L6566BTR datasheet by STMicroelectronics

L6566BTR Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the L6566BTR can handle?
  The L6566BTR can handle a maximum input voltage of 30V, but it's recommended to keep it below 28V for reliable operation.
• How do I choose the right inductor value for my application?
  The inductor value depends on the output voltage, output current, and switching frequency. A good starting point is to use the inductor value calculation formula provided in the datasheet, and then adjust based on the specific application requirements.
• What is the purpose of the bootstrap capacitor (CBOOT) and how do I choose its value?
  The bootstrap capacitor (CBOOT) is used to generate the high-side gate drive voltage. The recommended value is 10nF to 22nF, but it may need to be adjusted based on the specific application requirements and the value of the high-side MOSFET.
• How do I ensure the L6566BTR is stable and doesn't oscillate?
  To ensure stability, make sure to follow the layout guidelines in the datasheet, use a low-ESR output capacitor, and add a small ceramic capacitor (e.g., 10nF) between the VCC pin and GND. Additionally, adjust the compensation components (R1, R2, C1, and C2) according to the application requirements.
• What is the maximum output current that the L6566BTR can deliver?
  The L6566BTR can deliver up to 3A of output current, but the actual current limit depends on the input voltage, output voltage, and thermal conditions. Make sure to check the thermal derating curves in the datasheet to ensure reliable operation.