L6563STR datasheet by STMicroelectronics

L6563STR Frequently Asked Questions (FAQs)

• What is the maximum input voltage that the L6563STR can handle?
  The L6563STR can handle input voltages up to 30V, but it's recommended to keep it below 25V 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 L6563STR 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, ensure that the input voltage is within the recommended range and the output voltage is within the specified tolerance.
• Can I use the L6563STR in a synchronous rectification configuration?
  Yes, the L6563STR can be used in a synchronous rectification configuration. However, it requires additional external components and careful design to ensure proper operation. Consult the datasheet and application notes for more information.