TPS54040ADGQR datasheet by Texas Instruments

TPS54040ADGQR Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the TPS54040ADGQR?
  The maximum input voltage that can be applied to the TPS54040ADGQR is 42V, but it's recommended to keep it below 40V for reliable operation.
• How do I ensure the stability of the output voltage?
  To ensure the stability of the output voltage, it's essential to use a suitable output capacitor with a low equivalent series resistance (ESR) and a sufficient capacitance value. A 10uF to 22uF ceramic capacitor is recommended.
• What is the minimum input voltage required for the TPS54040ADGQR to operate?
  The minimum input voltage required for the TPS54040ADGQR to operate is 4.5V, but it's recommended to keep it above 5V for reliable operation.
• Can I use the TPS54040ADGQR in a high-temperature environment?
  The TPS54040ADGQR is rated for operation up to 125°C, but it's essential to ensure that the device is properly heatsinked and that the junction temperature is kept below 150°C to ensure reliable operation.
• How do I calculate the output voltage of the TPS54040ADGQR?
  The output voltage of the TPS54040ADGQR can be calculated using the formula: Vout = 0.8V x (1 + R2/R1), where R1 and R2 are the resistors used in the feedback network.