UCC2818AD

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Power Factor Correction (PFC) is an important part of power system design. It helps reduce energy losses, improves efficiency and reliability of the power system, and can also improve energy conversion efficiency. The UCC2818AD is an integrated PFC controller designed specifically for high efficiency, high current applications.

Features

The UCC2818AD is a highly integrated PFC controller, designed to deliver a high level of performance in power factor correction applications. It features an integrated high efficiency 3-level H-bridge inverter, over-voltage protection, over-current protection, and integrated soft-start circuitry. The controller integrated with this device also helps to further improve efficiency by eliminating the need for an external frequency compensation network. In addition, it offers an adjustable over-voltage protection and over-current protection thresholds.

Applications

The UCC2818AD is well suited for a wide range of demanding power factor correction applications, including lighting, UPS, AC/DC and SMPS power supplies, as well as other high power applications requiring high efficiency and reliability. It is an ideal solution for those applications requiring high power capabilities, compact size, and high efficiency.

Working Principle

The main principle behind PFC is to convert a rectifier output to a sinusoidal waveform, where the total current drawn from the mains always has a phase angle of zero degrees with the applied voltage. This allows for a more efficient conversion to the load, and reduces energy wasted in harmonics generated during power factor correction.The UCC2818AD works by using an internal PFC control loop which compares the rectified output current with an input reference signal and adjusts the voltage applied to the half-bridge inverter accordingly. The UCC2818AD also includes an over-voltage and over-current protection system which helps to protect the system from damage in the case of an abnormal operating condition.

Conclusion

The UCC2818AD is an ideal solution for high power, high efficiency and reliable power factor correction applications. It features integrated H-bridge inverter, over-voltage protection and over-current protection, as well as integrated soft-start circuitry. With its high power capabilities and high efficiency, it is an ideal solution for applications that require these features.

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