TPS23881ARTQR
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Texas Instruments TPS23881ARTQR

Manufacturer No:
TPS23881ARTQR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC POE CNTRL 8 CHAN IEEE 802.3BT
Delivery:
Payment:
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Product Introduction

Overview

The TPS23881ARTQR from Texas Instruments is an 8-channel power sourcing equipment (PSE) controller designed to comply with the IEEE 802.3bt standard for Power over Ethernet (PoE) applications. This device is engineered to insert power onto Ethernet cables and can detect powered devices (PDs) with valid signatures, complete mutual identification, and apply power accordingly. The TPS23881 improves upon its predecessor, the TPS23880, with enhanced features such as reduced current sense resistors, more accurate programmable power limiting, and capacitance measurement. It is also compatible with TI’s FirmPSE system firmware, enabling a fully configurable solution for controlling multiple devices in systems offering up to 48 ports of 4-pair PoE power.

Key Specifications

Parameter Value
Package VQFN (RTQ) with 56 pins
Operating Temperature Range -40°C to 125°C
Supply Voltage Range 44-57V
Number of Channels 8 independent PSE channels
Current Sense Resistor 200-mΩ
Power Limiting Accuracy ±2.5%
Port Power Allocations Selectable 2-pair or 4-pair port power allocations
Maximum Power per Port 15.4 W, 30 W, 45 W, 60 W, 75 W, or 90 W

Key Features

  • IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 Power over Ethernet applications
  • Eight independent PSE channels configurable in any combination of 2-Pair (1-channel) or 4-Pair (2-channels) PoE Ports
  • Compatible with TI’s FirmPSE system firmware for controlling multiple devices
  • SRAM Programmable memory for in-field firmware upgradability over I²C
  • Programmable power limiting accuracy ±2.5%
  • Legacy PD capacitance measurement
  • Single and dual signature PD compatibility
  • 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
  • Inrush and operational foldback protection
  • Flexible processor controlled operating modes (auto, semi-auto, and manual/diagnostic)
  • Per port voltage monitoring and telemetry
  • Ultra Low Alpha (ULA) packaging (TPS23881A)

Applications

The TPS23881ARTQR is suitable for various Power over Ethernet (PoE) applications, including but not limited to:

  • Network switches and routers
  • IP phones and video conferencing systems
  • Wireless access points and small cells
  • Security cameras and surveillance systems
  • Building automation and control systems

Q & A

  1. What is the TPS23881ARTQR?

    The TPS23881ARTQR is an 8-channel power sourcing equipment (PSE) controller designed for Power over Ethernet (PoE) applications according to the IEEE 802.3bt standard.

  2. What are the key features of the TPS23881ARTQR?

    Key features include eight independent PSE channels, programmable power limiting, legacy PD capacitance measurement, and compatibility with TI’s FirmPSE system firmware.

  3. What is the operating temperature range of the TPS23881ARTQR?

    The operating temperature range is -40°C to 125°C.

  4. What is the maximum power per port for the TPS23881ARTQR?

    The maximum power per port can be 15.4 W, 30 W, 45 W, 60 W, 75 W, or 90 W.

  5. Is the TPS23881ARTQR compatible with other TI firmware?

    Yes, it is compatible with TI’s FirmPSE system firmware.

  6. What type of memory does the TPS23881ARTQR use?

    The device uses SRAM Programmable memory for in-field firmware upgradability over I²C.

  7. What is the current sense resistor value in the TPS23881ARTQR?

    The current sense resistor value is 200-mΩ.

  8. Does the TPS23881ARTQR support single and dual signature PDs?

    Yes, it supports both single and dual signature powered devices (PDs).

  9. What is the current sensing accuracy of the TPS23881ARTQR?

    The current sensing accuracy is 2%.

  10. What are the processor-controlled operating modes of the TPS23881ARTQR?

    The operating modes include auto, semi-auto, and manual/diagnostic.

Product Attributes

Type:Controller (PSE)
Number of Channels:8
Power - Max:127 W
Internal Switch(s):No
Auxiliary Sense:No
Standards:802.3at (PoE+), 802.3bt
Voltage - Supply:3V ~ 3.6V
Current - Supply:6mA
Operating Temperature:-40°C ~ 125°C
Mounting Type:Surface Mount
Package / Case:56-VFQFN Exposed Pad
Supplier Device Package:56-VQFN (8x8)
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Similar Products

Part Number TPS23881ARTQR TPS23881ARTQT TPS23881RTQR
Manufacturer Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active
Type Controller (PSE) Controller (PSE) Controller (PSE)
Number of Channels 8 8 8
Power - Max 127 W 127 W 127 W
Internal Switch(s) No No No
Auxiliary Sense No No No
Standards 802.3at (PoE+), 802.3bt 802.3at (PoE+), 802.3bt 802.3at (PoE+), 802.3bt
Voltage - Supply 3V ~ 3.6V 3V ~ 3.6V 3V ~ 3.6V
Current - Supply 6mA 6mA 6mA
Operating Temperature -40°C ~ 125°C -40°C ~ 125°C -40°C ~ 125°C
Mounting Type Surface Mount Surface Mount Surface Mount
Package / Case 56-VFQFN Exposed Pad 56-VFQFN Exposed Pad 56-VFQFN Exposed Pad
Supplier Device Package 56-VQFN (8x8) 56-VQFN (8x8) 56-VQFN (8x8)

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