TPS54719RTET

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The TPS54719RTET is part of a new generation of high efficiency DC-DC switch regulators, which are specifically designed for the application of Point-of-Load (POL) regulators. It is part of the TPS5470x family of DC-DC switching regulators, offering high efficiency, low cost and excellent thermal performance. In this article, we’ll look at the application field and working principle of the TPS5470x family of DC-DC switching regulators.

Application Field

The TPS5470x family of DC-DC switching regulators is designed for use in a variety of applications, including mobile communications, wireless technology, embedded systems, automotive, industrial, and healthcare. They are particularly suitable for Point-of-Load (POL) regulator designs, due to their high efficiency, compact size, low cost and thermal performance.

The device is available in two internal configurations: a 5A/1A (TPS54719RTET) or 2A/8A (TPS54720RTET). Both parts feature wide input voltage range (4.5V to 26V), an adjustable output range from 0.6V to 6V, wide duty cycle range (50-95%) and an adjustable frequency range (500kHz to 5MHz).

Working Principle

The TPS5470x family of DC-DC switching regulators utilizes a two-phase, fixed frequency current mode control. This allows for precise regulation and control, while providing better efficiency at light loads than traditional single-phase control. The output voltage is regulated to a precise level using a voltage feedback loop and an externally adjustable feedback voltage. The output voltage is rapidly sensed and feedback to the error amplifier. The error amplifier output is then compared to the internal reference voltage, and the resulting error is fed through a phase-shift compensation network to the internal gate driver.

The internal gate driver provides the gate control for the power FETs and energy is transferred from the input supply to the output load via the FETs. The inductor current is sensed by a current sense resistor, which is then fed back to the controller to allow for accurate control and regulation. The device is also protected from overtemperature, short-circuit, open-loop, and overcurrent conditions.

Conclusion

In conclusion, the TPS5470x family of DC-DC switching regulators offers high efficiency, wide input and output voltage range, high frequency performance, and excellent thermal performance, making them ideally suited for Point-of-Load applications. They are also protected from overtemperature, short-circuit, open-loop, and overcurrent conditions. If you’re looking for a reliable, efficient and cost effective switching regulator, then the TPS5470x family of DC-DC switching regulators is an ideal choice.

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