L6235N datasheet by STMicroelectronics

L6235N Frequently Asked Questions (FAQs)

• What is the maximum voltage that can be applied to the L6235N?
  The maximum voltage that can be applied to the L6235N is 50V, but it's recommended to keep it below 40V for reliable operation.
• How do I choose the right sense resistor value for my application?
  The sense resistor value depends on the desired current limit and the voltage drop across the resistor. A good starting point is to use the formula Rsense = 0.5V / Ilim, where Ilim is the desired current limit.
• 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. A good starting point for choosing the value of CBOOT is 10nF to 22nF, but it may need to be adjusted based on the specific application and switching frequency.
• How do I ensure that the L6235N is properly thermally managed?
  Proper thermal management is crucial for the L6235N. Ensure good airflow, use a heat sink if necessary, and follow the thermal design guidelines in the datasheet to keep the junction temperature below 150°C.
• What is the recommended PCB layout for the L6235N?
  A good PCB layout for the L6235N should minimize the loop area of the high-current paths, keep the sense resistor close to the IC, and use a solid ground plane to reduce EMI.