TPS54873PWP

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Texas Instruments’ TPS54873PWP is a voltage regulator specifically designed to optimize power consumption, maintain high levels of efficiency, and support multiple power distribution architectures. This low-power switching regulator provides an efficient, stable, and safe power solution for a wide variety of power applications.

Product Feature

The TPS54873PWP includes several integrated safety features, such as over- and undervoltage detection and protection, cycle-by-cycle current limit, and thermal shutdown and overvoltage protection. It also offers a wide input voltage range from 3.3V up to 18V and an adjustable output range from 0.65V to the input or 8V, whichever is lower. In addition to traditional features like soft-start, output voltage tracking, and OVP, the device can be configured with pre- and post-regulator multi-phase architectures, enabling the TPS54873PWP to easily meet a wide range of performance and efficiency requirements.

Application Field

The TPS54873PWP is ideally suited for low-voltage, low-power applications, such as mobile and embedded devices, point-of-load (POL) and industrial applications. It provides power support for multi-rail applications, and its low-duty-cycle operation ensures low losses and improved thermal management, allowing the TPS54873PWP to achieve up to 98% efficiency. It is also optimized for use in high-performance processor applications such as high-end gaming consoles, where total system power management is of the utmost importance.

Working Principle

The TPS54873PWP employs pulse width modulation (PWM) control to regulate an adjustable output voltage. The TPS54873PWP core starts with the internal startup circuit and a comparator, which monitors the feedback voltage and compares it to a reference voltage. When the output voltage is lower than the desired value, the comparator will set the enable pin high, turning on the power switch. During normal operation, the enable pin is controlled by the control loop, which lowers or increases the output voltage by varying the switching frequency, duty cycle, and current limit. The device operates with a peak current limit of 60A and a pulse cycle of 40kHz, providing smoothly graded transitions and helping to extend battery life.

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