TPS23770PWPR Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Controller (PD), DC/DC
Number of Channels:	1
Power - Max:	12.95W
Internal Switch(s):	Both
Auxiliary Sense:	No
Standards:	802.3af (PoE)
Voltage - Supply:	0 V ~ 67 V
Current - Supply:	1mA
Operating Temperature:	-40°C ~ 85°C
Package / Case:	20-PowerTSSOP (0.173", 4.40mm Width)
Supplier Device Package:	20-HTSSOP
Base Part Number:	TPS23770

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Introduction

Power Over Ethernet (PoE) is a technology for providing both power and data over a single Ethernet connection. PoE systems provide an efficient, cost-effective and secure way to supply power to various devices over an ethernet connection. The TPS23770PWPR is a Power Over Ethernet (PoE) Controller and is part of Texas Instruments\' (TI) family of Power Management ICs (PMICs). It provides a wide range of features and functionality to deliver secure and reliable power over Ethernet and PoE systems. Additionally, it is highly efficient, consumes very little electricity, and is fully compliant with the 802.3af/at standard specifications.

Features and Benefits

The TPS23770PWPR PoE controller offers a wide range of features and benefits, including:- High Efficiency: This device is highly efficient, providing both electrical and thermal advantages.- Energy Savings: The TPS23770PWPR uses very little power, significantly reducing energy consumption and energy costs. - Compliance: This device meets the IEEE 802.3af and 802.3at standards for PoE systems, ensuring better performance and reliability.- Flexibility: The TPS23770PWPR can accommodate various Ethernet configurations, including 1000BASE-T and 10BASE-T connections. It\'s also able to support a wide range of data rates.

Application Field

The TPS23770PWPR is ideally suited for use in a wide range of PoE applications, including: - IP Phones- IP Cameras - Wireless Access Points - Wireless Video Surveillance - Networked Security Systems- Medical and Industrial Equipment

Working Principle

The TPS23770PWPR works by detecting the presence of a PoE source (e.g. an Ethernet switch) and then providing the necessary power to any connected devices. It connects directly to the Transmit Data (TX) and Receive Data (RX) pins of the Ethernet port and uses a Method B detection. This method BD detection operates by looking for a signal on the specific pair of lines to determine the presence of a PoE source.The controller then automatically negotiates the data rate, type of power delivery, and power class. It supports several power classes including Class 0 (0.44-6.49 W), Classes 1-4 (5.5-25.5 W), and Classes 5-7 (25.5-51 W). Once the power class is determined, it then determines the amount of power needed to be supplied and adjusts the output accordingly.Finally, the TPS23770PWPR measures the current and voltage levels of the power supply and signals the PoE source (e.g. switch) when overload conditions occur. This ensures that the power to the device is never exceeded and provides improved protection for the source, device, and whole system.

Conclusion

The TPS23770PWPR PoE Controller is a highly efficient, cost-effective and secure solution for Power Over Ethernet applications. It\'s able to accommodate a wide range of Ethernet configurations and data rates, and meets the IEEE 802.3af and 802.3at standards for PoE systems. Additionally, it provides protection against overloading and ensures the safety of the Power Over Ethernet system.

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