UCC2919D

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

UCC2919D is an integrated, active-clamp synchronization fly-back controller and gate driver for hot swap applications. It is a member of Texas Instruments’ family of Hot Swap Controllers, which provides an effective hot swap solution for system boards that implements a wide variety of board protection, including overcurrent, overvoltage and short-circuit protection.The UCC2919D Hot Swap Controller is designed to provide low-cost active clamp fly-back power conversion for hot swap and board-level protection. It offers active current sensing, programmable output voltage, adjustable overcurrent protection and various other safety features to provide a complete power solution for the application.

Application Field of UCC2919D

UCC2919D is ideal for applications requiring Hot Swap and board-level protection. It can be a great solution in areas such as controlling increased power loads, meeting power grid regulations, and protecting sensitive circuits from overloads. It is also suitable for DC-DC converters, power bus converters, hot swap controllers, and AC-DC converters. Additionally, it can be utilized for Variable Frequency Drives (VFD), Momentary Overpower Protection (MOPP) hot pluggable devices, and single board computers.

Working Principle of UCC2919D

UCC2919D utilizes an active current sensing technique which allows for accurate current sensing and control of the converter. The output of the converter is usually held at a regulated voltage set by a resistor divider, while a fault voltage is set by another resistor divider. When an overcurrent condition is detected, the controller will shut down the output and activate an overcurrent protection circuit. This can help prevent damage to the load due to excessive currents.In addition, the UCC2919D also provides various other safety features such as overvoltage protection and short-circuit protection. Additionally, the UCC2919D includes a self-protected gate driver, which provides protection against over-current due to output transistor latch-up and input voltage transients.

The UCC2919D contains an adjustable overcurrent protection and a PWM core, which allows for an efficient transfer of power from the output and to the load. The output voltage is adjusted by setting the feedback voltage via the resistor divider, while the overcurrent is adjusted via the sense resistor. Furthermore, the UCC2919D contains an internal gate driver which helps to minimize parasitic inductance.

Conclusion

Texas Instruments\' UCC2919D Hot Swap Controller provides an effective, yet low-cost solution for hot swap and board-level protection. It provides accurate active current sensing and programmable output voltage, as well as adjustable overcurrent protection and various other safety features. Furthermore, its self-protected gate driver adds additional protection against over-current due to output transistor latch-up and input voltage transients. As such, the UCC2919D is ideal for applications requiring Hot Swap and board-level protection.

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