Texas Instruments provides a recommended PCB layout in the datasheet, but it's essential to follow good PCB design practices, such as keeping the input and output traces short, using a solid ground plane, and minimizing noise coupling. Additionally, it's recommended to use a 4-layer PCB with a dedicated power plane and a dedicated ground plane.
To ensure stability, it's crucial to follow the recommended component values and PCB layout. Additionally, make sure to decouple the input and output with suitable capacitors, and use a low-ESR output capacitor. It's also recommended to add a small resistor (e.g., 10 ohms) in series with the output capacitor to prevent oscillations.
Although the datasheet specifies a maximum input voltage of 15V, it's recommended to limit the input voltage to 12V to ensure reliable operation and prevent damage to the device.
The output voltage ripple and noise can be calculated using the equations provided in the datasheet. However, it's essential to consider the output capacitor's ESR, the inductor's DCR, and the switching frequency when calculating the output voltage ripple and noise.
The recommended input capacitor value is 10uF to 22uF, and it's recommended to use a low-ESR ceramic capacitor (e.g., X5R or X7R) to minimize input voltage ripple and noise.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.
