MP1470GJ-Z datasheet by Monolithic Power Systems

MP1470GJ-Z Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  A 2-layer or 4-layer PCB with a solid ground plane and thermal vias is recommended. Keep the component side of the PCB clear of copper to minimize thermal resistance.
• How do I ensure stability and prevent oscillations in the output voltage?
  Ensure the output capacitor has a low ESR, and the feedback network is properly compensated. A minimum of 10uF output capacitance is recommended.
• What is the maximum input voltage that can be applied to the device?
  The maximum input voltage is 28V, but it's recommended to keep it below 24V for optimal performance and reliability.
• Can I use the MP1470GJ-Z in a high-temperature environment?
  The device is rated for operation up to 125°C, but derating is required above 85°C. Ensure proper thermal design and heat sinking to maintain reliability.
• How do I calculate the output voltage ripple and noise?
  Use the formula: ΔVout = (Iout * ESR) / (fsw * Cout), where Iout is the output current, ESR is the output capacitor's equivalent series resistance, fsw is the switching frequency, and Cout is the output capacitance.