How to use TVS tube to achieve the protection of automotive electronic components

TVS tube (Transient Voltage Suppressor) is a circuit protection device used to protect electronic components, which can quickly respond to the transient voltage in the circuit and protect the subsequent circuit from the damage of the transient voltage. In automotive electronic components, due to the poor working environment of automotive electronic equipment, it is often affected by electromagnetic interference, overvoltage and other factors, so the use of TVS tube to protect automotive electronic components is very necessary.

The working principle of the TVS tube is to add a voltage stabilizer to the circuit, when there is overvoltage in the circuit, the TVS tube will automatically respond and guide the overvoltage energy to the ground, thus protecting the circuit behind from damage. TVS tubes are usually made of zinc oxide (ZnO) and silicate materials, with fast response speed, strong energy absorption capacity, small size and other advantages, so it has been widely used in the protection of automotive electronic components.

In automotive electronic components, the common use of TVS tubes in the following scenarios:

1. Protect the generator

Automotive generators are often affected by electromagnetic interference, overvoltage and other factors, resulting in unstable output voltage, the use of TVS tube can guide the overvoltage energy to the ground, to protect the generator from damage.

2. Protect the battery

Car batteries in the charging and discharging process, will also be affected by overvoltage and overcurrent, the use of TVS tube can protect the battery from damage.

3, Protect the electronic control module

The electronic control module of the car is one of the most important parts of the automotive electronic system, and any damage will have a significant impact on the performance and safety of the car. The use of TVS tubes protects the electronic control module from overvoltage and overcurrent from both inside and outside the automotive system.

4. Protect vehicle electronic equipment

Modern cars are often equipped with a variety of electronic equipment, such as car audio, navigation, tachographs, etc., which need to be protected from electromagnetic interference and overvoltage from the car's electrical system. Using TVS tubes can protect these devices from damage.

In short, TVS tube is a very important protection device for automotive electronic components, which can protect automotive electronic components from the influence of overvoltage and overcurrent from the internal and external of the automotive system, thereby improving the performance and safety of the car.