STMPS2171MTR datasheet by STMicroelectronics

STMPS2171MTR Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal thermal performance?
  A 2-layer or 4-layer PCB with a solid ground plane and thermal vias is recommended. Keep the component away from heat sources and ensure good airflow.
• How do I ensure reliable operation in high-temperature environments?
  Use a heat sink, ensure good airflow, and consider derating the output current. Also, ensure the device is soldered correctly to the PCB to minimize thermal resistance.
• What is the recommended input capacitor type and value for optimal performance?
  A low-ESR ceramic capacitor (e.g., X5R or X7R) with a value of 10-22uF is recommended. The capacitor should be placed close to the VIN pin.
• How do I minimize electromagnetic interference (EMI) in my design?
  Use a shielded inductor, keep the switching node (SW) away from sensitive nodes, and use a common-mode choke or ferrite bead on the output. Also, ensure good PCB layout and grounding practices.
• What is the maximum allowed voltage on the EN pin?
  The maximum allowed voltage on the EN pin is 6V. Exceeding this voltage may damage the device.