FGH75T65SQDT-F155 - onsemi

FGH75T65SQDT-F155 Frequently Asked Questions (FAQs)

• What is the recommended gate resistor value for this IGBT?
  The recommended gate resistor value is typically between 10Ω to 100Ω, depending on the specific application and switching frequency. A higher value can reduce EMI, but may slow down the switching speed.
• How do I ensure the IGBT is properly cooled in my design?
  Ensure good thermal contact between the IGBT and the heat sink. Apply a thin layer of thermal interface material, and secure the IGBT to the heat sink using screws or a clip. Also, consider the airflow and heat sink design to maximize heat dissipation.
• What is the maximum allowed voltage imbalance between the collector and emitter?
  The maximum allowed voltage imbalance is typically ±10% of the rated voltage (650V). Exceeding this limit can lead to uneven stress and reduced lifespan.
• Can I use this IGBT in a resonant converter topology?
  Yes, the FGH75T65SQDT-F155 can be used in resonant converter topologies, but ensure the design considers the IGBT's switching characteristics, and the resonant circuit is properly tuned to minimize losses and ensure reliable operation.
• How do I protect the IGBT from overcurrent and overvoltage conditions?
  Implement overcurrent protection using a current sense resistor and a comparator or a dedicated overcurrent protection IC. For overvoltage protection, consider using a voltage clamp or a transient voltage suppressor (TVS) diode.