IR2301 - Infineon

IR2301 Frequently Asked Questions (FAQs)

• What is the maximum voltage rating of the bootstrap capacitor?
  The maximum voltage rating of the bootstrap capacitor is typically 25V to 30V, but it's recommended to check the capacitor datasheet for the specific voltage rating.
• How do I calculate the minimum bootstrap capacitor value?
  The minimum bootstrap capacitor value can be calculated using the formula: CBOOT ≥ (VCC × IBOOT) / (fSW × VBOOT), where VCC is the input voltage, IBOOT is the bootstrap current, fSW is the switching frequency, and VBOOT is the bootstrap voltage.
• What is the purpose of the VCC pin, and how should it be connected?
  The VCC pin is the power supply pin for the internal logic and gate driver. It should be connected to a stable voltage source, typically 5V or 3.3V, through a decoupling capacitor to ensure proper operation.
• How do I ensure proper dead-time control between the high-side and low-side FETs?
  Proper dead-time control can be ensured by adjusting the dead-time setting (typically through an external resistor) to ensure that the high-side and low-side FETs are not turned on simultaneously, which can cause shoot-through currents.
• What is the recommended layout and placement for the IR2301 and its associated components?
  The recommended layout and placement for the IR2301 and its associated components include keeping the high-frequency switching nodes (e.g., drain-source voltage) away from sensitive analog nodes, using a solid ground plane, and placing the bootstrap capacitor close to the IR2301.