Texas Instruments 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. A minimum of 2 oz copper thickness is recommended.
To ensure reliable operation at high temperatures, it's essential to follow the recommended thermal design guidelines, including proper heat sinking, thermal interface material selection, and adequate airflow. Additionally, derating the device's power dissipation according to the temperature derating curve is crucial.
The maximum allowed voltage on the input pins is 6V, which is the absolute maximum rating. However, for reliable operation, it's recommended to keep the input voltage within the recommended operating range of 3.3V to 5.5V.
While the TPPM0115DR is not specifically designed for high-humidity environments, it can still be used in such conditions with proper precautions. Ensure the device is properly sealed, and consider using conformal coating or potting to protect it from moisture.
To troubleshoot issues with the output voltage regulation, check the input voltage, output load, and PCB layout for any anomalies. Verify that the device is properly configured, and the output capacitor is within the recommended range. If issues persist, consult the datasheet's troubleshooting section or contact Texas Instruments' support team.
TPPM0115DR datasheet
by Texas Instruments
