PD85025-E datasheet by STMicroelectronics

PD85025-E Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the PD85025-E?
  A good PCB layout for the PD85025-E involves keeping the input and output tracks separate, using a solid ground plane, and minimizing the length of the input tracks. It's also recommended to use a common mode filter at the input to reduce EMI.
• How do I ensure the PD85025-E is properly powered and what are the power sequencing requirements?
  The PD85025-E requires a single 5V power supply. It's recommended to use a low-dropout linear regulator or a switching regulator with a low output voltage ripple. Power sequencing is not critical, but it's recommended to power up the VCC pin before the VIN pin.
• What is the maximum cable length supported by the PD85025-E?
  The PD85025-E supports cable lengths up to 3 meters, but this can be extended up to 5 meters with the use of active cables or repeaters.
• How do I troubleshoot issues with the PD85025-E, such as no output or incorrect output voltage?
  To troubleshoot issues with the PD85025-E, first check the input voltage and ensure it's within the recommended range. Then, check the output voltage and current to ensure they're within the specified limits. If the issue persists, check the PCB layout and ensure it's following the recommended layout guidelines.
• Can the PD85025-E be used in a redundant or hot-swappable power supply configuration?
  Yes, the PD85025-E can be used in a redundant or hot-swappable power supply configuration. However, it's recommended to use an external ORing diode or an ideal diode controller to ensure proper operation and to prevent back-feeding of power.