Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow a 2-layer or 4-layer board design with a solid ground plane, and to place thermal vias under the device to improve heat dissipation.
To ensure reliable operation in high-temperature environments, it's crucial to follow the recommended operating conditions, use a suitable thermal interface material, and consider using a heat sink or thermal management system to keep the junction temperature below 125°C.
When selecting input and output capacitors, consider the voltage rating, capacitance value, ESR, and ripple current rating. The input capacitor should be able to handle the input voltage and ripple current, while the output capacitor should be able to handle the output voltage and ripple current, as well as provide sufficient filtering.
To troubleshoot issues with the TRS3318ECPWR, start by verifying the input voltage, output voltage, and current. Check the PCB layout and component selection to ensure they meet the recommended specifications. Use an oscilloscope to analyze the output voltage ripple and noise, and consult the datasheet and application notes for guidance on troubleshooting specific issues.
Using a different inductor value or type than recommended can affect the performance and stability of the device. It may impact the output voltage regulation, efficiency, and noise performance. Always consult the datasheet and application notes to ensure the selected inductor meets the recommended specifications and operating conditions.
TRS3318ECPWR datasheet
by Texas Instruments
