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 |
| 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 |
| TPS23754PWP-1 | ACTIVE | -40 to 125 | 2.00 | 1ku | TSSOP (PW) | 20 | 70 | TUBE | TPS23754-1 |
| TPS23754PWPR-1 | ACTIVE | -40 to 125 | 1.65 | 1ku | TSSOP (PW) | 20 | 2000 | LARGE T&R | TPS23754-1 |
| 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 |
| TPS23754PWP-1 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPS23754PWP-1 | TPS23754PWP-1 |
| TPS23754PWPR-1 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPS23754PWPR-1 | TPS23754PWPR-1 |