UCC2919DTRG4

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The UCC2919DTRG4 is a hot swap controller (PMIC) designed by Texas Instruments for intelligent power solutions in high current and hot swap applications. Hot swap controllers are designed to protect sensitive circuits against inrush current and output shorts, and maximize system performance. The UCC2919DTRG4 is designed to support up to 30A continuous load with up to 42.5A peak current capability, while also providing short circuit and over-current protection features.

The UCC2919DTRG4 is designed to enable the insertion and removal of hot swap loads while the power supply remains active. The controller enables an externally adjustable current limit, an adjustable slew rate, and an undervoltage lockout. Additionally, the device features a low power unit monitor mode and a thermal foldback feature to enable better power management.

The UCC2919DTRG4 circuit configuration is a programmable current limit, a feedback comparator with a low-resistor sense, a current sense amplifier and a regulator loop. The current limit sets the upper limit for the output current, and is adjustable through an external resistor. The regulator loop ensures output voltage regulation and the feedback comparator ensures the output voltage remains within its rated range. The low-resistor sense works with the current sense amplifier to provide input current sensing and output current limit protection. Finally, the current sense amplifier also has an adjustable slew rate, which sets the rate at which the output current rises and falls.

The UCC2919DTRG4 can be used in a wide range of applications, including networking and telecommunications, servers, consumer electronics, automotive and industrial control applications. Its overload protection, undervoltages and foldback protection allow for safe system operation and superior system performance. Its programmable current limit and adjustable slew rate make it suitable for use in applications requiring high current capabilities. Additionally, its low power unit monitor mode further enhances system control and power savings in long operating cycles.

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