AO4828 datasheet by Alpha & Omega Semiconductor

AO4828 Frequently Asked Questions (FAQs)

• What is the maximum junction temperature that the AO4828 can handle?
  The maximum junction temperature of the AO4828 is 150°C. However, it's recommended to keep the junction temperature below 125°C for reliable operation.
• How do I ensure the AO4828 is properly biased for optimal performance?
  To ensure proper biasing, make sure to provide a stable input voltage within the recommended range (4.5V to 18V), and use a suitable bootstrap capacitor (typically 1nF to 10nF) to decouple the high-side driver.
• What is the recommended PCB layout for the AO4828 to minimize electromagnetic interference (EMI)?
  To minimize EMI, use a multi-layer PCB with a solid ground plane, keep the high-current paths short and direct, and use a shielded inductor. Also, place the AO4828 close to the power stage components to reduce noise.
• Can I use the AO4828 in a synchronous buck converter configuration?
  Yes, the AO4828 can be used in a synchronous buck converter configuration. However, ensure that the low-side FET is properly driven and the dead time is set correctly to prevent shoot-through currents.
• How do I protect the AO4828 from overcurrent and overvoltage conditions?
  Implement overcurrent protection (OCP) and overvoltage protection (OVP) circuits to prevent damage to the AO4828. You can use external components such as resistors, capacitors, and zener diodes to achieve this.