TPS51631ARSMR

TPS51631ARSMR Application Field and Working Principle

TPS51631ARSMR is a high performance clocked regulator with a pulse-width modulation (PWM) voltage control mode, designed by Texas Instruments. It is designed for high power density, low power applications requiring a high efficiency, wide-input range, and high reliability.

This highly integrated and efficient regulator is suitable for many power-hungry applications, ranging from personal computing, home appliances and infotainment, automotive and industrial applications. Banked power management architectures can be implemented with the TPS51631ARSMR to provide flexible, accurate power distribution required in many different motor control, home and industrial automation, and telecom-level applications.

Application Field

Its applications lie in protecting circuits during fault conditions of slow start, inrush current and overcurrent; shielding low voltage ICs from overvoltage faults; interfacing between different voltage systems; reducing the number of inductors in power systems; uninterruptible power supply (UPS) systems; and energy storage.

The integrated low drop out (LDO) regulator in the TPS51631ARSMR provides an easy-to-use solution for protecting low voltage ICs from overvoltage faults. This feature allows for a system to continue operation in the event of severe overvoltage spikes or surges. Additionally, the TPS51631ARSMR can be used in place of multiple inductors in power systems, thus reducing their cost and size, as well as improving their efficiency.

Furthermore, the voltage control of TPS51631ARSMR is ideal for Uninterruptible Power Supply (UPS) applications, as it uses advanced timing control techniques to ensure a controlled switch-on of the secondary output when the primary fails.

The superior endurance of the TPS51631ARSMR makes it suitable for applications requiring heavy energy storage, such as computer and cell phone battery chargers, drones, and robots.

Working Principle

At its core, the TPS51631ARSMR is a synchronous buck regulator. It generates a controlled output voltage by switching a power switch on and off at a fixed frequency, thus allowing for a current to be supplied to the load. During each switching cycle, a certain amount of energy is stored in the inductor, and then released as a regulated voltage to the load.

To optimize the output voltage, it implements two control loops - an interior PWM loop and an exterior voltage loop. The PWM loop operates by comparing the output voltage to a fixed reference voltage and then adjusting its output accordingly. The exterior voltage loop can be dynamically adjusted via an external voltage control signal in order to improve regulation and reduce overshoot.

The TPS51631ARSMR has an integrated low dropout (LDO) regulator that further enhances its protection from overvoltage faults. The LDO provides a constant regulated voltage even when the input voltage is much higher than the regulated output voltage. This ensures that low voltage ICs, such as microcontrollers, remain protected from any sudden overvoltage spikes or surges.

In addition to its safety features, the TPS51631ARSMR also provides an adjustable high-side current limit as well as internal thermal protection and overvoltage protection.

Conclusion

The TPS51631ARSMR is a robust and efficient voltage regulator designed by Texas Instruments. It is suitable for many power applications, ranging from personal computing, home appliances and infotainment, automotive, and industrial applications. Its combination of low power consumption, wide input range, and integrated features make it an ideal solution for battery chargers, UPS systems, energy storage, and low voltage protection.