VHB350-D48-S28 - CUI Inc.

VHB350-D48-S28 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout and thermal management for optimal performance?
  CUI recommends a PCB layout with a solid ground plane and thermal vias to dissipate heat. A minimum of 2 oz copper thickness is recommended. Additionally, a thermal interface material (TIM) with a thermal conductivity of 1 W/m-K or higher is suggested to improve heat transfer between the module and the heat sink.
• 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 voltage spikes. Additionally, a minimum input capacitance of 10 uF is recommended to filter out noise and ensure stable operation.
• What is the maximum allowable output capacitance for this module?
  The maximum allowable output capacitance for the VHB350-D48-S28 is 220 uF. Exceeding this value may cause instability or oscillation in the output voltage.
• Can I use this module in a high-vibration environment?
  Yes, the VHB350-D48-S28 is designed to meet the vibration requirements of IEC 60068-2-6. However, it's recommended to follow proper mounting and screw torque procedures to ensure reliable operation in high-vibration environments.
• What is the typical efficiency of this module at different loads?
  The typical efficiency of the VHB350-D48-S28 is around 92% at 50% load, 90% at 25% load, and 88% at 10% load. However, actual efficiency may vary depending on the specific application and operating conditions.