UCC28511DWR Integrated Circuits (ICs)

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Power Factor Correction (PFC) is a technique that is used to improve the power efficiency of electronic devices. The UCC28511DWR is a power management IC (PMIC) that is designed for PFC. This article will discuss the application field and working principle of the UCC28511DWR.

The UCC28511DWR is a single-channel PFC controller that is optimized for flyback converters. This device is specifically developed for 50 – 550 W power supplies, and is typically applied in AC/DC adapters, LCD TVs, displays, and other power applications. With the UCC28511DWR, there is an integrated compensation that optimizes the control of low frequency operation without sacrificing efficiency. In addition, it has a VCC undervoltage lockout protection, overvoltage protection, thermal-overload protection and hiccup mode capabilities.

The UCC28511DWR has two operating modes: Critical Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM). By using CCM and DCM, it is optimized for both low-line and high-line applications. In CCM mode, the converter will use a fixed number of switching cycles to regulate the power factor. When power is low, the resonance frequency slows down and the CCM uses fewer pulses to regulate the power factor. On the other hand, when power is high, the resonance frequency increases and the CCM needs more pulses. In DCM mode, a variable number of switching cycles is used. The variable number of cycles is adjusted in order to optimize the power factor during higher power applications. This helps to ensure that the converter is operating at maximum efficiency.

Overall, the UCC28511DWR is an ideal choice for any applications that require a single-channel PFC controller. Its ability to operate in both CCM and DCM makes it well-suited for both low-line and high-line applications. In addition, its integrated compensation ensures that the power factor will be regulated without sacrificing efficiency. This makes it a great choice for AC/DC adapters, LCD TVs, displays, and other power applications that require high power efficiency.

The specific data is subject to PDF, and the above content is for reference