TPS3126E18DBVT

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PMIC—Supervisors are limiters or monitors of vital electrical current and voltage impedances, used in several electrical systems. This technology is not just used in the aerospace and avionics industry, but also in a variety of commercial applications. The main purpose of PMIC—Supervisors is to provide reliable protection in electrical circuitries by signaling the detected hazardous state to the controller or motherboard.

TPS3126E18DBVT is one of the most advanced supervisory solutions from Texas Instruments, which offers overvoltage, overcurrent, brownout, watchdog and single fault protection for many different types of system designs. This family of application specific integrated circuits (ASICs) is designed for low and medium power supply applications and is able to monitor and control a wide range of voltages. It integrates a variety of features and protections, like reverse polarity and negative voltage protection and automatic power on reset (POR), by combining the built-in linear voltage regulator, a temperature monitor, a watchdog timer, and a state machine.

The TPS3126E18DBVT helps increase the robustness of the regulated power supplies, especially those used in medical, battery-powered, and industrial applications. This PMIC application field can be used to protect embedded systems against overvoltage, undervoltage, overcurrent, generator/overvoltage, watchdog monitor, as well as automatic cyclic override. Moreover, it is also suitable for dead battery protection, linear and non-linear power supply applications requiring power management, reset support and system monitoring.

The working principle behind the TPS3126E18DBVT is quite simple. It essentially consists of four different protection functions, each with its own controller. The overvoltage protection (OVP) is the main protection function, which is responsible for detecting too high voltage and limiting it back to the right level. The overcurrent protection (OCP) is responsible for monitoring and limiting currents which are too high. The brownout protection (BOV) keeps the system powered correctly by monitoring the output voltage. And finally, the watchdog timer (WDT) monitors the activity of the system, resetting it if necessary.

In summary, the TPS3126E18DBVT is a powerful PMIC supervisor solution, which offers robust protection in order to ensure reliability and safety in any system. Its various features and protections, such as overvoltage, overcurrent and brownout, ensure reliability and safety, while the automatic power on reset and temperature monitor provide advanced fault protection. In addition, its working principle is straightforward, making it a reliable and easy to use solution. As such, it is most commonly used for medical, battery-powered and industrial applications.

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