SNVAA47 May   2022 LP8732-Q1 , LP87521-Q1 , LP87524-Q1 , LP87561-Q1 , LP87562-Q1

 

  1. 1Abstract
    1.     Trademarks
  2. 1Design Parameters
  3. 2Power Solution
  4. 3Sequencing
    1. 3.1 Startup, Application Processor
    2. 3.2 Shutdown, Application Processor
    3. 3.3 Startup, Safety
    4. 3.4 Shutdown, Safety
    5. 3.5 Startup, RTC
    6. 3.6 Shutdown, RTC
  5. 4Schematic
  6. 5Software Drivers
  7. 6Recommended External Components
  8. 7Measurements
  9. 8Summary
  10. 9References

8 Summary

With this presented solution with the LP875610B-Q1, LP87562R-Q1, LP87521S-Q1, LP875241J-Q1, and LP873248-Q1 PMICs + discrete LDOs, it is possible to meet power requirements for Semidrive X9P/X9U application processor while maintaining good efficiency. Sequencing is handled in PMICs and only one EN signal is needed from the controller. Solution is compact due to minimum number of external components. I2C control allows diagnostic and PMIC control if needed.