TPS2350PWR

PMIC - Hot Swap Controllers - TPS2350PWR Application Field and Working Principle

The Texas Instruments TPS2350PWR is a monolithic high performance Hot Swap™ controller designed to provide safe boards insertion, power control & protection features to autonomously power distributed systems, including servers, storage and telecommunications equipment. This application note contains a brief section discussing the application field and working principles of TPS2350PWR.

Application Field

The TPS2350PWR is designed for efficient hot plugging. This is an ideal device for synchronizing any hot-swap operation in any system. It is designed with high speed and low power microcontroller interface logic to provide the accuracy and performance needed in hot-swapping function. It provides interlock, control and protection for hot-swap, low power, redundant and distributed supplies.

The TPS2350PWR is a system-level solution for hot-swapping. This includes the integration of high voltage MOSFETs for board-level interlock and protection functions. The TPS2350PWR comes with an adjustable current threshold that can be programmed from 4 A to 12 A. This ensures that the board does not exceed the maximum power level during the insertion and removal of boards.

TPS2350PWR is the ideal solution for any system that has multiple boards that need to be hot-swapped. It is also suitable for edge-of-panel and general hot-plugging applications. The device is designed to provide power control, interlock and protection features in a wide variety of distributed systems.

Working Principle

The TPS2350PWR can be connected to the power line and is powered by the signal line. The signal line controls the power switch-on. The board provides a signal voltage above the internally defined voltage threshold. This voltage is sampled by the device at the signal line and if it is above the set threshold then the power MOSFETs are enabled and the board is allowed to power up. This signal voltage can be adjusted to ensure that the power up sequence is smooth and safe.

The TPS2350PWR also provides overcurrent protection. This feature prevents over current conditions from causing any damage to the board. The device monitors the current on the output of the MOSFETs and when an over current condition is detected it will shut off the power supply immediately. An adjustable current threshold can be set to ensure that the desired current threshold levels are not exceeded.

The TPS2350PWR also has an integrated reset and supervisor function. This feature is used to ensure that the board is powered off properly in the event of a system reset. The device will send a reset signal to the microcontroller when the system is reset or when a board insertion failure is detected. The device will then wait for the microcontroller to respond with the required reset command before allowing the board to power up.

Conclusion

The TPS2350PWR is a monolithic high-performance Hot-Swap controller designed to provide safe board insertion, power control & protection features to autonomously power distributed systems. This device provides a system-level solution for synchronizing any hot-swap operation. TPS2350PWR also provides overcurrent protection and integrated reset and supervisor functions. This device is ideal for edge-of-panel and general hot-plugging applications in a wide variety of distributed systems.