STEVAL-POE001V1

批量生产
Design Win

以太网供电(PoE)- 符合IEEE 802.3bt标准的接口参考设计

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产品概述

描述

This reference design integrates a high power standard PoE-PD interface compliant with the third generation IEEE 802.3bt PoE standard, able to support applications up to 100 W.

The PoE-PD interface is based on the PM8805 system in package featuring two embedded active bridges with driving circuitry, a charge pump to drive the high side MOSFETs, a hot swap MOSFET and a standard single-signature interface compliant with IEEE 802.3bt, including detection, classification, UVLO and inrush current limitation.

The device implements IEEE 802.3bt physical layer classification schemes to signal successful PSE type identification to the system: it identifies a 4-pair PSE by monitoring the Ethernet cable pairs and providing the system with a dedicated matrix of Tx signals.

The PM8805 is suitable for building the interface for PoE switch mode power supplies for maximum conversion efficiency, with a PGD signal that can be used to enable downstream DC-DC converters or LED drivers with suitable electrical parameters.

  • 所有功能

    • System in package including a dual active bridge, a hot swap MOSFET and a PoE-PD interface
    • Robust 100V N-ch MOSFETs with 0.2 Ω total path resistance for each active bridge
    • Robust 100 V, 0.1 Ω high side N-ch hot swap MOSFET
    • PoE-PD single-signature interface compliant with IEEE 802.3bt
    • Detection and support of high power, 4-pair applications
    • Identifies which kind of PSE (standard or legacy) it is connected with, and provides successful IEEE 802.3af/at/bt classification indication through combination of the T0, T1 and T2 signals (open drain)
    • Programmable classification current with 3.3 ms delay
    • Advanced energy-saving MPS timings
    • Two step hot swap current protection: DC with 1 ms delay and overload with 10 µs delay
    • Startup phase (pre-charge of the output capacitor), performed using an internally limited current source
    • PGD signal (open drain) to enable an external PWM controller
    • Thermal shutdown protection
    • RoHS compliant
    • WEEE compliant

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质量与可靠性

产品型号 Marketing Status 等级规格 符合RoHS级别 WEEE Compliant 材料声明**
STEVAL-POE001V1
批量生产
CARD 工业 Ecopack2 Yes

STEVAL-POE001V1

Package:

CARD

Material Declaration**:

Marketing Status

批量生产

Package

CARD

Grade

Industrial

RoHS Compliance Grade

Ecopack2

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样片和购买

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STEVAL-POE001V1
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STEVAL-POE001V1 批量生产

Budgetary Price (US$)*/Qty:
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产品型号:

STEVAL-POE001V1

供应商:

ST

核心产品:

PM8805

Board production status:

-

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(*) 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