MAX3748AETE datasheet by Maxim Integrated Products

MAX3748AETE Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for the MAX3748AETE to minimize EMI?
  A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the input and output traces short and away from each other to minimize coupling. Use a common-mode choke and a shielded inductor to reduce EMI.
• How do I optimize the compensation network for the MAX3748AETE?
  Use the recommended component values in the datasheet as a starting point. Then, adjust the compensation network based on the specific application requirements and the output voltage ripple. A smaller compensation capacitor value can improve transient response, while a larger value can improve stability.
• What is the maximum input voltage that the MAX3748AETE can handle?
  The MAX3748AETE can handle input voltages up to 28V, but the recommended maximum input voltage is 24V to ensure reliable operation and to prevent damage to the device.
• How do I ensure the MAX3748AETE operates within its thermal limits?
  Use a thermal pad or a heat sink to dissipate heat. Ensure good airflow around the device. Monitor the junction temperature (TJ) and adjust the operating conditions to keep TJ below 125°C. Use the thermal resistance (θJA) and thermal impedance (ZθJA) values in the datasheet to estimate the junction temperature.
• Can I use the MAX3748AETE in a synchronous buck converter configuration?
  Yes, the MAX3748AETE can be used in a synchronous buck converter configuration. However, ensure that the high-side and low-side FETs are properly synchronized to prevent shoot-through currents. Use a dead-time controller or a synchronous rectifier controller to ensure proper synchronization.