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.
The choice of inductor depends on the specific requirements of your application, including the output voltage, current, and frequency. Texas Instruments provides a list of recommended inductors in the datasheet, but you may also need to consider factors such as inductor size, core material, and DC resistance.
The TPS62221DDCR is rated for operation from -40°C to 125°C, but the maximum ambient temperature range may be limited by the specific application and the components used. It's important to consider the thermal characteristics of the IC and the overall system design.
To ensure stability, follow the recommended component values and PCB layout in the datasheet, and make sure to use a sufficient output capacitor with a low equivalent series resistance (ESR). Additionally, consider adding a small ceramic capacitor (e.g. 10nF) between the VOUT and GND pins to help filter out high-frequency noise.
Yes, the TPS62221DDCR is qualified for automotive and high-reliability applications, and meets the requirements of the AEC-Q100 standard. However, it's important to follow the specific requirements and guidelines for your application, and to consult with Texas Instruments or a qualified engineer if you have any doubts.
TPS62221DDCR datasheet
by Texas Instruments
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