TPS259271DRCT

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Texas Instruments’ TPS259271DRCT hot-swap controller is designed for systems relying on a 12V powerbus, such as servers, networking systems, telecom switches, and storage systems. It simplifies the management of hotplug power systems, allowing for high power density and reduction in system complexity by providing an integrated solution for interoperability between the host and devices. The controller is also capable of driving up to 16 gate drivers to control up to 16 expanders. This offers flexibility when it comes to hot-swap management, meaning that a single integrated solution can be used in a variety of systems.

The controller’s main function is to monitor the current draw, hot-plug voltage, and temperature within a system and to protect the system in case of a fault. It supports individual current-limit sharing among multiple expanders, providing instant protections. Additionally, it supports voltage or temperature monitoring as well as over-current and over-voltage protection. The TPS259271DRCT also maintains a low ripple when operating at high speeds, making it suitable for high-performance applications.

The TPS259271DRCT works by monitoring the device under test (DUT) and comparing it to the reference voltages, currents, and temperatures. When a fault is detected, the controller turns off the power, protecting the system. This is accomplished by utilizing an external comparator on an auxiliary supply. When the DUT is below the reference voltage, the current monitor shuts off the power. The power then remains off until the DUT is above the reference voltage. This protects the system from excessive voltages as well as over- current and over-temperature conditions.

The TPS259271DRCT also provides protection against interference and EMI, shutting down the system in the event of an external disturbance. The controller automatically enables and disables the system, depending on its load, and can operate up to 40MHz. It also supports an adjustable voltage trip point, allowing it to be used in a variety of applications.

TPS259271DRCT hot-swap controllers offer a solution for hot-plugging and protecting systems engaging in dynamic load balancing and power sharing. It is suitable for a variety of applications and provides high speed, lowripple operation. Its over-current and temperature protection as well as interference and EMI protection make it reliable and well-suited for protection of power systems.

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