FAN4801FNY_SN00170

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Modern techniques for improving the power factor in electrical systems are important for users in industrial, commercial and residential operations. The semiconductor device responsible for power factor correction is the Power Factor Correction (PFC) converter, which can improve the overall power factor of the system by reducing harmonics and power losses. The FAN4801FNY_SN00170 is one of the popular PFC converters widely used in applications such as computers, lighting, base stations, and power supplies. It is a monolithic integrated circuit (IC) designed to control off-line PFC pre-regulator, operating at either 110/220V AC input voltage range.

A PFC converter achieves power factor correction by redistributing the power in a sinusoidal waveform and improving the rectifier efficiency of a power supply circuit. The major components consist of a rectifier bridge, an inductor, two capacitors, a control circuit, a switching transistor, and an output filter circuit. When input voltage is supplied to the rectifier bridge, it converts the alternating current (AC) into direct current (DC). The inductor smoothly filters out the non-sinusoidal components from AC waveforms and also supports the input power to reduce the losses along the circuits. The capacitors store energy and improve the output waveform of the rectifier.

The switching transistor serves as the main switching element of the PFC converter and is connected to the control circuit. The control circuit adjusts the conduction angle of the switching transistor based on feedback components to regulate the output voltages. Since the input and output voltages of a PFC converter are uncorrelated to each other, the control circuit has to continuously monitor and adjust the conduction angle of the transistor to achieve higher power factor. The output filter circuit helps smooth out noise and interference from input signals and regulates output voltage against switching device fluctuations.

The FAN4801FNY_SN00170 PFC converter has some features that make it a sought-after choice for industrial, commercial, and residential applications. It has a wide operating temperature range of -40°C to +125°C to withstand high ambient working temperatures. The FAN4801FNY_SN00170 is designed to work with a power range from 0.5W to 500W, and it has a wide input voltage range from 85V to 265V AC. It has a high efficiency of 95% and a low output ripple of 10mV. The FAN4801FNY_SN00170 has an inbuilt soft start feature, which eliminates any inrush current at the time of start-up to protect the circuit and other connected devices.

The FAN4801FNY_SN00170 has a wide range of applications in power supplies, lighting, servers, etc. It works as a single-stage PFC converter and provides power factor correction up to 99%. It also provides active power factor correction without distortion and supports a wide range of switching frequencies. It meets international safety standards for surge protection and meets the CISPER22, Level 4 standards for emissions in all operating conditions. It is also capable of operating from a quiescent current of 4mA with 85V AC input voltage.

In summary, the FAN4801FNY_SN00170 is an important device for power factor correction in various applications. It has a wide operating temperature range, wide input voltage range, and high efficiency for different power levels. It also supports international safety standards and has in-built features such as soft start and surge protection. These features make the FAN4801FNY_SN00170 a reliable and efficient choice for power factor correction in industrial, commercial, and residential applications.

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