A good PCB layout for optimal thermal performance involves placing the device near a thermal pad or a heat sink, and ensuring good airflow around the device. The datasheet provides some guidelines, but a more detailed application note from TI provides additional guidance.
To ensure a stable and regulated output voltage, make sure to follow the recommended component values and PCB layout guidelines in the datasheet. Additionally, ensure that the input voltage is within the recommended range, and that the output capacitor is of sufficient value and type.
While the datasheet specifies a maximum input voltage of 42V, it's recommended to derate this value by 10-15% to ensure reliable operation and to account for voltage spikes or transients.
While it's technically possible to use a different inductor value or type, it's not recommended as it may affect the device's performance, efficiency, and stability. The recommended inductor values and types are carefully selected to ensure optimal performance.
To troubleshoot issues with the device, start by verifying that the input voltage and output voltage are within the recommended ranges. Check the PCB layout and component values to ensure they match the recommended values. Use an oscilloscope to check for oscillations or instability, and consult the datasheet and application notes for guidance.
LMZ14201HTZ/NOPB datasheet
by Texas Instruments
