RPM-20PB - ROHM Semiconductor

RPM-20PB Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of RPM-20PB?
  ROHM recommends a 4-layer PCB with a solid ground plane and a separate power plane for the input and output stages. The input and output pins should be placed on the top layer, and the decoupling capacitors should be placed as close as possible to the device.
• How do I ensure the stability of the output voltage of RPM-20PB?
  To ensure the stability of the output voltage, it is recommended to use a minimum output capacitance of 10uF and a maximum ESR of 1 ohm. Additionally, the output voltage should be decoupled with a 10nF ceramic capacitor.
• What is the maximum input voltage that RPM-20PB can handle?
  Although the datasheet specifies a maximum input voltage of 20V, ROHM recommends limiting the input voltage to 18V to ensure reliable operation and to prevent damage to the device.
• Can I use RPM-20PB in a high-temperature environment?
  Yes, RPM-20PB is rated for operation up to 105°C. However, the device's performance and reliability may degrade at high temperatures. It is recommended to derate the output current and to ensure good thermal design to prevent overheating.
• How do I troubleshoot issues with RPM-20PB?
  To troubleshoot issues with RPM-20PB, check the input voltage, output voltage, and output current. Verify that the device is properly soldered and that the PCB layout is correct. Check for any signs of overheating, such as a high junction temperature or a malfunctioning thermal protection circuit.