A recommended PCB layout for optimal thermal performance would be to have a solid ground plane on the bottom layer, and to use thermal vias to connect the top and bottom layers. This helps to dissipate heat more efficiently.
To ensure reliable start-up of the converter, make sure to follow the recommended start-up sequence, which is to apply the input voltage before enabling the converter. Also, ensure that the input voltage is within the specified range and that the output capacitors are properly sized.
The maximum allowed capacitance for the output filter capacitors is not explicitly stated in the datasheet, but as a general rule of thumb, it's recommended to keep the total output capacitance below 100uF to avoid stability issues.
While the datasheet recommends a specific type and value of input capacitor, you can use a different type or value as long as it meets the specified ripple current and voltage ratings. However, be aware that this may affect the converter's performance and efficiency.
To troubleshoot issues with the converter's output voltage regulation, first check the input voltage and ensure it's within the specified range. Then, verify that the output voltage sense lines are properly connected and that the output capacitors are properly sized. If the issue persists, check for any signs of overheating or component failure.
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