VSBU-120-D305 - CUI Inc.

VSBU-120-D305 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  CUI recommends a PCB layout that provides a thermal pad with a minimum size of 10mm x 10mm, and a minimum of 2 oz copper thickness. Additionally, a thermal via array with a minimum of 10 vias, 0.3mm in diameter, spaced 1.5mm apart, can help to further reduce thermal resistance.
• How do I ensure reliable operation in high-vibration environments?
  CUI recommends following the recommended PCB mounting and screw torque specifications to ensure reliable operation in high-vibration environments. Additionally, consider using a vibration-dampening material, such as a silicone-based adhesive, between the module and the PCB.
• What is the maximum allowable capacitance for the input filter?
  CUI recommends a maximum allowable capacitance of 10uF for the input filter to ensure stable operation. Exceeding this value may lead to instability or oscillation.
• Can I use a different output capacitor value than recommended?
  While it's possible to use a different output capacitor value, CUI recommends following the recommended output capacitor value to ensure optimal performance and stability. Deviating from the recommended value may affect the module's performance, efficiency, and stability.
• What is the recommended input voltage derating for high-reliability applications?
  CUI recommends derating the input voltage by 10% to ensure high reliability in critical applications. For example, if the maximum rated input voltage is 12V, the recommended derated input voltage would be 10.8V.