TPS54140ADGQR

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TPS54140ADGQR is a monolithic synchronous buck voltage regulator that is designed for power device requirements, making it ideal for applications in the sensing, computing, networking, and storage sectors. This voltage regulator usessynchronous rectification to improve efficiency and reduce power losses, while also reducing external component count. It contains a peak current sense modulation (PCSM) controller which adjusts its internal reference voltage through peak current sensing and feedback loop to maximize the efficiency of the voltage regulation.

The TPS54140ADGQR operates in a wide input voltage range from 0.9V to 14V, providing an output voltage precision of 0.5%. The device also offers an adjustable operating frequency, allowing for optimal design conditions. It is able to regulate the output voltage with a ripple of maximum 1% at a switching frequency of 1MHz. The internal power FETs of this IC also deliver a maximum of 6A peak output current, making it suitable for a wide range of applications.

Applications of the TPS54140ADGQR DC-DC switching regulator include power management in cars, notebook, and televisions. It is also ideal for computing devices, personal electronics, andiot applications that require efficient power regulation.

Features of TPS54140ADGQR DC-DC Switching Regulators:

• Wide Input Voltage VIN Range from 0.9V to 14V
• 0.5% Output Voltage Accuracy
• Milliohm Internal Power MOSFETs
• Adjustable Operating Frequency up to 1MHz
• Integrated Gate Drivers with Internal Slope Compensation
• 1% Maximum Peak-to-Peak Output Voltage Ripple
• 6A Peak Output Current
• Low Quiescent Current of 700nA
• Adjustable Current Limit
• Integrated Soft Start
• Prebias Startup

The TPS54140ADGQR is a highly efficient and integrated DC-DC switching regulator. It uses an internal voltage reference to provide an output voltage precision of 0.5% and has a wide input voltage range of 0.9V to 14V. This IC also has a peak output current of 6A and an adjustable frequency of up to 1MHz. Moreover, it has peak-to-peak output voltage ripple of 1% and provides excellent stability and efficiency.

Working Principle of TPS54140ADGQR DC-DC Switching Regulator:

The TPS54140ADGQR is a synchronous buck voltage regulator. This type of DC-DC switching regulator utilizes two switches—one to connect the input voltage source to the output and another one to switch the output voltage—in order to regulate the voltage. The two switches are driven simultaneously and have opposite polarity, ensuring bidirectional movement of the current. The high-side PMOS switch is used for regulating voltage and is controlled by the internal switch controller. The power FETs are internally shut down when the input voltage is lower than the regulated output voltage, so that the output voltage remains stable. To compensate for power dissipation due to the low side power device, synchronous rectification is used which allows the low-side N-channel MOSFET to also conduct current in the reverse direction. This improves efficiency and reduces power losses. Additionally, differential peak current sensing and peak current mode control are used by the TPS54140ADGQR IC to reduce the internal operating ripple, improve efficiency and maintain output voltage stability. The TPS54140ADGQR also uses advanced protection features to protect the circuit against any damage if over temperature or overload occurs.

In conclusion, the TPS54140ADGQR DC-DC switching regulator is a highly integrated and efficient solution for power device requirements. It combines a peak current sense modulation, a wide input voltage range, adjustable operating frequency, and excellent output voltage accuracy in one package. Its wide range of features makes it ideal for applications in automobiles, computing devices, personal electronics, and IoT applications that require efficient power regulation.

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