UCC2819D

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

UCC2819D is a specialized integrated circuit that has been developed by Texas Instruments specifically for the purpose of power factor control. It is intended to be used in both non-isolated and isolated power supply applications as well as systems utilizing both constant current/constant voltage (CC/CV) and variable frequency/variable voltage (VF/VV) operating modes.

Power factor control (PFC) is an important component of electrical system design. It helps ensure that the amount of energy which is supplied to an electrical system from the AC source is from the correct phase, the correct frequency and at the correct amplitude. It also helps maintain a relatively constant power quality, which is critical for many applications. PFC can be implemented either in an isolated or a non-isolated mode.

UCC2819D is capable of supporting both non-isolated and isolated power factor control applications. It achieves this by integrating various features for both operating modes. In non-isolated mode, UCC2819D implements a linear power factor correction (LPFC) technique, which is capable of controlling the power factor to between 0.95 and 1 without relying on additional control circuits. For isolated applications, the device supports flyback and forward control topologies and utilizes a valley-switching topology, which helps minimize switching losses while improving power conversion efficiency.

The UCC2819D incorporates different operating modes and protection features to ensure reliable operation and robust performance. It has a HYST pin that can be used to set a specific level of hysteresis and adjust the switchover range of the Device’s active operating state to detected load conditions. It also has a soft-start control for automatically controlling the startup current of the Device and a turn-off delay timer for delaying the Device’s turn-off after the current and voltage inputs reach certain limits.

The device contains an internal reference current generator, which allows for the adjustment of primary current and secondary current, as well as the device’s peak primary current and peak secondary current. This helps ensure proper operation and steady power delivery. The device also features a loop compensation block for optimizing the response of the device and for adjusting the frequency range of the device, which helps to increase the overall stability of the system.

The UCC2819D also incorporates a host of enhancement features such as programmable control, adjustable switching frequency, flexible power supply sequencing, pre-charging, and fault diagnostics, which help further improves the reliability and robustness of the device, while also making the system more efficient. In addition, the device also offers a variety of interface options, such as SPI, I2C and additional digital communication, which makes it easier to design and integrate the device into existing systems.

The UCC2819D is an ideal solution for non-isolated and isolated power factor correction applications. Its advanced features, combined with its linear and valley switching topologies, enable the device to provide high-performance power factor correction and power supply sequencing. With its multiple interface options, robust protection features and advanced switching techniques, the UCC2819D is the perfect choice for customers looking for an advanced and reliable solution for their power supplies.

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