• State Resolved
  • Locked Locked
  • Replies 1 reply
  • Subscribers 83 subscribers
  • Views 353 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

TMS320F28379D: TMS320F28379D

TMS320F28379D: TMS320F28379D

robin gangopadhya18
Mastermind 6326 points
Part Number: TMS320F28379D
Other Parts Discussed in Thread: UC3901

In order to provide max benefit offered by  Delfino control laws, how would one derive isolated output voltage for feeding back to the MCU to the appropriate ADC inputs? Traditional methods offered by UC3901 already has error amp etc which needs to be compensated the old fashioned way & thus the converter would lose its adaptability.  Is there any application notes on this subject using other techniques of isolation?

-A related matter will be to integrate this with Delfino control card we plan to use to demo our hardware,

-will appreciate any help in solving this issue.

r

  • 0
    TI__Guru 60865 points

    Hi Robin,

    Two potential solutions to consider:

    • Use the sigma-delta demodulator peripheral (SDFM) along with a sigma-delta front-end and optoisolators to do isolated sensing (the feedback across the isolation boundary is digital in this case)
    • Use a smaller C2000 MCU from the F28004x family to do sensing and pre-processing on the hot-side, then use the FSI peripheral to transfer data across the isolation boundary (again digitally) to be concentrated in a larger F2838x family device.