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TMS320F280049: Which controller format to use from DCL?

Shengnan Li
Expert 1010 points

Part Number: TMS320F280049

Hi, 

I am developing a digital boost converter, we are currently using an analog converter which has the following feed back voltage compensator. I want to get the same dynamic performance, therefore i want to program this into the digital converter. If without Cc2 it is a PI, but with Cc2 , is there a format in the DigitalControlLibrary that I can use?

  • +1
    TI__Expert 7835 points

    Hi Shengnan,

    It looks like you are implementing a type-2 compensator with Operational Transconductance Amplifier (OTA) like this one below?

    If this is the case, you should be able to get the equivalent digital compensator with 2 pole 2 zero (2p2z) configuration. In DCL library, you can pick the DF22 form.

    For coefficient, you can refer to this document to derive the transfer function of your compensator, and derive the digital equivalence accordingly.

    Regards,

    Han