TPS54394RSAR Integrated Circuits (ICs)

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TPS54394RSAR is a synchronous buck DC-DC regulator manufactured by Texas Instruments. It is a type of power management integrated circuit (PMIC) that provides a regulated output voltage to an appliance or circuit from an input voltage source. This specific part belongs to the category of switch-mode voltage regulators known as DC-DC switching regulators.

Designers of power-sensitive applications turn to DC-DC switching regulators to provide a regulated voltage output from an input supply. This type of regulator is more efficient than traditional linear voltage regulators because of their switch-mode power conversion technique. The TPS54394RSAR is a highly integrated version of a buck regulator consisting of both primary and secondary power stages, along with supporting circuitry.

The TPS54394RSAR is suitable for systems that require several voltage rails in a small form factor board design. Common applications include industrial servers, remotes, network nodes, routers and switches, portable medical equipment and devices, robotics, digital television and set-top boxes, and gaming systems.

The switching regulator circuit for the TPS54394RSAR is configured as a synchronous buck converter. This topology combines one or more power stages to provide a continuous current flow from the input to the output and minimize input power loss. A power switch is used to regulate the voltage and current levels. A third stage or accessory block is also included for additional functionality such as thermal protection and soft-start.

The TPS54394RSAR is designed to handle high power applications at both a fixed output and adjustable output voltage. The output is adjustable to a maximum of 3.6V, and is typically used to generate either a 5V or 3.3V main and several lower voltage rails. The maximum regulated output current is 4A, while the maximum switching frequency is 1MHz.

The power switch provides up to 98% of efficiency at maximum load and rated input voltage, and features minimum on-time and cycle-by-cycle current limiting circuit protection. Thermal protection is ensured by a primary-side thermal shut-down circuit, as well as having soft-start capability for the load.

The TPS54394RSAR is a single-phase, synchronous buck converter designed to achieve high efficiency and drive a wide variety of power circuits. The device is capable of handling much higher output currents and offers improved efficiency compared to the standard discrete designs, while providing the necessary circuit protection features to ensure the system is safe and reliable. With an adjustable output voltage and fixed output voltage, this DC-DC switch-mode voltage regulator is an ideal power solution for all kinds of modern equipment and circuits.

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