TPS54719RTER

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TPS54719RTER Application Field and Working Principle

The TPS54719RTER is a high-performance, low-input voltage synchronous buck regulator that can regulate a wide input voltage range (3V to 46V), delivering up to 8A output current. It integrates a wide variety of features and is suitable for many applications including battery-powered systems, industrial control, IOT, and portable medical designs.

This regulator is part of the TPS5430 family of integrated DC-to-DC switching regulators from Texas Instruments which are characterized by excellent ac performance, small size, and high efficiency.

Application Field

Due to its high efficiency, wide input voltage range and flexible configuration options, the TPS54719RTER is suitable for a wide range of applications, including:

• Systems that require precise voltage regulation from a low-voltage input
• Portable medical equipment
• Industrial control systems
• Internet of Things (IoT) devices
• Battery-powered systems

Most notably, its wide input voltage range makes it ideal for systems that must operate in varying environmental conditions, such as in cars and planes.

Working Principle

The TPS54719RTER is a synchronous buck regulator, which uses two switches to step down the input voltage to the desired output voltage. It works by controlling the duty cycle of two switches, an upper switch (also known as the high-side switch) and a lower switch (also known as the low-side switch). During the ON-time, both switches are ON and current is transferred from the input voltage to the output voltage. During the OFF-time, both switches are OFF and the trapped energy from the input voltage is stored in the inductor. This trapped energy is then transferred to the output during the ON-time of the next cycle. This cycle continues until the output voltage reaches the desired voltage.

The TPS54719RTER can be configured for either continuous mode or in pulse frequency modulation (PFM) mode. In continuous mode, the output voltage is regulated by varying the duty cycle of the switches. In PFM mode, the output voltage is regulated by varying the frequency of the switching. The frequency of the switching is determined by the load level, which is monitored by an on-chip current sense amplifier. When the load is low, the frequency is reduced in order to improve efficiency. When the load is high, the frequency is increased in order to maintain regulation.

The TPS54719RTER also includes other features such as soft-start and adjustable current limit in order to further improve efficiency and safety. The device also includes a frequency synchronization pin which allows multiple devices to be synchronized together, making it ideal for applications where multiple regulators must be used.

Conclusion

The TPS54719RTER is a high-performance, low-input voltage synchronous buck regulator from Texas Instruments. Due to its high efficiency, wide input voltage range and flexible configuration options, the TPS54719RTER is suitable for many types of systems and applications. The TPS54719RTER is part of Texas Instruments’ TPS5430 family of integrated DC-to-DC switching regulators, and is characterized by excellent ac performance and high efficiency.

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