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Original question:

TMS320F28388D: Possibility to implement a multiple phase-leg Interleaved peak-current control by internal resources of the...

TMS320F28388D: Additional question to multiple phase-leg Interleaved PCC

Sandro Margeta
Prodigy 50 points
Part Number: TMS320F28388D
Other Parts Discussed in Thread: C2000WARE

Hi TI Team, 

I have a question regarding the peak-current control on TMS320F28388D MCU. 

Reading the referenced post, I am still not exactly sure how to achieve peak-current control with at least four interleaved phase-legs on TMS320F28388D (without external circuitry).

Do You, by any chance, have some code examples for this exact case, or would You give me a reference to some of your documents with more detailed description that could help in achieving the former using only the internal MCU systems.

Kind regards, 
Sandro Margeta

  • 0
    TI__Genius 11965 points

    Please check the code for TIDM-2000. You can find this in C2000Ware DP SDK. This uses a different MCU and does peak current control. However, the same thing can be implemented with F28388 MCU because it has the same PCMC peripheral (integrated comparator with DAC and slope compensation) as in the F280049 MCU used in TIDM-2000

    Shamim

  • 0
    Prodigy 50 points

    Hello, 

    Thank you for Your answer. 

    Although the referenced code example for TIDM-2000 was helpful, it unfortunately does not cover the peak current control with at least four interleaved phase-legs, as it is stated in the original question.

    Does that mean that You do not have the requested code example (or related documentation) for this specific case?

    My main concerns are about the methods used to ensure the reliable operation of interleaved peak-current control with at least four interleaved phase legs (each shifted by 90°), especially in situations where the parameters of compensation slope are changed dynamically due to the very low minimal idle load while still maintaining wide input voltage.

    Kind regards, 

    Sandro Margeta

  • 0 in reply to Sandro Margeta
    TI__Genius 11965 points

    We dont have code example for this at this time. The only one we have is the single channel PCMC as in TIDM-2000.

    However, this interleaved PCMC can be implemented using C2000 MCU. The device is capable of implementing this. But we dont have an example at thus time to share.

    Shamim