Texas Instruments provides a recommended PCB layout in the datasheet, but it's also recommended to follow general guidelines for switching regulator layout, such as keeping the input and output capacitors close to the IC, and using a solid ground plane to reduce noise and EMI.
The datasheet provides a list of recommended inductors, but you can also use the inductor selection guide provided by Texas Instruments. Consider factors such as inductance value, DC resistance, and saturation current when selecting an inductor.
The datasheet specifies an operating junction temperature range of -40°C to 125°C, but the maximum ambient temperature depends on the specific application and cooling conditions. A general rule of thumb is to derate the device by 1°C/W above 25°C ambient temperature.
Yes, the TPS80032A2D7YFFR is qualified for automotive and high-reliability applications, but you should consult the datasheet and relevant standards (e.g. AEC-Q100) to ensure that the device meets the specific requirements of your application.
Start by checking the PCB layout and component selection, then use a scope to measure the input and output voltages, and the switch node voltage. Consult the datasheet and application notes for troubleshooting guidelines and common pitfalls to avoid.