SLYA094 August   2025 LM5137F-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Hardware Design with LM5137F-Q1
    1. 2.1 Schematic
  6. 3PMP41158 Performance Curves
    1. 3.1 Four-Phase Interleaving
    2. 3.2 Thermal Performance
    3. 3.3 Load Transient
    4. 3.4 Light Load Efficiency
    5. 3.5 Bode Plot
  7. 4Reference Design Modification Conversion From 48V to 12V
  8. 5Summary
  9. 6References

5 Summary

A four phase interleaved Buck converter with LM5137F-Q1 in ADAS application has been validated in the application note. The converter can achieve excellent light load efficiency by shedding the phases and reducing switching frequent at light load. This also can fulfill the high di/dt requirement in ADAS application.

If battery voltage is 12V, LM25137-Q1, which is a 42V, 100% duty-cycle capable dual-channel synchronous buck controller, is preferred. With updated BOM, the converter based on LM5137F-Q1 can also be used in 48V battery application. For more details on those applications, please refer to PMP41165.