SLUAAD0 September   2021 UCC28064A

 

  1.   Trademarks
  2. 1Introduction
  3. 2Normal Theory of Multi Phases Control UCC28070 and UCC28064A Operation
  4. 3Achieving Adjustable Phase Control Operation with UCC28064A
  5. 4Achieving Multi Phases Control Operation
    1. 4.1 Disable Feedback of Secondary (Connecting VSENSE and VREF Directly)
    2. 4.2 Disable Feedback of Secondary (Connecting VSENSE and VREF with Diode)
    3. 4.3 External 4 Multi-phase Mode Control Circuit of UCC28064A
    4. 4.4 Detail Operating for External Paralleling Two-Power Stages Control Circuit of UCC28064A
    5. 4.5 Test result for External Paralleling two power stages control circuit of UCC28064A
  6. 5Summary
  7. 6References

4.3 External 4 Multi-phase Mode Control Circuit of UCC28064A

Figure 4-3 shows how to accurately achieve paralleling and current sharing of TM PFC power stage.

Figure 4-3 External Circuit for Paralleling Two Power Stages with Two UCC28064A