TPS3422EGDRYR

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The TPS3422EGDRYR, designed by Texas Instruments, is a PMIC (Power Management Integrated Circuit) Supervisors device. This device is used to provide power supply voltage supervision for a system, guaranteeing that the system keeps functioning properly in case of conditions leading to a power failure. In this article we will focus on the TPS3422EGDRYR’s application field and its working principle.

Application Field

The TPS3422EGDRYR is meant for monitoring three power supplies and includes support for controlling a power loss reseting or sequencing, and it is an ideal device for applications that need to protect their circuits from voltage dropouts and overvoltages. This device provides multiple systems monitoring functions, with up to three inputs available. It is suitable for low-dropout linear regulators as well as switching regulators. With the TPS3422EGDRYR, these regulators get power monitoring of a power input and keep the output supply voltage stable in case of a power loss.

The device can be used in applications such as computer motherboards, modems, cellular handsets, personal digital assistants (PDAs), routers, printers, document scanners that require failsafe power management, protecting them from potential damaging surges, brownouts and overvoltage conditions.

Working Principle

The TPS3422EGDRYR features an adjustable reset threshold offering greater flexibility during the design phase of the applications. It is able to monitor three power supplies in an uninterrupted manner and includes support for controlling power loss resetting or sequencing. The device is made of a supervisor circuit and an adjustable comparator that allows 3.2 to 6.4 V system power monitoring, as well as a reset output to control the power-up or power-down sequence of the application.

Using a low quiescent current and optimized standby power dissipation, the TPS3422EGDRYR provides vital power supply supervision in any critical system. Additionally, this device offers a high amount of flexibility in terms of power-up and power-down timings, allowing the users to configure them for their particular applications.

The low reset threshold makes it easy to reset the incoming power. When the threshold voltage is reached, the reset signal is sent to the main application processor to signal a power loss and then shut down the entire system. The TPS3422EGDRYR can also detect overvoltages, in which case the reset signal will be sent to the MCU in order to warn the user that an overvoltage has occurred and the system should be shut down.

Finally, the TPS3422EGDRYR is built with a precise voltage reference and can handle up to 2V of input overvoltage conditions without resetting, making the device suitable for any harsh environment.

Conclusion

In conclusion, the TPS3422EGDRYR is a PMIC (Power Management Integrated Circuit) Supervisors device that is intended for providing power supply voltage supervision for a system and control the power-up and power-down sequence. Its low reset threshold, precise voltage reference and support for controlling power loss resetting or sequencing make it a great choice for applications and devices that need to protect their circuits from voltage dropouts and overvoltage conditions.

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