TPS2371DR

Product Overview

Category

The TPS2371DR belongs to the category of integrated circuits (ICs) specifically designed for power over Ethernet (PoE) applications.

Use

This IC is primarily used in PoE systems to provide power and data transmission over a single Ethernet cable. It enables the delivery of power to various devices such as IP cameras, wireless access points, and VoIP phones.

Characteristics

• Supports IEEE 802.3af/at standards for PoE
• Provides power sourcing equipment (PSE) functionality
• Offers advanced power management features
• Enables efficient power delivery with low power dissipation
• Incorporates protection mechanisms against fault conditions

Package

The TPS2371DR is available in a small outline package (SOP) with eight pins. This package ensures easy integration into PoE system designs.

Essence

The essence of the TPS2371DR lies in its ability to simplify the implementation of PoE systems by integrating key functionalities required for power delivery and management.

Packaging/Quantity

The TPS2371DR is typically packaged in reels or tubes, containing a quantity of 250 units per package.

Specifications

• Input Voltage Range: 36V to 57V
• Output Voltage Range: 2.7V to 14V
• Maximum Output Current: 350mA
• Operating Temperature Range: -40°C to 85°C
• Power Dissipation: 1.5W (max)

Detailed Pin Configuration

The TPS2371DR features the following pin configuration:

1. VDD: Power supply input
2. GND: Ground reference
3. VPORT: Port voltage output
4. VDET: Detection voltage input
5. ISET: Current limit setting
6. NC: No connection
7. NC: No connection
8. NC: No connection

Functional Features

• Integrated detection and classification of powered devices
• Programmable current limit for power delivery
• Overcurrent and short-circuit protection
• Thermal shutdown protection
• Fast startup and recovery times

Advantages and Disadvantages

Advantages

• Simplifies PoE system design and implementation
• Supports industry-standard PoE protocols
• Provides efficient power delivery with low power dissipation
• Offers comprehensive protection mechanisms
• Enables flexible current limit programming

Disadvantages

• Limited maximum output current (350mA)
• Restricted operating temperature range (-40°C to 85°C)

Working Principles

The TPS2371DR operates by detecting and classifying powered devices connected to the PoE system. It then regulates the power delivery based on the device's requirements. The IC incorporates advanced power management features to ensure efficient power transfer and protection against fault conditions.

Detailed Application Field Plans

The TPS2371DR finds extensive application in various fields, including:

1. IP Surveillance Systems: Enables power delivery to IP cameras, simplifying installation and reducing cabling requirements.
2. Wireless Access Points: Provides power to wireless access points, eliminating the need for separate power supplies.
3. Voice over IP (VoIP) Phones: Facilitates power delivery to VoIP phones, streamlining network infrastructure.

Detailed and Complete Alternative Models

1. TPS2372DR: Similar to TPS2371DR but with higher maximum output current (500mA).
2. TPS23861: Offers enhanced power management features and supports higher power levels (up to 30W).

In conclusion, the TPS2371DR is a highly versatile IC designed for PoE applications. Its integration of key functionalities, efficient power delivery, and comprehensive protection mechanisms make it an ideal choice for various power sourcing equipment implementations.