TPS2372-4RGWT

Power Over Ethernet (PoE) Controllers Overview

The TPS2372-4RGWT is a high-power Power over Ethernet (PoE) Powered Device (PD) interface controller from Texas Instruments, compliant with IEEE 802.3bt Type 4 standards. It supports up to 90 W of power at the PSE side and delivers approximately 71.3 W to the PD input when using 100 meters of CAT5 cable. The device integrates a robust 100 V hot-swap MOSFET with a typical on-resistance of 0.1 Ω and a current limit of 2.2 A. It operates within a junction temperature range of -40°C to 125°C and is housed in a 20-pin VQFN package.

Power Over Ethernet (PoE) Controllers Feature Summary

• Supports IEEE 802.3bt Type 4 PoE++ applications with automatic classification capabilities for advanced system power optimization.
• Integrates an internal low-resistance hot-swap MOSFET capable of handling high-power loads while providing thermal shutdown protection.
• Features automatic Maintenance Power Signature (MPS) functionality to enable ultra-low power standby modes through programmable pulse currents.
• Includes a Power Good output with surge completion delay to ensure compliance with IEEE 802.3bt startup requirements.

Power Over Ethernet (PoE) Controllers Applications

• High-power network endpoints requiring Type 4 PoE power delivery
• Wireless access points supporting advanced Wi-Fi standards
• PTZ cameras and video conferencing systems
• Digital signage displays with integrated networking

Power Over Ethernet (PoE) Controllers Procurement Notes

Verify the specific suffix RGWT against the manufacturer's latest datasheet to confirm tape-and-reel packaging and lead-free status. Ensure compatibility with the target PCB footprint for the 20-VQFN package. Confirm that the design accounts for the thermal dissipation requirements associated with the exposed pad in high-power Type 4 implementations.

Power Over Ethernet (PoE) Controllers Selection Notes

Select this component for designs strictly adhering to IEEE 802.3bt Type 4 specifications where maximum power transfer is critical. The integrated MOSFET simplifies bill of materials by eliminating external switching components. Consider the 0.1 Ω on-resistance for efficiency calculations and verify that the application environment remains within the specified -40°C to 125°C operating temperature range.

Power Over Ethernet (PoE) Controllers Part Context

This part belongs to the TPS2372 family of PoE PD interfaces, which also includes the TPS2372-3 variant designed for Type 3 applications. While sharing similar control logic and features like Autoclass and MPS, the TPS2372-4 is distinguished by its higher power handling capabilities and lower MOSFET resistance to support the increased current demands of Type 4 deployments.

Power Over Ethernet (PoE) Controllers Replacement Considerations

The TPS2372-3RGWT serves as a lower-power alternative for Type 3 applications but does not support the full 90 W capability required for Type 4. No direct pin-compatible substitutes with identical Type 4 ratings are documented in the provided source material.