NPH15S2403IC datasheet by Murata Power Solutions

NPH15S2403IC Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  Murata 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 converter under all operating conditions?
  To ensure reliable start-up, ensure that the input voltage is within the specified range, and the output capacitor is properly sized to handle the inrush current. Additionally, a soft-start circuit can be implemented to reduce the inrush current.
• What is the maximum allowable capacitance for the output capacitor?
  The maximum allowable capacitance for the output capacitor is 220uF. Exceeding this value may cause instability or oscillation in the converter.
• Can I use a different inductor value than the recommended one?
  While it is possible to use a different inductor value, it is not recommended as it may affect the converter's performance, efficiency, and stability. The recommended inductor value is optimized for the specific converter design.
• How do I troubleshoot issues with the converter, such as oscillation or instability?
  To troubleshoot issues, check the input voltage, output voltage, and current waveforms using an oscilloscope. Verify that the component values, including the inductor and capacitors, are within the recommended specifications. Also, ensure that the PCB layout is correct and the thermal design is adequate.