PQMC3-D24-S3-S - CUI Inc.

PQMC3-D24-S3-S Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  CUI recommends a 4-layer PCB with a solid ground plane, and to keep the input and output traces separate to minimize noise and EMI. A recommended layout is available upon request from CUI's technical support team.
• How do I ensure the module's reliability in high-temperature environments?
  CUI recommends following the derating guidelines in the datasheet, ensuring good airflow around the module, and using a thermal interface material (TIM) between the module and the heatsink. Additionally, consider using a conformal coating to protect the module from moisture and contamination.
• What is the maximum capacitance I can use on the output?
  CUI recommends limiting the output capacitance to 10uF or less to ensure stability and prevent oscillations. Exceeding this value may lead to reduced performance, instability, or even damage to the module.
• Can I use this module in a redundant or parallel configuration?
  Yes, the PQMC3-D24-S3-S can be used in redundant or parallel configurations, but it's essential to follow CUI's guidelines for synchronization and current sharing to ensure reliable operation and prevent damage to the modules.
• What is the typical MTBF (Mean Time Between Failures) for this module?
  CUI provides an MTBF rating of 1.5 million hours at 25°C, calculated according to MIL-HDBK-217F. However, this value may vary depending on the specific application, operating conditions, and environmental factors.