TPS2376DDA-H

Series:	--
Packaging:	Tube
Part Status:	Active
Type:	Controller (PD)
Number of Channels:	1
Power - Max:	12.95W
Internal Switch(s):	Yes
Auxiliary Sense:	No
Standards:	802.3af (PoE)
Voltage - Supply:	0 V ~ 57 V
Current - Supply:	240µA
Operating Temperature:	-40°C ~ 85°C
Package / Case:	8-PowerSOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SO PowerPad
Base Part Number:	TPS2376-H

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Power Over Ethernet (PoE) Controllers

Power Over Ethernet (PoE) is an increasingly popular form of communication between devices that can provide power and data connection via an Ethernet cable. This modern technology requires advanced controllers to effectively manage the power and data transmission. This article reviews the application field and working principle of the TPS2376DDA-H as an example of a PoE controller.The TPS2376DDA-H is a single port Power over Ethernet Plus (PoE+) controller. It is designed for applications in the PoE and PoE+ applications that both require and use power up to 30W. It is capable of working in both the type 2 PD (Power Device) mode and the type 1 PSE (Power Supply Equipment) mode, which facilitates power transmission between PSEs and PDs. It features a PD detection algorithm that can detect when a PD is connected and automatically enable the IEEE802.3at power management register. In addition, the TPS2376DDA-H features a low Standby Current Mode (SCM) of only 150µA, improving system efficiency and lowering the overall power consumption. It also offers two Reverse Interference Reduction (RIR) circuits that eliminate power disturbances from the data stream of the network system. Furthermore, this part includes a constant frequency hysteretic current mode PWM controller that ensures steady output power and helps reduce noise. Applications for the TPS2376DDA-H include industrial, commercial, medical, and automotive PoE applications. They are excellent for applications that require up to 30W of power, such as Wifi access points, Gigabit Ethernet, surveillance cameras, intercom systems and audio/video streaming. They have been implemented into various installations including vehicle charging, asset tracking and medical equipment.The TPS2376DDA-H functions by utilizing a programmable power-loss detection timer chip. This chip is used to detect the amount of power lost in the system and to generate an associated interrupt signal. It then triggers the power management register, which disables the power supply when the power is lost and returns to normal operation when power is restored. The chip also features temperature protection, which works by monitoring the temperature of the system. When the temperature exceeds the set limit, the chip will protect the system by disabling the power supply.In conclusion, the TPS2376DDA-H is an advanced and efficient single-port PoE+ controller. It is great for applications such as surveillance cameras, intercom systems, and audio/video streaming. It offers a detection algorithm for PDs, a low Standby Current Mode, two Reverse Interference Reduction circuits and a constant frequency hysteretic current mode PWM controller. All of these features make the TPS2376DDA-H an ideal solution for PoE+ and PoE applications that require or use up to 30W of power.

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