TPS79915QDDCRQ1

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Introduction

TPS79915QDDCRQ1 is a linear voltage regulator, which belongs to the PMIC (Power Management Integrated Circuit) family. It is designed to solve the power supply demand and power management requirement in mobile and desktop electronic system. This device integrates switch-mode boost, switch-mode buck regulator and low drop out (LDO) linear regulator, which provides a low noise, efficient, low quiescent current, low cost and low design complexity power management system solution.

Applications

TPS79915QDDCRQ1 is mainly used in applications where the reliability, cost and complexity of a linear regulator system is of primary importance, such as in applications that require power supply demand solution, portable and/or mobile electronic device where size and weight of the power supply system is of primary importance or systems with limited thermal budget. Its applications include: automotive, mobile & handhelds, consumer, white goods, set top box, LED backlight, portable display device and gaming.

Working Principle

In general, the linear regulator consists of a set of pass elements which control the current flow by changing the resistance. In the simplest case, these elements are transistors, sometimes as MOSFETs, controlled by a control circuit. The control circuit is usually an integrated circuit that contains logic, such as comparators and voltage references, to adjust the pass elements to maintain the output voltage within a set accuracy.

The TPS79915QDDCRQ1 linear regulator works by internally controlling the resistance path by using a voltage feedback system and controls the amount of current passing through the output of the device.The output voltage is regulated by comparing an internal or external reference voltage to the voltage on the output, which is fed back to an error amplifier. The voltage amplifier controls the gate voltage of the pass element.

The TPS79915QDDCRQ1 linear regulator has a multiple number of features, with the most important being the high current protection circuit and the thermal shutdown function. The high current protection circuit is activated when the output current reaches and exceeds the set current threshold, and it will force the device into a low-power state. The thermal shutdown circuit is activated when the die temperature of the device exceeds a programmed temperature limit and will force the device into a high-impedance state.

Advantages

The TPS79915QDDCRQ1 linear regulator has several advantages over traditional linear regulators. One of the major advantages is that it is able to provide an output voltage with much higher accuracy than traditional linear regulators, due to the presence of an error amplifier. This can result in better performance and increased efficiency. Another significant advantage of the TPS79915QDDCRQ1 regulator is its low quiescent current, resulting in improved battery life. Finally, the TPS79915QDDCRQ1 regulator comes with a wide range of features, including high current protection and thermal shutdown, which ensure a safe and reliable operation.

Conclusion

The TPS79915QDDCRQ1 linear regulator is a power management integrated circuit which belongs to the PMIC family. It integrates a switch-mode boost, switch-mode buck and linear regulator and is designed to solve the power supply demand and power management requirement in mobile and desktop system. It is useful in applications that require reliable, cost-effective and low design complexity power management solutions. It provides an output voltage with higher accuracy, lower quiescent current, better performance and increased efficiency. Additionally, it comes with an array of features such as high current protection, thermal shutdown function and so on, providing a safe and reliable operation.

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