TPS51100DGQ datasheet by Texas Instruments

TPS51100DGQ Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the TPS51100DGQ to ensure optimal performance?
  A good PCB layout for the TPS51100DGQ should include a solid ground plane, separate analog and digital grounds, and a decoupling capacitor (e.g., 10uF) between VIN and GND. Additionally, the input and output capacitors should be placed close to the device, and the feedback resistors should be placed close to the FB pin.
• How do I choose the right output capacitor for the TPS51100DGQ?
  The output capacitor should be chosen based on the desired output voltage ripple, output current, and operating frequency. A general guideline is to use a capacitor with a capacitance value of at least 10uF and a voltage rating of at least 1.5 times the output voltage. X5R or X7R ceramic capacitors are recommended for their low ESR and high reliability.
• What is the maximum input voltage that the TPS51100DGQ can handle?
  The TPS51100DGQ can handle input voltages up to 18V, but it's recommended to keep the input voltage below 15V to ensure reliable operation and to prevent overheating.
• How do I adjust the output voltage of the TPS51100DGQ?
  The output voltage of the TPS51100DGQ can be adjusted by changing the ratio of the feedback resistors (RFBT and RFBG). The output voltage can be calculated using the formula: VOUT = 0.8V x (1 + RFBT/RFBG).
• What is the minimum input voltage required for the TPS51100DGQ to operate?
  The TPS51100DGQ requires a minimum input voltage of 2.7V to operate, but it's recommended to keep the input voltage above 3.3V for reliable operation.