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, using a solid ground plane, and minimizing trace lengths and widths.
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.
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, it's recommended to derate the device's power dissipation at higher ambient temperatures to ensure reliable operation.
The TPS61071DDCRG4 is a surface-mount device, and its reliability in high-vibration environments depends on the PCB design, component selection, and assembly quality. It's recommended to follow good design practices for vibration-resistant PCB design, such as using a rigid PCB, securing components with adhesives or mechanical fasteners, and using vibration-resistant capacitors.
Start by checking the PCB layout and component selection against the datasheet recommendations. Verify that the input voltage, output voltage, and load current are within the specified ranges. Use an oscilloscope to check for voltage ripple, noise, or oscillations. Check for thermal issues by measuring the device's temperature and ensuring proper heat sinking. Consult the datasheet and application notes for troubleshooting guides and FAQs.
TPS61071DDCRG4 datasheet
by Texas Instruments
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