Texas Instruments provides a recommended PCB layout and thermal management guide in their application notes (SLUUAC7) and layout files (XLMG2100R044RARR.tbrd) available on their website. It's essential to follow these guidelines to ensure optimal performance, thermal dissipation, and reduced electromagnetic interference (EMI).
The inductor value selection depends on the output voltage, output current, and switching frequency. Texas Instruments provides an inductor selection guide in their datasheet (SLVSDE7) and a web-based inductor selection tool. It's recommended to use the tool or consult with a TI representative for optimal inductor selection.
The XLMG2100R044RARR is rated for operation up to 105°C ambient temperature. However, it's essential to consider the thermal derating and ensure the device's junction temperature (TJ) does not exceed 125°C. Proper thermal management and heat sinking are crucial for reliable operation.
To ensure EMC compliance, follow the recommended PCB layout and thermal management guidelines, use a shielded inductor, and implement proper filtering and decoupling. Additionally, consult the TI application notes (SLUUAC7) and the relevant EMC standards (e.g., CISPR 22, EN 55022) for guidance.
Texas Instruments recommends using a low-ESR ceramic capacitor (X5R or X7R dielectric) with a value between 4.7 μF and 10 μF. The input capacitor should be placed close to the VIN pin and have a low inductance path to the device.
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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.
