TPS61240DRVR

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TPS61240DRVR Application Field and Working Principle

Texas Instruments’ TPS61240DRVR is a fully integrated DC-DC Step-Down Converter, designed to be used with external MOSFETs, in both a synchronous buck and a buck-boost converter topology for a wide range of applications. TPS61240DRVR is part of the Texas Instruments Power management integrated circuits (PMIC) family and is classified as a DC-DC switching regulator, making it an efficient choice for a broad range of applications.

Application Field

TPS61240DRVR is a highly integrated power solution perfect for microprocessor and microcontroller-based systems that require flexibility, efficiency and ease of use. The device combines a DC to DC Controller and integrated MOSFET Drivers and is optimized for synchronous buck and buck-boost configurations. It is specifically designed to address a wide range of applications, including energy efficient microprocessors, systems with dense power regulation, USB Power Delivery (PD) system, Battery Backup systems and Data Center and Automotive applications.

In the area of microprocessors, TPS61240DRVR is ideal for low power solutions due to its wide 4V - 36V input voltage range and 400 kHz high-frequency operation. The device integrates two high-side MOSFET drivers that eliminate the need for an external driver, simplifying the overall system design. It also features Advanced Gains Panning that allows the user to fine-tune their solution for maximum efficiency and minimum output ripple.

In the area of Data Centers, TPS61240DRVR is capable of providing high levels of power density and efficiency. It is ideal for high-efficiency designs, due to its 3.2 mV accuracy over the entire load range and its low operating quiescent current. It also enables fast transient response, allowing the device to quickly recompense under transient loading conditions. Additionally, the parts have integrated remote sense pins, allowing it to make immediate adjustments to its load current when used with precision sense resistors.

For Automotive applications, TPS61240DRVR is an ideal solution due to its high- efficiency, wide temperature operation (-40°C - 125°C), over-voltage and over-temperature protection. The device also provides a ±4% Output Voltage accuracy for Cell Voltage tracking, allowing for a precise regulation of the individual cells of the battery pack, therefor allowing for precise control of the battery charge rate.

Working Principle

The TPS61240DRVR integrates the MOSFET Driver and the DC to DC Controller into a single IC with a Operating Switching Frequency range of c.400kHz. The byteproduct is a feature rich DC to DC buck-type converter. The device works by accepting an unregulated DC input voltage (4V to 36V) and converting it to a regulated DC output voltage (0.8V to 5V). The buck converter works by storing energy in an inductor, then releasing it towards the output when needed. That instantaneous energy is then regulated using the internal high-side and low-side power MOSFET drivers, allowing for efficient and fast response to sudden changes in load.

The output voltage is interpreted from the feedback pin that is connected to the output load. The comparison between the output voltage and the reference voltage is used to adjust the duty cycle of the power delivery, allowing for efficient transient response and wide load range support. To further improve the response, the Converter includes an external soft-start circuitry that allows for more accurate regulating during startup, increasing stability.

The TPS61240DRVR is a perfect example of the power of Texas Instruments’ PMIC family, integrating a wide variety of functions in a single IC. With its adjustable range and ultra-fast switching, it is ideal for a broad range of applications and boosts the performance of your current systems.

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