PM6670ASTR datasheet by STMicroelectronics

PM6670ASTR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  STMicroelectronics provides a recommended PCB layout in the application note AN4571, which includes guidelines for thermal vias, copper pours, and component placement to ensure optimal thermal performance.
• How do I select the correct input capacitor values for the PM6670ASTR?
  The input capacitor values depend on the input voltage, output voltage, and output current. A general guideline is to use a minimum of 10uF ceramic capacitors with a voltage rating of at least 1.5 times the input voltage. Refer to the application note AN4571 for more detailed guidance.
• What is the maximum allowed voltage on the EN pin?
  The maximum allowed voltage on the EN (enable) pin is 6V. Exceeding this voltage may damage the device. It's recommended to use a voltage divider or a level shifter if the control signal is higher than 6V.
• Can I use the PM6670ASTR in a high-temperature environment?
  The PM6670ASTR is rated for operation up to 150°C. However, the device's performance and reliability may degrade at high temperatures. It's essential to follow the recommended thermal design guidelines and consider derating the device's performance at high temperatures.
• How do I ensure electromagnetic compatibility (EMC) with the PM6670ASTR?
  To ensure EMC, follow the guidelines in the application note AN4571, which includes recommendations for PCB layout, component selection, and shielding. Additionally, consider using a common-mode choke and a filter capacitor to reduce electromagnetic interference (EMI).