Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for switching regulator layout, 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, switching frequency, and output voltage ripple requirements. 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.
While the datasheet specifies a maximum input voltage of 15V, it's recommended to derate the input voltage to 13.5V to ensure reliable operation and to account for voltage spikes and transients.
The TPS61280YFFT has a thermal shutdown feature that turns off the device when it exceeds a junction temperature of 150°C. To ensure operation within thermal limits, it's essential to provide adequate heat sinking, use a thermally conductive PCB material, and follow TI's thermal design guidelines.
While the TPS61280YFFT is rated for operation up to 125°C, it's essential to derate the output current and input voltage to ensure reliable operation at high temperatures. TI provides thermal derating guidelines in the datasheet to help with this.
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TPS61280YFFT 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.
