PQS075-S12-S15-S - CUI Inc.

PQS075-S12-S15-S Frequently Asked Questions (FAQs)

• What is the recommended PCB layout and thermal management for optimal performance?
  CUI Inc recommends a PCB layout with a large copper area for heat dissipation, and a thermal management system with a heat sink and thermal interface material to keep the operating temperature below 125°C.
• How do I ensure reliable startup and shutdown of the power supply?
  To ensure reliable startup and shutdown, CUI Inc recommends a soft-start circuit to limit inrush current, and a shutdown circuit with a voltage supervisor to prevent voltage overshoot.
• What are the EMI filtering requirements for this power supply?
  The PQS075-S12-S15-S meets CISPR 22 Class B EMI standards, but additional filtering may be required depending on the specific application and environment. CUI Inc recommends consulting with their technical support team for customized EMI filtering solutions.
• Can I use this power supply in a high-altitude or high-temperature environment?
  The PQS075-S12-S15-S is rated for operation up to 5,000 meters (16,400 ft) and 80°C ambient temperature. For higher altitudes or temperatures, derating may be necessary. Consult with CUI Inc's technical support team for specific guidance.
• What is the MTBF (Mean Time Between Failures) rating for this power supply?
  The MTBF rating for the PQS075-S12-S15-S is approximately 550,000 hours at 25°C, calculated according to MIL-HDBK-217F.