IRS2301SPBF datasheet by International Rectifier

IRS2301SPBF Frequently Asked Questions (FAQs)

• What is the maximum operating frequency of the IRS2301SPBF?
  The maximum operating frequency of the IRS2301SPBF is 1 MHz, but it can be used up to 2 MHz with some derating of the output current.
• How do I calculate the minimum input voltage required for the IRS2301SPBF?
  The minimum input voltage required for the IRS2301SPBF is VCC + Vf (forward voltage drop of the bootstrap diode) + Vsat (saturation voltage of the high-side FET). Typically, this is around 12-15V.
• What is the purpose of the bootstrap capacitor (CBOOT) in the IRS2301SPBF?
  The bootstrap capacitor (CBOOT) is used to generate the high-side gate drive voltage for the FET. It is charged through the bootstrap diode (DBOOT) when the low-side FET is on.
• How do I choose the correct value for the bootstrap capacitor (CBOOT)?
  The value of the bootstrap capacitor (CBOOT) depends on the operating frequency, output current, and high-side FET gate charge. A typical value is around 10-22nF.
• What is the maximum output current that the IRS2301SPBF can handle?
  The maximum output current that the IRS2301SPBF can handle is 1.5A, but this depends on the application and the thermal design of the system.