Overview
The TPS2373-4RGWR is a high-power PoE (Power over Ethernet) interface chip developed by Texas Instruments, designed to meet the IEEE 802.3at and IEEE 802.3bt (draft) standards for Type 1-4 Powered Devices (PD). This component integrates all necessary functions to support PoE applications, making it suitable for high-power scenarios such as network cameras, wireless access points, and industrial IoT devices. With its low internal switch resistance, the TPS2373-4RGWR can handle power levels up to 90W for Type-4 and 60W for Type-3 operations, ensuring efficient power delivery over Ethernet cables.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Power Levels | 90W (Type-4), 60W (Type-3) | W | Supports IEEE 802.3bt draft |
| Internal Switch Resistance | 0.1Ω (Type-4), 0.3Ω (Type-3) | Ω | Typical values |
| Current Limit | 2.2A (Type-4), 1.85A (Type-3) | A | Typical values |
| Thermal Resistance (RθJA) | 38.0 (Type-4), 40.2 (Type-3) | °C/W | For VQFN package |
| Operating Temperature | -40 to 85 | °C | |
| Package | VQFN-20 | 20-pin |
Key Features
- Supports IEEE 802.3bt (draft) for Type 3 and Type 4 PoE applications.
- Advanced DC-DC startup functionality simplifies downstream design and reduces system costs.
- Robust 100V hot-swap MOSFET ensures reliable operation in high-power environments.
- Allocated power indicator output provides clear status of power allocation.
- Enhanced thermal performance with low junction-to-board thermal resistance.
Applications
The TPS2373-4RGWR is ideal for a wide range of high-power PoE applications, including network infrastructure, industrial automation, and IoT devices. It is particularly suited for use in devices such as wireless access points, IP cameras, and VoIP phones, where reliable and efficient power delivery over Ethernet is critical. Its robust design and advanced features make it a preferred choice for applications requiring compliance with the latest PoE standards.
Q & A
What is the maximum power supported by the TPS2373-4RGWR?
The TPS2373-4RGWR supports up to 90W for Type-4 and 60W for Type-3 PoE operations.
What standards does the TPS2373-4RGWR comply with?
It complies with IEEE 802.3at and IEEE 802.3bt (draft) standards for Type 1-4 Powered Devices.
What is the internal switch resistance of the TPS2373-4RGWR?
The internal switch resistance is 0.1Ω for Type-4 and 0.3Ω for Type-3.
What is the operating temperature range of the TPS2373-4RGWR?
It operates within a temperature range of -40°C to 85°C.
What package does the TPS2373-4RGWR use?
It is available in a 20-pin VQFN package.
Does the TPS2373-4RGWR support advanced DC-DC startup?
Yes, it includes advanced DC-DC startup functionality to simplify downstream design.
What is the thermal resistance of the TPS2373-4RGWR?
The junction-to-ambient thermal resistance is 38.0°C/W for Type-4 and 40.2°C/W for Type-3.
What are the typical applications for the TPS2373-4RGWR?
Typical applications include network cameras, wireless access points, and industrial IoT devices.
Does the TPS2373-4RGWR have a power indicator output?
Yes, it features an allocated power indicator output.
What is the current limit for the TPS2373-4RGWR?
The current limit is 2.2A for Type-4 and 1.85A for Type-3.
