SLVAFW9 August   2024 LM51772

 

  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

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. With two power stages, the following options are possible:

  • None used - both disabled
  • Only one used as current monitor, second is disabled
  • First current monitor used for input current sensing, second current monitor used for output current sensing

The configuration with the current monitor on the input and the current monitor on the output is shown in Figure 3-1.