RPM6938 - ROHM Semiconductor

RPM6938 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  ROHM recommends a 4-layer PCB with a thermal relief pattern on the bottom layer to improve heat dissipation. A minimum of 2 oz copper thickness is recommended for the top and bottom layers.
• How do I ensure stable output voltage regulation with RPM6938?
  To ensure stable output voltage regulation, it's essential to follow the recommended component values and PCB layout guidelines. Additionally, ensure that the input voltage is within the recommended range, and the output capacitor is of high quality with low ESR.
• What is the maximum ambient temperature for reliable operation?
  The maximum ambient temperature for reliable operation of RPM6938 is 85°C. However, it's recommended to derate the device's power dissipation to ensure reliable operation at higher temperatures.
• Can I use RPM6938 in a high-vibration environment?
  Yes, RPM6938 is designed to withstand high-vibration environments. However, it's essential to follow proper PCB mounting and screwing guidelines to ensure the device remains securely attached to the PCB.
• How do I troubleshoot output voltage instability or oscillation issues?
  To troubleshoot output voltage instability or oscillation issues, check the PCB layout for any signs of noise coupling or resonance. Ensure that the output capacitor is of high quality and the input voltage is within the recommended range. Also, verify that the device is properly soldered and there are no cold joints.