LNK574DG-TL 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

The Texas Instruments LNK574DG-TL is a member of their high voltage power supply control IC family and is classified as an offline switcher in the Power Management Integrated Circuits (PMIC) – AC DC Converter category. This IC is designed for medium/high power switch mode power supplies and has many integrated features that help improve its performance and reduce the overall number of components required in the design. This article will discuss the application field and working principle of the LNK574DG-TL.

The LNK574DG-TL is designed to be used in high power applications such as lighting, white goods, and other SMPS powered appliances that require a Power Factor Correction (PFC) controller and a High Voltage Power Supply (HVPS) controller. The IC handles up to 600V and comes with an integrated high-frequency MOSFET/diode driver that is optimized for high power applications. It also features an integrated 800V high voltage gate driver and an error amplifier to improve the efficiency and power factor of the power stage. The device also comes with several integrated protection features such as Over Temperature Protection (OTP) and Over Current Protection (OCP) which help to protect the power stage from damage.

The LNK574DG-TL is a current-mode PFC controller and HVPS controller that uses a ripple-carry-off current-mode (CCM) control method. The device has separate control for the PFC and the HVPS stages to maximize phase accuracy and system efficiency. There are also two independent error amplifiers to control the two stages separately. The IC also features several additional features such as a fixed-frequency frequency foldback with over voltage and over current protection, to help the system maintain the desired system parameters in times of varying input voltage and load current. The device also features an integrated start-up circuit and a built-in soft-start for the system.

The LNK574DG-TL IC also includes an integrated low-voltage reset (LVR) circuit to help ensure reliable start-ups, even if input voltage is low. The device also features a true secondary-side direct feedback interface (DSFI) circuit which enables high accuracy current sensing without extra components. The device also features an integrated stand-by power supply controller, so the system can easily enter stand-by mode to reduce power consumption.

The LNK574DG-TL IC operates in a wide ambient temperature range, from –40°C to +105°C, making it suitable for harsh environment applications. The device also has a wide supply voltage range from 5V to 20V, and it is designed to work with input voltages up to 600V and switching frequencies up to 500Khz. The IC can also be operated in reset free mode and it has a built-in batch shut down feature for better protection and safety.

In conclusion, the Texas Instruments LNK574DG-TL is a powerful and reliable PFC and HVPS controller IC designed for high power applications. The IC has several integrated protection features and is designed to work in a wide range of temperatures and input voltages. It also features an integral high voltage gate driver and an integrated start-up circuit. These features make the LNK574DG-TL an ideal solution for applications that require high-power, reliable and efficient SMPS solutions.

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