

产品型号
从分销商订购
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
PM8805TR Available at 5 distributors

...的经销商可用性PM8805TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 1402 1 马上订购
ARROW EUROPE 55 0 马上订购
ARROW AMERICA 2500 2500 马上订购
MOUSER WORLDWIDE 2444 1 马上订购
Farnell Element14 EUROPE 2424 1 马上订购

代理商库存报告日期: 2020-08-02

代理商名称

DIGIKEY

库存

1402

Min.Order

1

地区

WORLDWIDE 马上订购

ARROW

库存

55

Min.Order

0

地区

EUROPE 马上订购

ARROW

库存

2500

Min.Order

2500

地区

AMERICA 马上订购

MOUSER

库存

2444

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

2424

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-08-02

立即购买
批量生产
EAR99 NEC Tape And Reel QFN 8x8x1 43L P 0.5 6 Dice pad - - CHINA 3.6775 / 1k

PM8805TR

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

3.6775 / 1k

...的经销商可用性PM8805TR

代理商名称
地区 库存 最小订购量 第三方链接
DIGIKEY WORLDWIDE 1402 1 马上订购
ARROW EUROPE 55 0 马上订购
ARROW AMERICA 2500 2500 马上订购
MOUSER WORLDWIDE 2444 1 马上订购
Farnell Element14 EUROPE 2424 1 马上订购

代理商库存报告日期: 2020-08-02

代理商名称

DIGIKEY

库存

1402

Min.Order

1

地区

WORLDWIDE 马上订购

ARROW

库存

55

Min.Order

0

地区

EUROPE 马上订购

ARROW

库存

2500

Min.Order

2500

地区

AMERICA 马上订购

MOUSER

库存

2444

Min.Order

1

地区

WORLDWIDE 马上订购

Farnell Element14

库存

2424

Min.Order

1

地区

EUROPE 马上订购

代理商库存报告日期: 2020-08-02

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

QFN 8x8x1 43L P 0.5 6 Dice pad

Operating Temperature (°C)

(最小值)

-

(最大值)

-

Budgetary Price (US$)* / Qty

3.6775 / 1k

Country of Origin

CHINA

(*) 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