TPS3421EGDRYR

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The TPS3421E offers a robust and integrated solution for supplying power to vital circuits. It is designed to manage power-supply sequencing and control, power-up timing, system reset, and monitoring input voltage. This device has a wide variety of applications and can be used in many industry areas to protect power sources and system circuitry. In this article, we will discuss the application field and working principle of the TPS3421E.

Application Field of TPS3421E

The TPS3421E is a supervisor IC which is mainly used for monitoring and resetting microcontrollers and other circuits. It can be used for system-level power supply sequencing, voltage monitoring, and over-current detection and protection. This device is especially useful for embedded systems that require efficient and reliable power management. Additionally, the TPS3421E is also used in automotive, medical, industrial, computing, and consumer electronics applications.

The TPS3421E is a versatile and reliable device for all kinds of applications. The device can monitor two voltages, two thresholds, and two over-current thresholds. It also has the ability to trigger an interrupt whenever there is an out-of-range voltage or current detected. The watchdog timer can be used to reset the system in case of a power failure. Additionally, the TPS3421E can be used to select the source of power supply by enabling or disabling a voltage source. Moreover, the TPS3421E offers the possibility of monitoring up to four voltages using external resistor divider networks.

Working Principle of TPS3421E

The TPS3421E is designed to monitor and maintain the supply voltage of a microcontroller or other electronic system. The device operates by comparing the input voltage level against two voltage threshold levels: VDDA and VDDB. It then uses an internal voltage divider to create either a logic high or a logic low signal to indicate whether the input voltage is above or below the threshold. The TPS3421E can also monitor the DC output current by comparing it against two peak current threshold levels. In addition, the device incorporates a clock-based delay circuit and a reset circuit which is configured to reset the system under specific conditions.

The TPS3421E provides a reliable protection mechanism by monitoring voltage and current levels of the supply. It can detect over-current or over-voltage conditions and can send an interrupt signal to the microcontroller or CPU to shut down the system if necessary. Additionally, the device has the ability to reset the system after a period of time following a power failure. Furthermore, the TPS3421E can detect the source of the power supply by selecting either the primary voltage source or the secondary voltage source based on the enable signals.

Conclusion

The TPS3421E is a useful and reliable device for managing power in microcontroller-based systems. It can monitor two voltages, two thresholds, and two over-current thresholds. Additionally, the device can be used for system-level power supply sequencing, voltage monitoring, and over-current detection and protection. The device also has the ability to select the source of power supply by enabling or disabling a voltage source. Moreover, it offers the possibility of monitoring up to four voltages using external resistor divider networks. In summary, the TPS3421E is an effective and versatile device for many applications.

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