TPS24720RGTR

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The TPS24720RGTR is an advanced hot-swap controller from Texas Instruments that enables safe insertion and removal of a powered load from a live power source. The device is ideal for applications that require very low quiescent current, low-power consumption and board-space savings. It is also suitable for applications with frequent power cycles, multiple hot-plug connections, and applications with high-current loads (such as PCI Express, USB, SATA, and audio/video devices).

The TPS24720 is equally suitable for both AC and DC power supply lines, and its protection features ensure that the connected equipment remains safe. Other features include fault-tolerance, superior EMI performance, over-current protection, and regulator startup time delay.

The TPS24720 is active when it is enabled by the EN pin, allowing the load to be inserted or removed from the system safely. The VSEN/Threshold pin monitors the load voltage and limits it to a safe level. If the load voltage exceeds this threshold, the load is disconnected from the power supply and will no longer be able to draw current.

The device also has a low-side power switch for controlling the power supplied to the load. When the EN pin is asserted, the switch is opened and the load is disconnected from the power supply.

The TPS24720 also provides over-current protection. If the current exceeds the limit, the load is disconnected from the power supply. If the current is lower than the threshold, the switch is closed and the load is reconnected.

The TPS24720RGTR can also detect a short circuit condition. The Short Circuit Correlator (SCC) pin monitors the current flowing through the load. If a short circuit is detected, the supply voltage is removed from the load and the DSA pin is asserted.

Finally, the TPS24720RGTR can be configured to provide a startup delay when the system is powered up. The output voltage is held low until a predetermined time has elapsed, preventing current inrush into the system.

In conclusion, the TPS24720RGTR is an ideal hot swappable controller for applications with frequent power cycles, multiple hot-plug connections, and high-current loads. It provides over-voltage, over-current and short-circuit protection, as well as a flexible regulator startup delay. With its combination of features and flexibility, the TPS24720RGTR is an excellent choice for hot-swapping applications.

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