Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Controller (PD)
Number of Channels:	1
Power - Max:	25.5W
Internal Switch(s):	Yes
Auxiliary Sense:	Yes
Standards:	802.3at (PoE+), 802.3af (PoE)
Voltage - Supply:	0 V ~ 57 V
Current - Supply:	285µA
Operating Temperature:	-40°C ~ 85°C
Package / Case:	8-PowerSOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SO PowerPad
Base Part Number:	TPS2378

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TPS2378DDAR - Power Over Ethernet (PoE) Controllers

Power over Ethernet (PoE) is an evolving technology which is being increasingly used across different industries to deliver both power and data over one set of cables. PoE is often used to install analytics cameras, Wi-Fi access points, Voice over Internet Protocol (VoIP) phones, and other IP-enabled devices without the need for local power outlets.Texas Instruments\' TPS2378DDAR is a PoE controller which helps users to deliver power and data over Cat 5e Ethernet cables. This PoE controller is based on the IEEE 802.3af-2003 and IEEE 802.3at-2009 standards, and provides four differential data pairs, two signature pairs and two power pairs. It allows up to 25.5 W of power to be supplied over two Cat 5e cables thanks to its high current capability of up to 3.8 A per pair at 24 V supply voltage.The TPS2378DDAR is an ultra-efficient device which features a comprehensive set of features and protections to ensure secure and reliable operation when delivering power over Ethernet. It features Dual Signature Isolation which provides galvanic isolation between powered equipment (PD) and powered device (PD) in order to protect the PD from high common mode voltages etc. It also features Intelligent Power Management (IPM) which detects a PD and allows up to four PDs to manage power allocation. This feature is essential for applications such as IP cameras, Wi-Fi access points, lighting, and door locks which require multiple PoE connections.The TPS2378DDAR also features both Cycle-by-Cycle and Hiccup Over-Current Protection to protect components from damages due to current kickbacks, inrush current, and short circuits. It also has an integrated temperature monitor with a programmable temperature threshold, to add additional protection when operating in harsh environments.The TPS2378DDAR is available in a low-profile 24-pin TSSOP package, making it an ideal solution for automotive, healthcare, and industrial applications where cost and power efficiency often matter the most. It\'s also fully certified and compliant to major safety and environment standards, making it a reliable choice for applications where power over Ethernet is needed.In conclusion, the TPS2378DDAR PoE controller from Texas Instruments is a highly efficient, fully certified and compliant power over Ethernet controller which helps users to deliver power and data over Cat 5e Ethernet cables. Its comprehensive set of features and protections help ensure secure and reliable operation for various industrial, healthcare, and automotive applications.

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