Texas Instruments provides a recommended PCB layout in the TPS92201ADRVR evaluation module documentation, which includes guidelines for component placement, thermal management, and routing. It's essential to follow these guidelines to ensure optimal performance and minimize electromagnetic interference (EMI).
The input capacitor selection depends on the input voltage, output voltage, and output current requirements. A general guideline is to choose a capacitor with a voltage rating of at least 1.5 times the maximum input voltage, and a capacitance value between 4.7 μF and 10 μF. Additionally, consider the capacitor's ESR (Equivalent Series Resistance) and ESL (Equivalent Series Inductance) to ensure it can handle the switching frequency and output current.
The EN (Enable) pin is an active-high input that enables or disables the TPS92201ADRVR. When EN is high, the device is enabled, and when EN is low, the device is disabled. You can use the EN pin to implement power sequencing, shutdown, or low-power modes in your system. Connect the EN pin to a logic signal or a voltage source, and ensure it meets the specified voltage and timing requirements.
To optimize output voltage accuracy and stability, ensure that the feedback resistors (RFBT and RFB) are properly selected and matched. Use 1% or better tolerance resistors, and consider the temperature coefficient of the resistors. Additionally, ensure the output capacitor is properly selected, and the output voltage sense lines are properly routed to minimize noise and interference.
The TPS92201ADRVR has a high-power density, so thermal management is crucial. Ensure good airflow around the device, and consider using a heat sink or thermal pad to dissipate heat. Follow the recommended PCB layout guidelines, and avoid placing heat-sensitive components near the device. Monitor the device's junction temperature (TJ) and ensure it stays within the specified operating range.
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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.
