TPS22922EVM

Evaluation and Demonstration Boards and Kits are essential for anyone looking to design, develop, and test new electrical and electronic circuits. This is a critical step in product development, as it provides designers with the ability to observe the behavior of the component, and to ensure that the circuit functions correctly. The TPS22922EVM is a evaluation and demonstration board for Texas Instruments\' TPS22922 power supply monitor IC, which provides a comprehensive range of functions for power supply monitoring and sequential system control. This application note will discuss the application field of the TPS22922EVM and its working principle.

Application Field of the TPS22922EVM

The TPS22922 device is a highly integrated power-controller solution that monitors supplies from 0.8V up to 5.5V. It offers 7 independent interrupt sources, offering system designers flexibility in setting up power failure protection. The TPS22922EVM is a evaluation and demonstration board that was designed to demonstrate the features and performance of the TPS22922 power supply monitor IC. The EVM provides an easy to use development platform with all the required components to evaluate the TPS22922 TPS22922EVM device. It includes a source and load resistor to simulate an output voltage, bypass capacitors, a voltage regulator to generate the supply voltage for the TPS22922 IC, and a voltage selector switch.

The TPS22922EVM provides a plethora of features that allow designers to explore the many capabilities of the TPS22922 device, such as: Programmable threshold settings for each of the seven interrupt sources, enabling designers to optimize protection for their system design; A variety of operating modes, allowing the device to adapt to different supply conditions; and Adjustable pushbutton reset circuitry, which allows designers to enable/disable the pushbutton reset at user-defined levels.

Working Principle of the TPS22922EVM

The TPS22922 device is a highly integrated power-supply monitor solution that monitors supplies from 0.8V up to 5.5V. The TPS22922EVM\'s primary function is to monitor the supply voltage for the TPS22922 device and ensure that it is within the specified range. This is done by monitoring the voltage at either the input or the output of the supply. If the voltage falls outside the prescribed range, the TPS22922EVM will activate an interrupt to alert the system that a potential danger exists and will shut down the external supply to prevent the user system from damage.

In addition to monitoring the supply voltage, the TPS22922EVM also provides an adjustable pushbutton reset circuit. This allows engineers to reset the device in cases where an external system fault has occurred. The pushbutton reset circuit is user configurable, so engineers can tailor it to their own system requirements. For example, the reset can be set to reset the device upon reaching a minimum voltage threshold, or can be set to reset the device upon detecting an over-voltage condition.

The TPS22922EVM is also capable of providing an additional level of system protection. It is equipped with a variety of operating modes, allowing it to detect a variety of faults, such as overvoltage, undervoltage, and power supply short-circuits. In the event that a fault is detected, the device will shut down the external supply, thus protecting the user system from damage.

Conclusion

The TPS22922EVM is an exceptionally capable evaluation and demonstration board for the TPS22922 power supply monitor IC, providing engineers with a comprehensive suite of features designed to monitor the supply voltage and provide a host of other useful features. It is highly configurable, enabling engineers to tailor its settings and functions to their own distinct system requirements. Thus, it is easy to see why the TPS22922EVM is an essential tool in any engineer’s arsenal.