TPS23881 Series
4-pair, type-4, 8-channel PoE PSE with 200-mΩ RSENSE
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
4-pair, type-4, 8-channel PoE PSE with 200-mΩ RSENSE
| Part | Primary Attributes | Supplied Contents | Type | Function | Utilized IC / Part | Package / Case | Auxiliary Sense | Power - Max [Max] | Standards | Operating Temperature [Max] | Operating Temperature [Min] | Internal Switch(s) | Voltage - Supply [Max] | Voltage - Supply [Min] | Supplier Device Package | Supplier Device Package [y] | Supplier Device Package [x] | Current - Supply | Number of Channels | Mounting Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments TPS23881EVM-083 | 8-Channel (Octal) | Board(s) | Power Management | Power Over Ethernet (POE), PSE | TPS23881 | |||||||||||||||
Texas Instruments TPS23881ARTQR | Controller (PSE) | 56-VFQFN Exposed Pad | 127 W | 802.3at (PoE+), 802.3bt | 125 °C | -40 °C | 3.6 V | 3 V | 56-VQFN | 8 | 8 | 6 mA | 8 | Surface Mount | ||||||
Texas Instruments TPS23881RTQR | Controller (PSE) | 56-VFQFN Exposed Pad | 127 W | 802.3at (PoE+), 802.3bt | 125 °C | -40 °C | 3.6 V | 3 V | 56-VQFN | 8 | 8 | 6 mA | 8 | Surface Mount | ||||||
Texas Instruments TPS23881RTQT | Controller (PSE) | 56-VFQFN Exposed Pad | 127 W | 802.3at (PoE+), 802.3bt | 125 °C | -40 °C | 3.6 V | 3 V | 56-VQFN | 8 | 8 | 6 mA | 8 | Surface Mount | ||||||
Texas Instruments TPS23881ARTQT | Controller (PSE) | 56-VFQFN Exposed Pad | 127 W | 802.3at (PoE+), 802.3bt | 125 °C | -40 °C | 3.6 V | 3 V | 56-VQFN | 8 | 8 | 6 mA | 8 | Surface Mount | ||||||
Texas Instruments TPS23881EVM-008 | 8-Channel (Octal) | Board(s) | Power Management | Power Over Ethernet (POE), PSE | TPS23881 |
Key Features
• IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 Power over Ethernet applicationsEight independent PSE channelsCompatible with TI’sFirmPSEsystem firmwareSRAM Programmable memoryProgrammable power limiting accuracy ±2.5%200-mΩ current sense resistorLegacy PD capacitance measurementSelectable 2-pair or 4-pair port power allocations15.4 W, 30 W, 45 W, 60 W, 75 W or 90 WSingle and dual signature PD compatibilityDedicated 14-bit integrating current ADC per portNoise immune MPS for DC disconnect2% current sensing accuracy1- or 3-bit fast port shutdown inputAuto-class discovery and power measurementInrush and operational foldback protectionFlexible processor controlled operating modesAuto, semi auto and manual / diagnosticPer port voltage monitoring and telemetry–40°C to +125°C temperature operationUltra Low Alpha (ULA) packaging (TPS23881A)IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 Power over Ethernet applicationsEight independent PSE channelsCompatible with TI’sFirmPSEsystem firmwareSRAM Programmable memoryProgrammable power limiting accuracy ±2.5%200-mΩ current sense resistorLegacy PD capacitance measurementSelectable 2-pair or 4-pair port power allocations15.4 W, 30 W, 45 W, 60 W, 75 W or 90 WSingle and dual signature PD compatibilityDedicated 14-bit integrating current ADC per portNoise immune MPS for DC disconnect2% current sensing accuracy1- or 3-bit fast port shutdown inputAuto-class discovery and power measurementInrush and operational foldback protectionFlexible processor controlled operating modesAuto, semi auto and manual / diagnosticPer port voltage monitoring and telemetry–40°C to +125°C temperature operationUltra Low Alpha (ULA) packaging (TPS23881A)
Description
AI
The TPS23881 is an 8-channel power sourcing equipment (PSE) controller engineered to insert power onto Ethernet cables in accordance with the IEEE 802.3bt standard. The eight individual power channels can be configured in any combination of 2-Pair (1-channel) or 4-Pair (2-channels) PoE Ports. The PSE controller can detect powered devices (PDs) that have a valid signature, complete mutual identification, and apply power.
The TPS23881 improves on the TPS23880 with reduced current sense resistors, more accurate programmable power limiting, capacitance measurement and the ability to operate from ROM (see Device Comparison Table). The TPS23881 is also compatible with TI’sFirmPSEsystem firmware, which provides a fully configurable solution for controlling multiple TPS23881 devices in systems offering up to 48-ports of 4-pair PoE power.
Programmable SRAM enables in-field firmware upgradability over I 2C to ensure IEEE compliance and interoperability with the latest PoE enabled devices. Dedicated per port ADCs provide continuous port current monitoring and the ability to perform parallel classification measurements for faster port turn on times. A ±2.5% accurate programmable port power limit provides the ability to expand the maximum power sourced from 90 W to upwards of 125 W. The 200-mΩ current sense resistor and external FET architecture allow designs to balance size, efficiency, thermal and solution cost requirements.
The TPS23881 is an 8-channel power sourcing equipment (PSE) controller engineered to insert power onto Ethernet cables in accordance with the IEEE 802.3bt standard. The eight individual power channels can be configured in any combination of 2-Pair (1-channel) or 4-Pair (2-channels) PoE Ports. The PSE controller can detect powered devices (PDs) that have a valid signature, complete mutual identification, and apply power.
The TPS23881 improves on the TPS23880 with reduced current sense resistors, more accurate programmable power limiting, capacitance measurement and the ability to operate from ROM (see Device Comparison Table). The TPS23881 is also compatible with TI’sFirmPSEsystem firmware, which provides a fully configurable solution for controlling multiple TPS23881 devices in systems offering up to 48-ports of 4-pair PoE power.
Programmable SRAM enables in-field firmware upgradability over I 2C to ensure IEEE compliance and interoperability with the latest PoE enabled devices. Dedicated per port ADCs provide continuous port current monitoring and the ability to perform parallel classification measurements for faster port turn on times. A ±2.5% accurate programmable port power limit provides the ability to expand the maximum power sourced from 90 W to upwards of 125 W. The 200-mΩ current sense resistor and external FET architecture allow designs to balance size, efficiency, thermal and solution cost requirements.