UCC28511DW

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Power Factor Correction (PFC) is a technology used in AC power applications to reduce power consumption and increase power efficiency. The UCC28511DW is a step-down, zero-current-switch controller designed to provide efficient, smooth, and continuous regulation of AC output power with minimal losses. In this application note, we will discuss the application field of the UCC28511DW and its working principle.

UCC28511DW Application Field

The UCC28511DW is a high-performance power management solution for high efficiency applications, such as servers, display monitors and projector displays, medical equipment, and high-power AC adapters. It is specifically designed to reduce the power consumption of AC power applications by providing efficient, smooth, and continuous regulation of AC output power with minimal losses. The UCC28511DW features excellent power efficiency along with fast and smooth transition stages to ensure that the output remains within the required voltage window. The device also features an integrated power-factor correction circuit, which helps improve system power efficiency and reduce input harmonics.

UCC28511DW Working Principle

The UCC28511DW operates in a constant-gain, discontinuous conduction mode to regulate the output voltage. It employs an integrated PFC regulator to provide efficient, smooth, and accurate regulation of the output voltage. This PFC regulator utilizes a variable frequency control loop, which allows it to continuously adjust the switching frequency to maintain a stable output voltage while minimizing losses. The UCC28511DW features an input current limit, which helps reduce the peak input current and minimize input harmonics.

The device also features an over-voltage protection circuit, which helps to ensure the safe operation of the system in the event of an over-voltage condition. Finally, the UCC28511DW features a built-in start-up control circuit, which helps the system to automatically turn on when power is supplied. This helps ensure that the system can recover from a power failure and start up quickly, even in extreme environmental conditions.

Conclusion

In conclusion, the UCC28511DW is a high-performance power management solution for high efficiency applications. It is specifically designed to reduce the power consumption of AC power applications by providing efficient, smooth, and continuous regulation of AC output power with minimal losses. The device also features an integrated PFC regulator, which helps improve system power efficiency and reduce input harmonics. Additionally, it features an over-voltage protection circuit, an input current limit, and a built-in start-up control circuit, which help to ensure the system is operating safely.

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