RLS-397 - RECOM Power

RLS-397 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  RECOM recommends a 2-layer PCB with a solid ground plane on the bottom layer and a thermal relief pattern on the top layer to ensure optimal thermal performance.
• How do I ensure reliable start-up of the RLS-397 in low-input-voltage applications?
  To ensure reliable start-up, RECOM recommends using a soft-start circuit or a voltage supervisor to ensure the input voltage is above the minimum required voltage (Vin(min)) before enabling the converter.
• What is the maximum allowed capacitance for the output filter capacitor?
  The maximum allowed capacitance for the output filter capacitor is 47uF. Exceeding this value may cause instability or oscillation in the converter.
• Can I use the RLS-397 in a high-temperature environment?
  While the RLS-397 is rated for operation up to 85°C, RECOM recommends derating the output power by 1.5% per degree above 70°C to ensure reliable operation in high-temperature environments.
• How do I troubleshoot output voltage deviations or oscillations?
  To troubleshoot output voltage deviations or oscillations, check the input voltage, output load, and PCB layout for any anomalies. Ensure the output capacitor is within the recommended range and the input filter is properly designed.