TPA180 Circuit Protection

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TPA180 application field and working principle

TPA180 is a type of thyristor. It is a type of non-isolated 3-terminal solid-state switch semiconductor device with a thyristor structure and a three-terminal positive temperature coefficient (PTC) resistor. It is used in a wide variety of electronic equipment and supplies to prevent damage caused by over-current, over-voltage, over-temperature and line transients.

A thyristor is a semiconductor device similar to a transistor, but with the input connected to a gate instead of a base. It is a type of three-terminal electronic switch made up of five layers of alternating N-type and P-type semiconductor materials. A thyristor has two main parts, the addition and the control units. The addition unit consists of two main diodes connected in parallel. The control unit consists of two N-channel transistors connected in series.

The working principle of the TPA180 is based on the PTC resistor. It is a self-regulating positive temperature coefficient resistor. When the temperature increases, the resistance increases and when the temperature drops, the resistance drops. By connecting the TPA180 in series with the circuit, when the current running through the circuit exceeds a certain limit, it will heat up the PTC resistor and it will increase its resistance and thus limit the current passing through the circuit.

The application field of the TPA180 is very wide. It is commonly used in many electronic devices, including LED lighting, computers, AC and DC motor controllers, inverters, PLCs, and industrial control systems. It is also used in automotive applications, such as in charging systems, car body and engine controls, and in airbag deployment systems.

The TPA180 is also widely used in power supplies, such as in switched mode power supplies, uninterruptible power supplies, and in mobile components, such as in tablets, smart phones, and other portable devices. It can also be used in power over Ethernet adapters to protect both the device and the network from over-current and over-voltage.

In summary, the TPA180 is a type of thyristor. It has a PTC resistor that, when heated, increases the resistance of the circuit and thus limits the current passing through the circuit. It can be used in a variety of applications, including LED lighting, computers, AC and DC motor controllers, inverters, PLCs, and many more. It is an invaluable tool in many kinds of industrial and automotive applications, as well as in power supplies and mobile devices.

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