AON7760 datasheet by Alpha & Omega Semiconductor

AON7760 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  AON7760 has a exposed thermal pad on the bottom of the package, so it's recommended to have a solid copper plane on the PCB to dissipate heat. Additionally, using thermal vias to connect the top and bottom layers can further improve thermal performance.
• How do I ensure the device is properly biased during startup?
  The AON7760 has an internal voltage regulator that requires a minimum input voltage of 5.5V to function properly. Ensure that the input voltage is within the recommended range and that the device is properly decoupled with capacitors to prevent voltage droop during startup.
• What is the maximum current rating for the internal MOSFETs?
  The internal MOSFETs in the AON7760 are rated for a maximum current of 30A. However, the actual current handling capability may be limited by the PCB layout, thermal design, and other system-level factors.
• How do I troubleshoot over-temperature shutdown issues?
  Check the thermal design and ensure that the device is properly cooled. Verify that the thermal pad is connected to a solid copper plane on the PCB and that thermal vias are used to connect the top and bottom layers. Also, check for any thermal interface material (TIM) issues or poor thermal conductivity in the system.
• What is the recommended input capacitor value and type for the AON7760?
  AON7760 recommends using a 10uF to 22uF ceramic capacitor with an X7R or X5R dielectric as the input capacitor. This helps to filter out high-frequency noise and ensure stable operation.