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.
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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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全部资源
| 资源标题 | 版本 | 更新时间 |
|---|
Board Manufacturing Specifications (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| ZIP | 1.0 | 04 Oct 2018 | 04 Oct 2018 |
物料清单 (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 2.0 | 10 Dec 2018 | 10 Dec 2018 |
Schematic Pack (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| 2.0 | 10 Dec 2018 | 10 Dec 2018 |
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 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:
CARDMaterial Declaration**:
(**) 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 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 封装 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | 供应商 | 核心产品 | Board production status | 供应商 | 核心产品 | Board production status | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-POE001V1 | | | distributors 无法联系到经销商，请联系我们的销售办事处 | ITALY | EAR99 | NEC | ST | PM8805 | - | ST | PM8805 | - |
STEVAL-POE001V1 批量生产