TPS78930DBVR

TPS78930DBVR application field and working principle

Introduction

TPS78930DBVR is a high-performance triple-output 5-A voltage converter family of Texas Instruments. The output of TPS78930DBVR voltage converter can reach as high as 2.5 A universal output, 1.5 A synchronous buck converter, and 1.5 A dedicated LDO. It provides the low-noise output voltages. This converter family provides up to 95% efficiency for universal output and consequently reduce heat dissipation. The TPS78930DBVR device is a versatile highly integrated solution provides efficient power from a single device to power a variety of mobile products and other applicaitons such as gaming consoles, set-top box and optical storage devices.

Application Field

As described above, TPS78930DBVR is a highly integrated power solution for 3.3/2.8V SoC dual-core processor supplies. It provides ultra low dropout voltage, industry-leading accuracy, high efficiency and fast transient response. All these features make TPS78930DBVR an excellent choice for a wide range of applications, such as notebooks, tablets, car navigation systems, set-top boxes, smart phones, TV sets and other consumer electronic device. Additionally, they are well-suited to battery operated systems such as smart meters and POS terminals.

Working Principle

The TPS78930DBVR is a switched-mode DC-DC regulator which converts a DC input voltage to a regulated DC voltage. The basic circuit block consists of an input voltage regulator, an error amplifier, a power switching device, a switching regulator controller, and a frequency compensation unit. The input voltage is first regulated by the input voltage regulator so that the input voltage from the electrical source is kept clean and stable. The output voltage is then regulated by the error amplifier and switching regulator controller by controlling the operation of the power switching device. The power switching device is also connected to an inductor and at least one capacitor, which is used for energy storage and filtering for a more steady output voltage.

Conclusion

The TPS78930DBVR is a triple output voltage converter family of Texas Instruments which has wide application in consumer electronic devices such mobile phones, notebooks and mobiles. It offers industry-leading efficiency, ultra low dropout voltage, high accuracy and fast transient response. Its working principle is based on the switched-mode DC-DC conversion technology involving an input voltage regulator, an error amplifier and a power switching device.