AUIRFP1405

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The AUIRFP1405 is an Advanced UltraFET power Mosfet. Developed by International Rectifier (now owned by Infineon Technologies), it is a single-channel enhancement-mode power MOSFET with exceptionally low on-state resistance. This makes it well-suited for use in high-current applications. As such, the AUIRFP1405 is found in many modern power supply designs.

Working Principle

The actual operation of the AUIRFP1405 is quite simple. It consists of a source and drain electrode and a gate electrode. In the simplest terms, current flows between the source and drain electrodes through the transistor when a voltage is applied to the gate. This is called “enhancement-mode” because the current through the transistor increases as the gate voltage increases, as can be seen in the graph below:

This means that when the gate voltage is zero, no current flows through the transistor and the transistor is said to be in the off-state. As the gate voltage increases, the current through the transistor will increase, up to a certain maximum. This maximum is known as the drain current.

Typical Applications

The AUIRFP1405 is used in many power-related applications, such as DC-DC converters, AC to DC converters and switched-mode power supplies. The low-on-state resistance of the AUIRFP1405 allows it to be used in high-current and high-frequency applications, making it an ideal choice for switching and power conversion.

Furthermore, the AUIRFP1405 can be used in audio and power amplifier circuits, and in LED drivers. The AUIRFP1405 can also be used in application requiring fast switching times, such as in motor drives and DC motor controls.

Advantages of the AUIRFP1405

The AUIRFP1405 is an attractive choice for power and audio applications due to its low on-state resistance and wide range of operating parameters. Since it is a single-channel device, the AUIRFP1405 reduces the complexity of the circuit design, making it easier and cheaper to build.

The AUIRFP1405 also has many features that make it ideal for use in power-related applications. Its low gate-charge, high-Frequency operation, low input capacitance and excellent thermal characteristics make it an ideal solution for power switching applications.

Conclusion

The AUIRFP1405 is a popular choice for high-current power applications due to its low on-state resistance, high-frequency operation and wide range of operating parameters. It is suitable for use in both DC and AC circuits, is relatively easy to use, and is well-suited for high-current switching applications such as DC-DC converters, AC to DC converters, switched-mode power supplies, audio and power amplifier circuits, LED drivers, and motor drives and DC motor controls.

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