MXUPT28E3 Circuit Protection

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TVS-diodes are devices used in electronic circuits to protect the circuit from potential transient surge voltages. Transient surge voltages can damage sensitive electronic devices and can even damage electronic components that are not designed to handle them. The MXUPT28E3 is one of these such devices. This article will discuss the application field of the MXUPT28E3 and its working principle.

The MXUPT28E3 is designed primarily as an overvoltage protection device for digital and mixed signal lines. It is designed to be used in automotive and industrial applications as well as in consumer and sports applications. It is capable of suppressing transient voltage surge up to 28V for automotive applications and can provide up to 3.2kW of surge power. Its on-state voltage drop is also low which means that it does not significantly affect the voltage across the protected device.

The working principle of the MXUPT28E3 is relatively simple. When a transient voltage surge is detected, the device triggers and the transistor opens into conduction. This reduces the voltage to a level that the protected device can handle and even more, it protects it from the transient voltage surge. The device then shuts off after the surge is over and the circuit is protected. This process is known as crowbar protection and is the primary function of all TVS devices.

The device also has several features to help protect and enhance its performance. It has an integrated ESD protection circuit which helps protect the device from electrostatic discharge, and it also has a built-in crowbar threshold which provides overvoltage protection. Additionally, it also has a soft start feature which helps prevent inrush current and temporary overvoltage conditions. All of these features make the MXUPT28E3 an ideal protection device for applications requiring surge protection.

In summary, the MXUPT28E3 is a TVS-diode, which is designed primarily as an overvoltage protection device for digital and mixed signal lines. It can protect its circuit from transient voltage surge of up to 28V and can also provide up to 3.2kW of surge power. It also has several features such as integrated ESD protection, crowbar threshold, and soft start, which make it an ideal protection device for applications requiring surge protection.

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