SLVAFK5A December   2023  – February 2024 LM5177

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Parallel or Multiphase Power Stages
    1. 2.1 Paralleling Power Stages
      1. 2.1.1 Load Balancing Requirement
    2. 2.2 Clock Generation
    3. 2.3 Interconnection of the Power Stages
  6. 3Application Implementation
    1. 3.1 Soft-start Capacitor
    2. 3.2 Compensation
    3. 3.3 Input and Output Capacitor
    4. 3.4 Usage of the Average Current Sensor
  7. 4Test Results
    1. 4.1 Load Current Balancing
    2. 4.2 Inductor Current
    3. 4.3 Thermal Images
      1. 4.3.1 Dual Phase Operation at Variable Load
      2. 4.3.2 Comparison Between Single Phase and Dual Phase Operation
  8. 5Summary
  9. 6References
  10. 7Revision History

3.4 Usage of the Average Current Sensor

The current monitor (IMONLIM) function can be enabled when operating power stages in parallel and being used in multiple options. So with two power stages following options can be possible:

  • none used - both disabled
  • only one used as current monitor, second is disabled
  • first current monitor used for input current sensing, second used for output current sensing

In Figure 3-1, a configuration with the current monitor on the input and the current monitor on the output is shown.