A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output capacitors close to the IC, and use short, wide traces for the power paths.
Ensure that the output capacitor has a low ESR, and the input capacitor has a high capacitance. Also, add a small resistor (e.g., 1 ohm) in series with the output capacitor to dampen oscillations.
The maximum ambient temperature for reliable operation is 85°C, but it's recommended to keep it below 70°C for optimal performance and reliability.
While the datasheet recommends a specific inductor value and type, you can use a different one as long as it meets the required inductance and current rating. However, this may affect the converter's performance and efficiency.
Use an oscilloscope to check the output voltage, input voltage, and switch node waveforms. Check for proper PCB layout, component values, and soldering. Consult the datasheet and application notes for troubleshooting guides.
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