QA04 - Mornsun Power

QA04 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  MORNSUN recommends a PCB layout with a large copper area connected to the GND pin to dissipate heat. A minimum of 1 oz copper thickness is recommended. Additionally, keeping the PCB layer as close as possible to the QA04's thermal pad can improve thermal performance.
• How do I ensure the QA04's output voltage is stable and accurate?
  To ensure stable and accurate output voltage, it's essential to decouple the input and output with suitable capacitors (e.g., 10uF ceramic capacitors). Additionally, keeping the input voltage within the recommended range and minimizing noise on the input line can help maintain output voltage stability.
• What is the maximum capacitive load that the QA04 can drive?
  The QA04 can drive a maximum capacitive load of 10uF. Exceeding this value may cause instability or oscillation. If a larger capacitive load is required, consider adding a series resistor or using a different DC-DC converter model.
• How do I protect the QA04 from input voltage surges or spikes?
  To protect the QA04 from input voltage surges or spikes, consider adding a TVS (Transient Voltage Suppressor) diode or a varistor in parallel with the input capacitor. This can help absorb or clamp voltage transients and prevent damage to the QA04.
• What is the QA04's behavior during input voltage brownout or dropout?
  During an input voltage brownout or dropout, the QA04's output voltage will decrease or shut down to prevent damage. Once the input voltage recovers, the QA04 will automatically restart and resume normal operation.