Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general high-frequency PCB design guidelines, such as using a solid ground plane, minimizing trace lengths, and using vias to connect the input and output capacitors to the ground plane.
The output inductor selection depends on the output voltage, current, and frequency. A good starting point is to use the inductor selection guide provided in the datasheet, and then simulate the design using tools like TI's WEBENCH or LTspice to ensure the inductor meets the required specifications.
While the datasheet specifies an operating temperature range of -40°C to 125°C, the maximum ambient temperature for reliable operation depends on the specific application and cooling conditions. As a general rule, it's recommended to derate the device's power dissipation by 1-2% per degree Celsius above 85°C to ensure reliable operation.
To ensure EMC compliance, follow the recommended PCB layout and component placement guidelines, use a shielded enclosure, and add EMI filters or common-mode chokes as needed. Additionally, perform EMC testing and simulation using tools like TI's EMC Simulator to identify and mitigate potential issues.
The recommended input capacitor type is a low-ESR ceramic capacitor, such as an X5R or X7R dielectric. The value depends on the input voltage and current, but a good starting point is a 10-22uF capacitor with a voltage rating of at least 1.5 times the input voltage.
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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.
