Texas Instruments provides a recommended PCB layout in the UCC28050DR datasheet, but it's also important to follow general PCB design guidelines for switching regulators, such as keeping the power stage components close together, using a solid ground plane, and minimizing loop areas.
To select the right inductor, consider the output voltage, output current, and switching frequency of your design. Use the inductor selection guide in the UCC28050DR datasheet or online tools like the TI Inductor Selection Tool to find a suitable inductor.
The maximum junction temperature of the UCC28050DR is 150°C. It's essential to ensure that the device operates within the recommended temperature range to prevent overheating and ensure reliability.
While the UCC28050DR can operate up to 150°C, it's not recommended for use in high-temperature environments above 125°C without proper thermal management. Consider using a heat sink or thermal interface material to reduce the junction temperature.
To troubleshoot issues, start by checking the input voltage, output voltage, and current. Use an oscilloscope to monitor the switching node and output voltage. Check for proper PCB layout, component selection, and thermal management. Consult the UCC28050DR datasheet and application notes for guidance.
UCC28050DR datasheet
by Texas Instruments
