PQS075-S5-S5-S - CUI Inc.

PQS075-S5-S5-S 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 1 oz copper thickness is recommended. Additionally, a thermal interface material (TIM) with a thermal conductivity of 1 W/m-K or higher is suggested between the module and the heat sink.
• How do I ensure reliable start-up and shutdown of the module?
  To ensure reliable start-up 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 ensure stable operation.
• What is the maximum allowable output capacitance for this module?
  The maximum allowable output capacitance for the PQS075-S5-S5-S is 220 uF. Exceeding this value may cause instability or oscillation in the output voltage.
• Can I use this module in a high-vibration or high-shock environment?
  While the PQS075-S5-S5-S is designed to meet standard industrial vibration and shock requirements, CUI recommends additional mechanical support and fixation for high-vibration or high-shock environments. Consult with CUI's application engineers for customized solutions.
• How do I monitor and control the module's temperature?
  The PQS075-S5-S5-S has a built-in temperature monitoring pin (VTM) that can be connected to a temperature monitoring circuit or a microcontroller. CUI recommends using a thermistor or thermocouple to monitor the module's temperature and implement over-temperature protection (OTP) if necessary.