Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general high-frequency PCB design guidelines, such as keeping the input and output traces short and away from each other, using a solid ground plane, and minimizing vias and thermal reliefs.
The TPS22904YFPT has a thermal pad on the bottom of the package, which should be connected to a solid ground plane on the PCB to dissipate heat. Additionally, ensure good airflow around the device, and consider using a heat sink or thermal interface material if the device will be operating in a high-temperature environment.
The recommended input capacitor value is 10uF to 22uF, and a low-ESR ceramic capacitor (such as X5R or X7R) is recommended. The input capacitor should be placed as close to the VIN pin as possible to minimize noise and ripple.
Yes, the TPS22904YFPT is AEC-Q100 qualified and suitable for use in automotive and high-reliability applications. However, it's essential to follow proper design and manufacturing guidelines to ensure the device meets the required reliability and quality standards.
Start by checking the input voltage, output voltage, and current draw to ensure they are within the recommended specifications. Verify that the PCB layout and component selection meet the recommended guidelines. Use an oscilloscope to check for noise and ripple on the input and output lines. If issues persist, consult the Texas Instruments support resources or contact a technical support engineer for further assistance.
TPS22904YFPT datasheet
by Texas Instruments
