STGWA35IH135DF2 - STMicroelectronics

STGWA35IH135DF2 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  STMicroelectronics provides a recommended PCB layout in the application note AN5046, which includes guidelines for thermal vias, copper pours, and component placement to ensure optimal thermal performance.
• How do I select the correct gate driver for this IGBT?
  The selection of a gate driver depends on the specific application requirements. STMicroelectronics recommends using a gate driver with a high current capability, such as the STGWPC20HD, and ensuring that it is compatible with the IGBT's gate-emitter voltage and current ratings.
• What is the maximum allowed voltage overshoot during turn-on and turn-off?
  The maximum allowed voltage overshoot during turn-on and turn-off is typically limited to 10-15% of the DC bus voltage. Exceeding this limit can lead to reduced reliability and lifespan of the IGBT. It's essential to ensure that the gate driver and snubber circuit are designed to minimize voltage overshoot.
• How do I protect the IGBT from overcurrent and short-circuit faults?
  STMicroelectronics recommends using a combination of overcurrent detection, desaturation detection, and short-circuit protection to ensure the IGBT is protected from faults. The STGWPC20HD gate driver, for example, has built-in overcurrent and desaturation detection features.
• What is the recommended cooling system for high-power applications?
  For high-power applications, a forced-air cooling system or a liquid cooling system is recommended to ensure the IGBT operates within its safe operating temperature range. The cooling system should be designed to maintain a junction temperature below 125°C.