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CCS/TMS320F28335: TMS320F28335

HQ
Intellectual 360 points

Part Number: TMS320F28335
Other Parts Discussed in Thread: CONTROLSUITE

Tool/software: Code Composer Studio

Hi, 

I need to get started with closed loop control of a DC-DC converter (boost converter) using TMS320F28335. 

I am unable to understand the close loop control implementation in CCS for PWM duty ratio control. The examples in control suite are very complex. Can you provide me a simple example of close loop control in C (Code Composer Studio) of DC-DC converter that controls the PWM duty ratio in order to regulate the output voltage.

  • 0
    TI__Genius 16065 points
    Hi Haleena,

    Which specific example in controlSUITE were you looking at?

    Regards,
    Chen
  • 0 in reply to Chen Jiang ti
    Intellectual 360 points

    Hi Chen,

    I have been looking at Control Suite examples of Buck_VMC_F28069M converter and bi directional buck/boost converter.

    I am unable to find the simple close loop duty ratio PWM control of DC-DC converter (buck or boost) converter where I can actually see the transfer function being implemented and error being processed to control the duty ratio subsequently.

    It would be very helpful if you could provide me with such working example.

    Regards,
    Haleema

  • 0 in reply to HQ
    TI__Genius 16065 points
    Hi Haleema,

    Yes, those are two basic examples that we have. If you would like to see the transfer function, you can look at the doc below. However, it is peak current mode control instead of the basic voltage mode control. It has the buck converter and compensation design related information. Hope this helps.
    www.ti.com/.../sprabe7a.pdf

    Regards,
    Chen