TPS2373-3RGWT

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Power Over Ethernet (PoE) Controllers (PMIC): TPS2373-3RGWT application field and working principle

The TPS2373-3RGWT is a Power Management Integrated Circuit (PMIC) optimized for Power over Ethernet (PoE) applications. It is specifically designed for Power over Ethernet applications, integrating a multitude of functions to simplify system power delivery.

The TPS2373-3RGWT is an advanced addressing, high-voltage Power over Ethernet (PoE) controller with Regulation and Advanced Management features. It supports the advanced variable bus current regulation protocols and the True Industry-standard Power over Ethernet (PoE) (IEEE802.3af class 3) standard, providing a robust platform for developing a variety of scalable and advanced PoE systems.

Application field:

The TPS2373-3RGWT is suitable for a wide range of Power over Ethernet (PoE) applications including:

• Network-driven point-of-sale machines
• Network-driven displays
• Networking-enabled phones
• Voice-controlled home automation systems
• IP cameras/ Surveillance systems

Features:

• Input voltage range: 12V to 52V
• Output current: 8A
• Dimming control
• Integrated thermal protection
• Adapter and load detection
• Integrated switching MOSFET
• High power factor: better than 0.93
• Operating temperature range: -40°C to +85°C

Working principle:

The TPS2373-3RGWT receives the input power from either an external AC adapter or Power over Ethernet (PoE) cable. It then regulates the input power and supports PoE power sourcing equipment (PSE) functions such as powering the PD and regulating the output current. The true Power over Ethernet (PoE) capability of the TPS2373-3RGWT controller is possible due to the integration of an addressable and control signal extraction circuitry.

The device features an integrated linear and PWM dimming control. This allows the user to dim the output voltage proportionally to an input analog control signal. It also includes a load detection circuitry that supports both resistive and capacitive loads, allowing the device to detect the connected load and apply optimal power. The device also includes a data signal extraction circuitry that allows the PSE to detect the connection of the PD and extract device information.

The TPS2373-3RGWT controller also features several protection circuits including a 8A current limiting circuit, an overvoltage protection circuit, an adjustable over-temperature detection circuit, and over-voltage lock-out circuit. These protections help ensure that the connected system is safe from damage from excessive currents or voltages.

The TPS2373-3RGWT controller is an ideal choice for Power over Ethernet applications that require control and regulation of the output power.

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