Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general high-frequency layout guidelines, such as keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing trace lengths and widths.
The selection of the inductor depends on the output current, output voltage, and switching frequency. TI provides an inductor selection guide in the datasheet, and online tools such as the TI Inductor Selection Tool can also be used to find a suitable inductor.
The maximum input voltage is 15V, but it's recommended to operate the device within the recommended input voltage range of 2.7V to 12V for optimal performance and reliability.
To ensure stability, follow the recommended component values and PCB layout, and make sure the output capacitor is properly selected. Additionally, the device has a built-in slope compensation circuit to prevent oscillation, but it's still important to follow proper design practices.
The thermal derating of the device is specified in the datasheet, and it's typically around 30°C/W. To calculate the thermal derating, use the formula: TJ(max) = TA(max) + (PD x θJA), where TJ(max) is the maximum junction temperature, TA(max) is the maximum ambient temperature, PD is the power dissipation, and θJA is the thermal resistance.
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TPS61299YBHR Overview
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
