Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general high-frequency layout guidelines, 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 input and output capacitors depends on the specific application requirements, such as ripple current, voltage rating, and ESR. TI recommends using low-ESR ceramic capacitors with a voltage rating of at least 1.5 times the input voltage. A good starting point is to use 10uF capacitors for both input and output.
While the datasheet specifies an operating temperature range of -40°C to 125°C, the maximum ambient temperature for reliable operation depends on the specific application and cooling conditions. As a general rule, it's recommended to keep the ambient temperature below 85°C to ensure reliable operation and minimize thermal stress.
To ensure stability and prevent oscillations, it's essential to follow the recommended PCB layout, choose the right input and output capacitors, and ensure that the output voltage is properly decoupled. Additionally, the datasheet provides a stability analysis section that can help designers identify potential stability issues.
While the datasheet specifies an input voltage range of 2.5V to 6V, the recommended input voltage range for optimal performance is typically between 3V and 5.5V. Operating outside this range may affect the converter's efficiency, stability, and reliability.
TPS62043DRCR datasheet
by Texas Instruments
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