TPS23754 具有高效集成 PWM 控制器的高功率 PoE 接口
TPS23754 描述
The TPS23754/6 is a combined Power over Ethernet (PoE) powered device (PD) interface and current-mode dc/dc controller optimized specifically for isolated converters. The PoE interface supports the IEEE 802.3at standard.
The TPS23754/6 supports a number of input voltage ORing options including highest voltage, external adapter preference, and PoE preference. These features allow the designer to determine which power source will carry the load under all conditions.
The PoE interface features the new extended hardware classification necessary for compatibility with high-power midspan power sourcing equipment (PSE) per IEEE 802.3at. The detection signature pin can also be used to force power from the PoE source off
|
TPS23754 |
TPS23754-1 |
TPS23756 |
| PoE Standards Supported |
802.3at type1,2 |
802.3at type1,2 |
802.3at type1,2 |
| PD Power Level |
25W |
25W |
25W |
| PoE Inrush Limit(Typ)(mA) |
140 |
140 |
140 |
| PoE Current Limit(Min)(mA) |
850 |
850 |
850 |
| UVLO |
Unified |
Unified |
Unified |
| rDS(on) per FET(Typ)(mOhms) |
430 |
430 |
430 |
| Fault Response |
Auto Retry |
Auto Retry |
Auto Retry |
| Error Amplifier |
No |
No |
No |
| Auxiliary/Local Power Support |
Programmable |
Programmable |
Programmable |
| Auxiliary Power Rails Supported |
24V-57V |
24V-57V |
12V-57V |
| Driven/Active Clamp (Second Gate Drive) |
Yes |
Yes |
Yes |
| Duty Cycle(%) |
78 |
78 |
78 |
| Switching Frequency |
Synchronizable and Programmable |
Synchronizable and Programmable |
Synchronizable and Programmableup to 1MHz |
| Operating Temperature Range(°C) |
-40 to 125 |
-40 to 125 |
-40 to 125 |
| Pin/Package |
20HTSSOP |
20HTSSOP |
20HTSSOP |
| Approx. Price (US$) |
1.90 | 1ku |
1.90 | 1ku |
1.90 | 1ku |
| Rating |
Catalog |
Catalog |
Catalog |
TPS23754 特性
- Powers up to 30 W (input) PDs
- DC/DC Control Optimized for Isolated Converters
- Supports High-efficiency Topologies
- Complete PoE Interface
- Enhanced Classification per IEEE 802.3at with Status Flag
- Adapter ORing Support
- Programmable Frequency with Synchronization
- Robust 100 V, 0.5 Ohm Hotswap MOSFET
- –40°C to 125°C Junction Temperature Range
- Industry Standard PowerPAD TSSOP-20
- APPLICATIONS
- IEEE 802.3at Compliant Devices
- Video and VoIP Telephones
- RFID Readers
- Multiband Access Points
- Security Cameras
TPS23754 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 |
| TPS23754PW |
ACTIVE |
-40 to 125 |
2.00 | 1ku |
TSSOP (PW) | 20 |
70 | TUBE |
TPS23754 |
| TPS23754PWR |
ACTIVE |
-40 to 125 |
1.65 | 1ku |
TSSOP (PW) | 20 |
2000 | LARGE T&R |
TPS23754 |
TPS23754 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| TPS23754PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS23754PW |
TPS23754PW |
| TPS23754PWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS23754PWR |
TPS23754PWR |
TPS23754 应用技术支持与电子电路设计开发资源下载
- TPS23754 数据资料 dataSheet 下载.PDF
- TI 德州仪器受电器件产品选型与价格 . 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)
TPS23754 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| 用于 TPS23754 的 20-57V 输入电压、5V 输出电压高功率评估模块 |
TPS23754EVM-420 |
Texas Instruments |
开发电路板/EVM |
| 用于 TPS23754 的 33-57V 输入电压、12V 输出电压高功率评估模块 |
TPS23754EVM-383 |
Texas Instruments |
开发电路板/EVM |
| TPS23754 评估模块 |
TPS23754EVM |
Texas Instruments |
开发电路板/EVM |