Overview
The TPS23880RTQR, produced by 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 controller is engineered to insert power onto Ethernet cables, supporting both Type 3 and Type 4 PoE configurations. It features eight independent PSE channels that can be configured in any combination of 2-pair or 4-pair PoE ports, making it versatile for various high-power PoE applications.
Key Specifications
| Specification | Details |
|---|---|
| IEEE Standard | IEEE 802.3bt PSE solution for PoE 2 Type 3 or Type 4 |
| Number of PSE Channels | Eight independent channels |
| Port Configuration | Selectable 2-pair or 4-pair port power allocations |
| Power Levels | 15.4 W, 30 W, 45 W, 60 W, 75 W, or 90 W |
| PD Compatibility | Single and dual signature PD compatibility |
| Current Sensing Accuracy | 2% current sensing accuracy |
| Current Limits | 425-mA and 1.25-A selectable current limits |
| Temperature Operation | –40°C to +125°C |
| I2C Communication | 8-bit or 16-bit I2C communication |
| Operating Modes | Auto, semi-auto, and manual/diagnostic modes |
| Port Voltage Monitoring | Per port voltage monitoring and telemetry |
Key Features
- Programmable SRAM for in-field firmware upgradability over I2C
- Programmable power limiting accuracy ±3%
- Dedicated 14-bit integrating current ADC per port
- Inherent filtering and noise immune MPS for DC disconnect
- 100-ms rolling port current averaging
- 1- or 3-bit fast port shutdown input with up to eight levels of per port shutdown priority
- Auto-class discovery and power measurement
- 'Never Fooled' 4-point detection for reliable PD detection
- Inrush and operational foldback protection
- Port re-mapping and pin-to-pin compatibility with TPS2388, TPS23881, and TPS23882 devices
Applications
- Video recorders (NVR, DVR, etc.)
- Small business switches
- Campus and branch switches
Q & A
- What is the TPS23880RTQR used for?
The TPS23880RTQR is used as an 8-channel power sourcing equipment (PSE) controller to insert power onto Ethernet cables in accordance with the IEEE 802.3bt standard.
- How many PSE channels does the TPS23880RTQR have?
The TPS23880RTQR has eight independent PSE channels.
- What are the supported power levels for the TPS23880RTQR?
The supported power levels are 15.4 W, 30 W, 45 W, 60 W, 75 W, or 90 W.
- Does the TPS23880RTQR support single and dual signature PDs?
- What is the current sensing accuracy of the TPS23880RTQR?
The current sensing accuracy is 2%.
- What are the selectable current limits for the TPS23880RTQR?
The selectable current limits are 425-mA and 1.25-A.
- What is the temperature operation range of the TPS23880RTQR?
The temperature operation range is –40°C to +125°C.
- Does the TPS23880RTQR support I2C communication?
- What are the operating modes of the TPS23880RTQR?
The operating modes include auto, semi-auto, and manual/diagnostic modes.
- Can the TPS23880RTQR perform per port voltage monitoring and telemetry?
