Murata recommends a 2-layer PCB with a solid ground plane on the bottom layer and a thermal relief pattern on the top layer to ensure optimal thermal performance.
To ensure reliable start-up, ensure that the input voltage is within the specified range, and the output capacitor is properly sized to handle the inrush current. Additionally, a soft-start circuit can be implemented to reduce the inrush current.
The maximum allowable capacitance for the output filter capacitor is 220uF. Exceeding this value may cause instability or oscillation in the converter.
While it's possible to use a different inductor value or type, it's not recommended as it may affect the converter's performance, efficiency, and stability. The recommended inductor value and type are carefully selected to ensure optimal performance.
To troubleshoot issues with the output voltage regulation, check the input voltage, output load, and feedback loop components. Ensure that the feedback resistors are properly selected and the feedback loop is properly compensated.