TPS2372-3RGWR

Product Overview

Category

The TPS2372-3RGWR belongs to the category of power management integrated circuits (PMICs).

Use

This PMIC is specifically designed for Power over Ethernet (PoE) applications.

Characteristics

• The TPS2372-3RGWR is a highly efficient and compact device that enables power sourcing equipment (PSE) to deliver power to powered devices (PD) over Ethernet cables.
• It incorporates various features such as detection, classification, and current limiting, ensuring safe and reliable power delivery.
• The device supports both IEEE 802.3af and IEEE 802.3at standards, making it compatible with a wide range of PoE-enabled devices.
• It operates at high efficiency, minimizing power losses and maximizing power transfer to the PD.
• The TPS2372-3RGWR is available in a small package, allowing for space-saving integration into PSE designs.

Package and Quantity

The TPS2372-3RGWR is offered in a 20-pin VQFN package. It is typically sold in reels containing a quantity of 250 units.

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 3.3V to 12V
• Maximum Output Current: 600mA
• Operating Temperature Range: -40°C to 85°C
• Efficiency: Up to 95%
• Integrated Protection Features: Overcurrent, Overvoltage, and Thermal Shutdown

Detailed Pin Configuration

The TPS2372-3RGWR features the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. VOUT: Output voltage
4. CLASS: Classification resistor connection
5. DETECT: Detection resistor connection
6. ILIM: Current limit setting
7. VREF: Reference voltage output
8. FB: Feedback pin for voltage regulation
9. EN: Enable pin for device control
10. NC: No connection
11. NC: No connection
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection
17. NC: No connection
18. NC: No connection
19. NC: No connection
20. NC: No connection

Functional Features

• Detection and Classification: The TPS2372-3RGWR incorporates a robust detection mechanism that identifies the presence of a PD and determines its power requirements. It supports both 802.3af and 802.3at standards for accurate classification.
• Current Limiting: The device ensures safe power delivery by implementing current limiting functionality, protecting both the PSE and PD from excessive currents.
• Thermal Shutdown: To prevent overheating, the TPS2372-3RGWR features a thermal shutdown mechanism that disables the device when the temperature exceeds a specified threshold.
• Voltage Regulation: The PMIC maintains a stable output voltage, compensating for variations in input voltage and load conditions.

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power losses and improved energy utilization.
• Compact package allows for space-saving integration into PSE designs.
• Supports both IEEE 802.3af and IEEE 802.3at standards, ensuring compatibility with a wide range of PoE-enabled devices.
• Integrated protection features safeguard against overcurrent, overvoltage, and thermal issues.

Disadvantages

• Limited maximum output current may not be suitable for high-power applications.
• Operating temperature range may restrict usage in extreme environments.

Working Principles

The TPS2372-3RGWR operates based on the principles of Power over Ethernet (PoE). It receives power from the PSE and delivers it to the PD over Ethernet cables. The device performs detection and classification to identify the connected PD's power requirements accurately. It then regulates the output voltage and limits the current to ensure safe and reliable power delivery.

Detailed Application Field Plans

The TPS2372-3RGWR finds applications in various fields, including:

1. IP Cameras: The PMIC can be used in PoE-enabled IP cameras to provide power and data connectivity over a single Ethernet cable, simplifying installation and reducing wiring complexity.
2. Wireless Access Points: By integrating the TPS2372-3RGWR into wireless access points, power can be delivered efficiently, eliminating the need for separate power adapters.
3. VoIP Phones: PoE-enabled VoIP phones can benefit from the TPS2372-3RGWR's power management capabilities, enabling easy deployment and flexibility in office environments.

Detailed and Complete Alternative Models

1. TPS2372-2RGWT: Similar to the TPS2372-3RGWR, this model offers two output channels instead