SJ1-3545N - Same Sky

SJ1-3545N Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  CUI Devices recommends a PCB layout with a solid ground plane, minimal trace lengths, and a decoupling capacitor (e.g., 10nF) between the input and output pins to reduce noise and ensure stable operation.
• How do I ensure reliable start-up and shutdown of the converter?
  To ensure reliable start-up and shutdown, CUI Devices recommends a soft-start circuit or a ramp-up/ramp-down control signal to prevent inrush currents and voltage spikes. Additionally, a minimum input voltage of 2.5V is recommended for reliable start-up.
• What is the maximum allowable capacitance on the output?
  The maximum allowable capacitance on the output is 10uF. Exceeding this value may cause instability or oscillations in the converter. It's essential to follow the recommended output capacitance value to ensure stable operation.
• Can I use the SJ1-3545N in a high-temperature environment?
  While the SJ1-3545N is rated for operation up to 85°C, CUI Devices recommends derating the output power by 1.5% per degree above 60°C to ensure reliable operation. Additionally, the device should be mounted on a heat sink or PCB with good thermal conductivity to dissipate heat effectively.
• How do I troubleshoot issues with the converter's output voltage?
  To troubleshoot output voltage issues, check the input voltage, output load, and PCB layout. Ensure the input voltage is within the recommended range, the output load is within the specified current rating, and the PCB layout follows the recommended guidelines. Also, verify that the output voltage sense pins are properly connected and not loaded excessively.