IR4427SPBF datasheet by International Rectifier

IR4427SPBF Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the IR4427SPBF?
  The maximum operating frequency of the IR4427SPBF is 500 kHz, but it can be operated at higher frequencies with proper design and layout considerations.
• How do I ensure the bootstrap capacitor is properly charged?
  To ensure the bootstrap capacitor is properly charged, make sure the high-side FET is turned off before the low-side FET is turned on, and the bootstrap capacitor should be sized appropriately based on the application's requirements.
• What is the recommended dead time between the high-side and low-side FETs?
  The recommended dead time between the high-side and low-side FETs is typically around 100-200 ns, but this can vary depending on the specific application and layout.
• How do I protect the IR4427SPBF from overvoltage and undervoltage conditions?
  To protect the IR4427SPBF from overvoltage and undervoltage conditions, use a voltage regulator or a voltage supervisor to ensure the input voltage is within the recommended operating range, and consider adding overvoltage protection (OVP) and undervoltage protection (UVP) circuits.
• What is the maximum allowable power dissipation of the IR4427SPBF?
  The maximum allowable power dissipation of the IR4427SPBF is dependent on the thermal design and layout of the application, but a general guideline is to keep the junction temperature below 150°C.