TPS23882B Type-3 2-Pair 8-Channel PSE Controller with Autonomous Mode, SRAM, and 200-mΩ RSENSE

1 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 ±4%
200-mΩ current sense resistor
User-selectable 15-W or 30-W autonomous mode with no MCU required
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 operational foldback protection
425-mA and 1.25-A selectable current limits
Port re-mapping
8-bit or 16-bit I²C communication
Flexible processor controlled operating modes
- Auto, semiauto and manual / diagnostic
Per port voltage monitoring and telemetry
–40 °C to +125 °C temperature operation