A good PCB layout for the UCC28701DBVT involves keeping the high-frequency switching nodes (e.g., SW and VIN) away from sensitive analog nodes (e.g., FB and COMP). Use a solid ground plane, and keep the power traces short and wide. TI provides a recommended PCB layout in the datasheet and application notes.
The inductor value depends on the output voltage, input voltage, and switching frequency. A good starting point is to use the inductor value calculation formula provided in the datasheet. You can also use TI's WEBENCH online design tool to help select the optimal inductor value.
The UCC28701DBVT is rated for operation from -40°C to 125°C. However, the maximum ambient temperature range may be limited by the specific application and the thermal design of the system.
To ensure stability, follow the compensation network design guidelines in the datasheet. Use a type-III compensation network, and adjust the values based on the output voltage and load current. You can also use TI's compensation network design tool to help with the design.
The UCC28701DBVT can deliver up to 10A of output current, depending on the input voltage, output voltage, and thermal design of the system. However, the maximum output current may be limited by the inductor and output capacitor selection.
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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.
