TPS54418RTET Integrated Circuits (ICs)

PMIC - Voltage Regulators - DC DC Switching Regulators

The Texas Instruments TPS54418RTET is a switching regulator of the synchronous step-down type. This device is capable of providing a 5A output continuous current, features a wide input range as low as 2.25V and as high as 11V, and is capable of providing up to a 24V output. It also incorporates selectable dual stage operation for optimized light load efficiency, integrated gate drivers, and adaptive on-time control.

Applications

The TPS54418RTET is typically used in applications such as point-of-load (POL) power supplies, digital power supplies, and low voltage distributed power systems. It is designed to meet the needs of applications requiring up to 24V output, such as monitor supplies, DC/DC converters, and high-density distributed power systems. It is also ideal for powering processors, memory, and other low power integrated circuits requiring an adjustable voltage.

Working Principle

The TPS54418RTET operates similarly to other synchronous step-down switching regulators. It works by switching a bipolar high-side N-channel MOSFET switch and a low-side N-channel MOSFET switch in a ratio that produces the desired output voltage and current. This ratio is determined by the differential voltage between the input and output, the amount of current flowing through the switches, the wattage being dissipated, and the load current.The TPS54418RTET incorporates several features that enhance the efficiency and reliability of the device. The integrated gate drivers improve switching efficiency by providing fast rise and fall times. Additionally, the device incorporates selectable dual stage operation to provide optimal light load efficiency and better efficiency at higher loads. The adaptive on-time control feature allows the device to switch the output at a frequency of up to 2MHz, allowing for a more efficient utilization of the devices.

Conclusion

The TPS54418RTET is a highly efficient switching regulator designed for applications requiring up to 24V output. It features integrated gate drivers, selectable dual stage operation, and adaptive on-time control for improved efficiency and reliability. This device is ideal for powering processors, memory, and other low power integrated circuits requiring an adjustable voltage.