Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general best practices for switching regulator layout, such as keeping the input and output capacitors close to the IC, using a solid ground plane, and minimizing trace lengths and widths to reduce EMI.
The datasheet provides a list of recommended inductors, but you can also use the following guidelines: choose an inductor with a high saturation current rating, low DC resistance, and a suitable inductance value (typically between 1-10uH). You can also use online inductor selection tools or consult with the inductor manufacturer for specific recommendations.
The datasheet specifies an operating junction temperature range of -40°C to 125°C, but the maximum ambient temperature range depends on the specific application and cooling conditions. As a general rule, you should derate the device's power dissipation according to the ambient temperature to ensure reliable operation.
Yes, the TPS65101PWP is qualified for automotive and high-reliability applications, but you should ensure that the device meets the specific requirements of your application, such as AEC-Q100 qualification, and follow the recommended design and testing guidelines for high-reliability systems.
Start by checking the basic design parameters, such as input voltage, output voltage, and component values. Use an oscilloscope to monitor the output voltage and current, and check for signs of oscillation or instability. Consult the datasheet and application notes for troubleshooting guidelines, and consider using simulation tools or seeking support from Texas Instruments or a qualified engineer.
TPS65101PWP datasheet
by Texas Instruments
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