MP2380DN-LF-Z datasheet by Monolithic Power Systems

MP2380DN-LF-Z Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance?
  A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output capacitors close to the IC, and use short, wide traces for the power paths.
• How do I ensure stability and prevent oscillations?
  Ensure that the output capacitor has a low ESR, and the input capacitor has a high capacitance. Also, keep the feedback loop components close to the IC and use a low-impedance feedback path.
• What is the maximum input voltage that can be applied to the IC?
  The maximum input voltage is 28V, but it's recommended to keep it below 24V for optimal performance and reliability.
• Can I use a ceramic capacitor for the output filter?
  Yes, but ensure that the ceramic capacitor has a low ESR and is rated for the output voltage. Also, consider the capacitor's temperature coefficient and aging characteristics.
• How do I calculate the output voltage ripple?
  The output voltage ripple can be calculated using the formula: ΔVout = (Iout * ESL) / (Cout * fsw), where ESL is the equivalent series inductance of the output capacitor, Cout is the output capacitance, and fsw is the switching frequency.