IR4428STR datasheet by International Rectifier

IR4428STR Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the IR4428STR?
  The maximum operating frequency of the IR4428STR is typically around 500 kHz, but it can be operated up to 1 MHz with proper design and layout considerations.
• How do I ensure proper thermal management of the IR4428STR?
  Proper thermal management of the IR4428STR involves providing a good thermal path from the device to a heat sink or the PCB, using thermal interface materials, and ensuring good airflow around the device.
• 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 to prevent shoot-through currents and ensure reliable operation.
• Can I use the IR4428STR in a synchronous buck converter design?
  Yes, the IR4428STR can be used in a synchronous buck converter design, but it requires careful design and layout considerations to ensure proper operation and minimize losses.
• How do I protect the IR4428STR from overvoltage and undervoltage conditions?
  The IR4428STR can be protected from overvoltage and undervoltage conditions using external voltage monitoring and protection circuits, such as overvoltage protection (OVP) and undervoltage lockout (UVLO) circuits.