TPS61131PW

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The decentralized TPS61131PW is a buck-boost regulator that offers an integrated solution providing simultaneous control of both the synchronous buck and an boost regulators. It has several application fields and working principles. This article will discuss these in the context of PMIC - Voltage Regulators - Linear + Switching.

First of all, for powering devices such as small or remote displays and sensor nodes, the TPS61131PW provides the ideal solution. It has two functional regulators that can operate in buck or boost mode. For example, the synchronous buck regulator can operate between 2.6V and 5V, while the asynchronous boost regulator allowing output voltage up to 20V to output higher voltage while maintaining efficiency. So it is well suited for input sources such as +3.3V or +5V.

This TPS61131PW can also be used in commercial and industrial lighting control systems, providing automotive safety solutions, powering consumer electronics and IoT tools, and providing power to low-power sensors and chipsets. The integrated device offers both buck and boost regulators with a small form factor, allowing designers to power more complex systems with a single integrated solution.

In terms of working principle, the TPS61131PW can be divided into two working modes. The buck mode operates with PWM control to ensure adjustability and high efficiency when the input voltage is higher than the output voltage. It draws a constant current from the input and transforms it into a constant output voltage. At the same time, the output voltage of the asynchronous boost regulator ensures a high switching frequency and steady working condition. Compared to the buck regulator, the boost mode operates with an inductor and has the function of DC to DC conversion, motivating the transformation of the input to the output voltage.

The TPS61131PW offers designers a single integrated solution that features both buck and boost regulators and also delivers high efficiency. It is ideal for providing power to small, remote displays, sensing nodes, and low-power sensors, as well as being suitable for industrial and commercial applications.

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