TPS2376DDA-HG4

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TPS2376DDA-HG4 is a member of TI’s Power over Ethernet (PoE) Controllers Power Management ICs (PMICs). This IC comes with integrated protection, precision signal conditioning and advanced diagnostics. It is specifically designed to efficiently deal with the power management requirements of modern PoE systems.

The TPS2376DDA-HG4 is aimed at enabling designers to build robust PoE plus power sourcing equipment that meets the needs of their customers. The device gives designers all needed functionalities such as standards compliance, low power dissipation, flexibility, and advanced diagnostic capability. Moreover, multiple advanced protection functionalities are embedded in this device, ensuring safe operation of the system and converter under extreme conditions.

TPS2376DDA-HG4 provides efficient and robust power conversion, ruggedness and flexibility all needed in a single package. The TPS2376DDA-HG4 comes with Class 0,3 and 4 (max. 90W) support and provides compliance with IEEE 802.3af/at standards. With standard mode, Class 3 and Class 4 (with an external high voltage MOSFET) the device can power up from non-standby or standby applications. It is designed to enable direct connection to the device’s input. The device also offers open drain output with internal pull-ups, enabling Class 0 and Class 1 applications.

The TPS2376DDA-HG4’s working principle majorly consists of four core elements, which are power buffering and trimming, power protection, Power Over Ethernet (PoE) detection and IEEE 802.3 packet detection.

The power buffering and trimming element ensures that the device functions properly and efficiently over the specified temperature range. This is achieved by the slew rate control capacitors and external current sense capacitor. The power protection element helps protect the device in case of abnormal conditions like overvoltage, undervoltage, and overcurrent operations. It also has a dedicated power-down pin to enable the device to be powered down very quickly, in case of any faults or emergencies.

The Power over Ethernet (PoE) detection is based on frequency domain detections and includes automatic class detection, as well as source detect and output detect. Additionally, the tPS2376DDA-HG4 provides IEEE 802.3 packet detection, allowing Ethernet packet traffic to be monitored and managed. This helps the system to conserve energy by shutting down the unused link when idle or low data rate is used.

TPS2376DDA-HG4 is designed to bring the power management functions and efficient management of load current to Power over Ethernet (PoE) applications. In conclusion, the device is specifically developed for applications such as industrial switches, medical devices and point of load (PoL) powering. The device features various features such as ultra-low power consumption and high efficiency that ensure optimal power dissipation and system efficiency.

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