UCC2818NG4

The UCC2818NG4 is a quasi-resonant PFC (Power Factor Correction) controller integrated circuit. Power factor correction is critical in modern digital power supplies, and the UCC2818NG4 is one of the most accurate and reliable PFC controllers available today.

The principle of power factor correction is to reduce the power consumption at the power factor of the power line, so as to make the power consumption more close to the apparent power consumption, thus reducing the power utilization rate, reducing the power bill and reducing the loss of power transmission and distribution.

The UCC2818NG4 integrated circuit has excellent performance in power factor correction, offering one of the highest efficiencies in the industry of up to 98%. It has a range of features designed to optimize the power factor correction system, including an input voltage zero cross detection, an output voltage soft-start and an integrated peak current measurement circuit.

The UCC2818NG4 has a wide range of applications in many digital power supplies, including load sharing,, active PFC, Phase Shifting, Power Factor Correction (PFC), and Active Current Balancing applications. In addition, the integrated circuit is also used in solar photovoltaic systems, server power supplies, industrial power supplies and lighting power supplies.

The working principle of the UCC2818NG4 is relatively simple. It is designed to be used in bidirectional Buck-Boost applications to sense, monitor and regulate the input voltage of the power line with the output voltage for power factor correction. This process is done by adjusting the voltage conversion ratio, which is the ratio of the output voltage to the input voltage.

The UCC2818NG4 also has a built-in current measurement circuit that can detect the input current and output current, and with these two current measurements, it can also detect and correct any deviations in the power factor, minimizing the power wasted in power factor distortion.

Overall, the UCC2818NG4 is an excellent choice for high efficiency and reliable power factor correction systems. With its wide range of features, excellent performance, and wide range of applications, the UCC2818NG4 is undoubtedly one of the best PFC controllers available on the market today.