TPS23861
- IEEE 802.3at Quad Port PSE controller
- Auto Detect, classification
- Auto Turn-On and disconnect
- Efficient 255-mΩ sense resistor
- Pin-Out enables Two-Layer PCB
- Kelvin Current Sensing
- 4-Point detection
- Automatic mode – as shipped
- No External terminal setting required
- No Initial I2C communication required
- Semi-Automatic mode – set by I2C command
- Continuous Identification and Classification
- Meets IEEE 400-ms TPON specification
- Fast-Port shutdown input
- Operates best when used in conjunction with system reference code http://www.ti.com/product/TPS23861/toolssoftware
- Optional I2C control and monitoring
- –40°C to 125°C Temperature range
- TSSOP 28 Package 9.8 mm x 6.6 mm
The TPS23861 is an easy-to-use, flexible, IEEE802.3at PSE solution. As shipped, it automatically manages four 802.3at ports without the need for any external control.
The TPS23861 automatically detects Powered Devices (PDs) that have a valid signature, determines power requirements according to classification and applies power. Two-event classification is supported for type-2 PDs. The TPS23861 supports DC disconnection and the external FET architecture allows designers to balance size, efficiency and solution cost requirements.
The unique pin-out enables 2-layer PCB designs via logical grouping and clear upper and lower differentiation of I2C and power pins. This delivers best-in-class thermal performance, Kelvin accuracy and low-build cost.
In addition to automatic operation, the TPS23861 supports Semi-Auto Mode via I2C control for precision monitoring and intelligent power management. Compliance with the 400-ms TPON specification is ensured whether in semi-automatic or automatic mode.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | TPS23861 IEEE 802.3at Quad Port Power-over-Ethernet PSE Controller datasheet (Rev. I) | PDF | HTML | 2019年 7月 23日 |
| Application brief | Using the TPS23861 and TPS23882B in Autonomous Mode Features and Benefits | PDF | HTML | 2021年 7月 30日 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| Application note | Lightning Surge Considerations for PoE Power Sourcing Equipment Devices | 2017年 2月 20日 | ||
| Technical article | Make your PSE system smarter and more efficient | PDF | HTML | 2017年 2月 16日 | |
| Application note | TPS23861 VDD Power Solutions | 2016年 8月 24日 | ||
| Application note | TPS23861 Power-On Considerations | 2015年 7月 21日 | ||
| Application note | SIFOs 802.3at Conformance Report, v 4.0.77, TPS23861 | 2014年 6月 11日 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| TSSOP (PW) | 28 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
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