TPS23757 高效 PoE 接口和 DC/DC 控制器
TPS23757 描述
The TPS23757 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 for a type 1 PD, which is equivalent to the 13W standard of IEEE 802.3-2008.
The TPS23757 supports a number of input voltage ORing options including highest voltage, external adapter preference, and PoE preference.
The TPS23757 has an output flag indicating if an external wall adapter is active when used in conjunction with ORing controls. The detection signature pin can also be used to force power from the PoE source off. Classification can be programmed to any of the defined types with a single resistor
|
TPS23750 |
TPS23753 |
TPS23753A |
TPS23757 |
TPS23770 |
| PoE Standards Supported |
802.3at type1 |
802.3at type1 |
802.3at type1 |
802.3at type1 |
802.3at type1 |
| PD Power Level |
13W |
13W |
13W |
13W |
13W |
| PoE Inrush Limit(Typ)(mA) |
140 |
140 |
140 |
140 |
140 |
| PoE Current Limit(Min)(mA) |
405 |
405 |
405 |
400 |
405 |
| UVLO |
802.3af |
Unified |
Unified |
Unified |
Unified |
| rDS(on) per FET(Typ)(mOhms) |
600 |
700 |
700 |
430 |
600 |
| Fault Response |
Auto Retry |
Auto Retry |
Auto Retry |
Auto Retry |
Auto Retry |
| Error Amplifier |
Yes |
No |
No |
No |
Yes |
| Auxiliary/Local Power Support |
External Circuit |
Programmable |
Programmable |
Programmable |
External Circuit |
| Auxiliary Power Rails Supported |
24V-57V |
12V-57V |
12V-57V |
12V-57V |
24V-57V |
| Driven/Active Clamp (Second Gate Drive) |
No |
No |
No |
Yes |
No |
| Duty Cycle(%) |
50 |
78 |
78 |
78 |
50 |
| Switching Frequency |
Programmable |
Synchronizable and Programmable |
Synchronizable and Programmable |
Synchronizable and Programmable |
Programmable |
| Operating Temperature Range(°C) |
-40 to 85 |
-40 to 125 |
-40 to 125 |
-40 to 125 |
-40 to 85 |
| Pin/Package |
20HTSSOP |
14TSSOP |
14TSSOP |
20TSSOP |
20HTSSOP |
| Approx. Price (US$) |
1.50 | 1ku |
1.45 | 1ku |
1.45 | 1ku |
1.65 | 1ku |
1.50 | 1ku |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
TPS23757 特性
- Powers up to 13 W (Input) PDs
- Legacy and IEEE 802.3at Type 1 PDs
- Optimized for Isolated DC/DC Converters
- Supports High-Efficiency Topologies
- Complete PoE Interface
- Adapter ORing Support
- Programmable Frequency with Synch.
- Robust 100 V, 0.5 Ohm Hotswap MOSFET
- Pin Compatible with TPS23754/6
- –40°C to 125°C Junction Temperature Range
- Industry Standard TSSOP-20
- APPLICATIONS
- IEEE 802.3at Type 1 Compliant Devices
- Video and VoIP Telephones
- Access Points
- Security Cameras
TPS23757 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 |
| TPS23757PW |
ACTIVE |
-40 to 125 |
2.00 | 1ku |
TSSOP (PW) | 20 |
70 | TUBE |
TPS23757 |
| TPS23757PWR |
ACTIVE |
-40 to 125 |
1.65 | 1ku |
TSSOP (PW) | 20 |
2000 | LARGE T&R |
TPS23757 |
TPS23757 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 |
| TPS23757PW |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS23757PW |
TPS23757PW |
| TPS23757PWR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS23757PWR |
TPS23757PWR |
TPS23757 应用技术支持与电子电路设计开发资源下载
- TPS23757 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)
TPS23757 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS23757 22-57V 输出电压、5V 输出电压高效 PoE 接口和 DC/DC 控制器评估模块 |
TPS23757EVM |
Texas Instruments |
开发电路板/EVM |