Tamura recommends a 4-layer PCB with a solid ground plane and a separate layer for the output voltage. The input and output capacitors should be placed as close as possible to the IC, and the output inductor should be placed on the same layer as the output capacitor.
To ensure stability, make sure to follow the recommended component values and PCB layout. Additionally, ensure that the output capacitor has a low ESR and the output inductor has a high saturation current. Also, avoid using a capacitor with a high ESL in the output filter.
The maximum ambient temperature for reliable operation is 85°C. However, the device can operate up to 105°C with derating. It's essential to ensure proper heat sinking and thermal management to prevent overheating.
While the datasheet recommends a specific inductor value and type, you can use a different one as long as it meets the required inductance, saturation current, and DC resistance. However, be aware that this may affect the converter's performance and stability.
Check the input voltage, output voltage, and feedback voltage to ensure they are within the specified ranges. Verify that the components are correctly placed and the PCB layout follows the recommended guidelines. Also, check for any signs of overheating or damage to the IC or components.
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