VAWQ3-Q24-S12H - CUI Inc.

VAWQ3-Q24-S12H Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  CUI recommends a PCB layout with a large copper area underneath the module to dissipate heat. A minimum of 1 oz copper thickness is recommended, and the use of thermal vias can further improve heat dissipation.
• How do I ensure reliable startup and shutdown of the module?
  To ensure reliable startup and shutdown, CUI recommends a soft-start circuit to limit inrush current and a shutdown circuit to prevent back-feeding of the input voltage. Additionally, a minimum input capacitance of 10uF is recommended to ensure stable operation.
• What is the maximum allowable input voltage ripple for this module?
  The maximum allowable input voltage ripple for the VAWQ3-Q24-S12H is 10% of the nominal input voltage. Exceeding this limit may affect the module's performance and reliability.
• Can I use this module in a high-temperature environment?
  While the VAWQ3-Q24-S12H is rated for operation up to 80°C, CUI recommends derating the output power by 2.5% per degree above 60°C to ensure reliable operation. Additionally, the module's reliability may be affected by prolonged exposure to high temperatures.
• What is the recommended input fuse rating for this module?
  CUI recommends a fuse rating of 2-3 times the maximum input current to ensure reliable operation and protection against input overcurrent conditions.