TPS5420DG4 datasheet by Texas Instruments

TPS5420DG4 Frequently Asked Questions (FAQs)

• What is the maximum input voltage that can be applied to the TPS5420DG4?
  The maximum input voltage that can be applied to the TPS5420DG4 is 42V, but it's recommended to keep it below 40V for reliable operation.
• How do I ensure the TPS5420DG4 is stable and doesn't oscillate?
  To ensure stability, make sure to use a minimum output capacitance of 10uF, and a maximum ESR of 1 ohm. Also, use a 1uF ceramic capacitor at the input pin to filter out noise.
• What is the minimum input voltage required for the TPS5420DG4 to operate?
  The minimum input voltage required for the TPS5420DG4 to operate is 6.5V, but it's recommended to keep it above 7V for reliable startup.
• Can I use the TPS5420DG4 in a high-temperature environment?
  The TPS5420DG4 is rated for operation up to 125°C, but it's recommended to derate the output current at high temperatures to prevent overheating.
• How do I calculate the output voltage of the TPS5420DG4?
  The output voltage of the TPS5420DG4 can be calculated using the formula: Vout = (R1 / R2) * (1.225V), where R1 and R2 are the resistors connected to the FB pin.