SDAA108 October   2025 LM5171 , LM5171-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Circuit Differences Between Channels
  6. 3Design of External Error Amplifier Circuit
  7. 4Design of Additional OVP Circuit
  8. 5Common Settings
  9. 6Constant Current Operation with ISETx Clamping
  10. 7Summary
  11. 8References

7 Summary

Two typical applications of operating the two channels of LM5171 independently are introduced,

  • Two independent CC/CV chargers.
  • A boost converter cascaded by a buck converter.

The circuit differences between the two channels of LM5171 are shown. The missing features of CH2 for a complete bidirectional converter are summarized. The design requirements of the external circuits are analyzed. Detailed block diagrams of the external circuit are shown, and some design examples are given.