Overview
The TPS2372-4RGWR from Texas Instruments is a high-power Power over Ethernet (PoE) Powered Device (PD) interface controller. It is designed to support the IEEE 802.3bt (Draft) standard, enabling high-power applications up to 90 watts for Type 4 PoE and 60 watts for Type 3 PoE. This device integrates all necessary features to implement an IEEE 802.3at or IEEE 802.3bt compliant PD, including automatic Maintain Power Signature (MPS) and Autoclass operation. The TPS2372-4RGWR is packaged in a 20-lead VQFN package and operates over a junction temperature range of -40°C to 125°C, making it suitable for a wide range of industrial and commercial applications.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value |
|---|---|---|---|
| Input Voltage Range | 0 to 57 V | 0 V | 57 V |
| Current Limit (TPS2372-4) | 2.2 A | 1.9 A | 2.5 A |
| Inrush Current Limit (TPS2372-4) | 335 mA | 275 mA | 395 mA |
| On Resistance (TPS2372-4) | 0.1 Ω | 0.1 Ω | 0.2 Ω |
| Junction Temperature Range | -40°C to 125°C | -40°C | 125°C |
| Package Type | 20-lead VQFN | ||
| Thermal Resistance (Junction-to-Ambient) | 38.0 °C/W |
Key Features
- IEEE 802.3bt (Draft) compliant for Type 3 and Type 4 PoE, supporting up to 90 W and 60 W respectively.
- Robust 100 V Hotswap MOSFET with low internal switch resistance.
- Automatic Maintain Power Signature (MPS) for low power standby modes.
- Autoclass operation for advanced system power optimization.
- Allocated Power Indicator Outputs and PG output with inrush completion delay.
- Supports ultra-low power standby modes and PoE++ PSE.
- Enhanced startup and converter operation with inrush delay enable.
Applications
- IEEE 802.3bt (Draft) compliant devices.
- Lighting systems.
- Power modules.
- Dual signature PD/Forced UPOE and 4PPOE systems.
- Pass-through systems.
- Security cameras.
- Multiband access points and pico-base stations.
Q & A
- What is the maximum power supported by the TPS2372-4RGWR?
The TPS2372-4RGWR supports up to 90 watts for Type 4 PoE and 60 watts for Type 3 PoE.
- What is the typical on-resistance of the TPS2372-4RGWR?
The typical on-resistance is 0.1 Ω for the TPS2372-4.
- What is the junction temperature range of the TPS2372-4RGWR?
The junction temperature range is -40°C to 125°C.
- Does the TPS2372-4RGWR support Autoclass operation?
- What is the purpose of the Automatic Maintain Power Signature (MPS) feature?
The Automatic MPS feature enables applications requiring very low power standby modes by generating the necessary pulsed current to maintain PSE power.
- What type of package does the TPS2372-4RGWR come in?
The TPS2372-4RGWR is packaged in a 20-lead VQFN package.
- What is the thermal resistance (junction-to-ambient) of the TPS2372-4RGWR?
The thermal resistance (junction-to-ambient) is 38.0 °C/W.
- What are some common applications of the TPS2372-4RGWR?
Common applications include IEEE 802.3bt compliant devices, lighting systems, power modules, security cameras, and multiband access points.
- Does the TPS2372-4RGWR support inrush delay enable?
- What is the purpose of the PG output with inrush completion delay?
The PG output with inrush completion delay ensures that the IEEE 802.3bt startup requirements are met by allowing the remote PSE to complete its inrush phase.
