TPS23851 High Power Wide Voltage Range Quad Port Ethernet Power Sourcing Equipment Manager
TPS23851 描述
The TPS23851 is a quad-power controller engineered to insert power onto Ethernet cable according to IEEE Std 802.3at-2009 (or 802.3at) for Power Sourcing Equipment (PSE). The PSE controller can detect Powered devices (PDs) that have a valid signature, determine the power requirements of the devices according to the classification, and apply power to the devices, limited per 802.3at. Based on an industry standard register set, the PSE controller is software compatible with other PSE controllers for basic functionality.
Beyond the industry standard operation, the TPS23851 operates with enhanced features. Port current trip point can be set to all classification thresholds of IEEE Std 802.3-2005 (or 802.3af) and can be programmed up to more than 720 mA when used with a LLDP classification stack, complying with 802.
|
TPS23851 |
| No. of Outputs |
4 |
| Adjustable Current Limit(Min)(A) |
0.052 |
| Vin(Min)(V) |
25 |
| Vin(Max)(V) |
34 |
| Pin/Package |
36SSOP |
| Operating Temperature Range(°C) |
-20 to 125 |
TPS23851 特性
- INDUSTRY STANDARD PSE
- Fully IEEE Std 802.3at-2009 Compliant
- Four Independent PSE Ports
- PD Detection and Classification
- Current Limit Output Protection with Foldback for Reduced Cost FET
- AC and DC Disconnect Detection
- I2CTM Communication4 Bit Address for 64-Port Systems
- Flexible Operation ModesAutomaticSemi AutomaticProcessor Controlled
- Pin Compatible with LTC4259A & MAX5952/MAX5945/MAX5935
- ENHANCED FEATURES
- Never Fooled 4-Point Detection
- Onboard Precision 110-Hz AC Disconnect Sine Wave Oscillator
- I2C Watchdog for Failsafe Operation
- Individual and Multiplexed Port Shutdown Modes
- Per Port A/D Converters
- 14-Bit Resolution for Precision Measurements
- Real-time Voltage Monitoring
- Real-time Current Monitoring
- Inherent Filtering
- Extended –20°C to 125°C Temperature Operation
TPS23851 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） | Quantity |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| TPS23851DCE |
PREVIEW |
-20 to 125 |
6.50 | 1ku |
SSOP (DCE) | 36 |
25 |
|
| TPS23851DCER |
PREVIEW |
-20 to 125 |
4.50 | 1ku |
SSOP (DCE) | 36 |
1000 |
|
TPS23851 应用技术支持与电子电路设计开发资源下载
- TPS23851 数据资料 dataSheet 下载.PDF
- TI 德州仪器无限流负载开关产品选型与价格 . xls
- PowerPADTM Thermally Enhanced Package
(PDF 1040 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
- Comparing Performance of Current Ramp and Voltage Ramp Hot Swap Controller ICs
(PDF 356 KB)
- PowerPADTM Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
TPS23851 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS23851 评估模块 |
TPS23851EVM |
Texas Instruments |
开发电路板/EVM |