TPS2815D datasheet by Texas Instruments

TPS2815D Frequently Asked Questions (FAQs)

• What is the maximum voltage rating for the input capacitor?
  The maximum voltage rating for the input capacitor is 50V, but it's recommended to use a capacitor with a voltage rating of at least 1.5 times the maximum input voltage to ensure reliable operation.
• How do I ensure the TPS2815D is stable and doesn't oscillate?
  To ensure stability, make sure to follow the recommended PCB layout guidelines, use a low-ESR output capacitor, and add a small ceramic capacitor (e.g., 10nF) between the VCC pin and GND. Additionally, avoid using long traces and minimize the area of the power loop.
• What is the minimum input voltage required for the TPS2815D to operate?
  The minimum input voltage required for the TPS2815D to operate is 2.5V, but it's recommended to use an input voltage of at least 3V to ensure reliable startup and operation.
• Can I use the TPS2815D in a high-temperature environment?
  The TPS2815D is rated for operation up to 125°C, but it's recommended to derate the output current and input voltage as the temperature increases to ensure reliable operation. Consult the datasheet for specific derating guidelines.
• How do I calculate the output voltage of the TPS2815D?
  The output voltage of the TPS2815D is set by the resistive divider network connected to the FB pin. Use the formula: VOUT = 0.8V x (R1 + R2) / R2, where R1 and R2 are the resistors in the divider network.