TPS23882 - Texas Instruments

TPS23882 Type-3 2-Pair 8-Channel PoE 2 PSE Controller

The TPS23882 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 PSE controller can detect powered devices (PDs) that have a valid signature, complete mutual identification, and apply power. The TPS23882 improves on the TPS2388 with reduced current sense.

Features

• IEEE 802.3bt PSE solution for PoE 2 Type-3 2-Pair Power Over Ethernet applications
• Compatible with TI's FirmPSE system firmware
• SRAM Programmable memory
• Programmable power limiting accuracy ±3%
• 200-mΩ Current sense resistor
• Legacy PD capacitance measurement
• Selectable 2-pair port power allocations
  – 4 W, 7 W, 15.4 W, or 30 W
• Dedicated 14-bit integrating current ADC per port
  – Noise immune MPS for DC disconnect
  – 2% Current sensing accuracy
• 1- or 3-Bit fast port shutdown input
• Auto-class discovery and power measurement
• Never Fooled 4-Point detection
• Inrush and operationa.