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DRV8353: Using CSD19536KTT instead of CSD19532Q5B in large scale mass production.

Sezen Senyilmaz
Prodigy 30 points
Part Number: DRV8353
Other Parts Discussed in Thread: CSD19536KTT, CSD19532Q5B, ,

Texas Instruments noted that experts in the large-scale pre-acquisition forum could answer.

We want to use CSD19536KTT instead of CSD19532Q5B for large-scale mass production. CSD19532Q5B is used in DRV8353RH test board. As far as we know, the bulk capacitor and shunt resistors on the DRV8353RH trial board need to be changed. We will produce one type of board for multiple different engines. In other words, to drive motors of different power on one type of card; 0-100A continues current required. If we take the peaks into account, what is the shunt resistance value we need?

Is there a need to add or change anything else?

I find it helpful to ask before I order the products from Texas Instruments.

Thank you.

  • 0
    TI__Guru 65190 points

    Sezen,

    Could you share your board design? What is the application?

    The datasheet discusses selecting the shunt resistor here: 9.2.1.2.4 Sense-Amplifier Bidirectional Configuration (DRV8353 and DRV8353R)

    Regards,

    -Adam

  • 0 in reply to Adam Sidelsky
    Prodigy 30 points

    Hello again; You asked sample schema, the sample schema we used as the base is the same Layout Example mentioned in the datasheet of drv8353. We even based on the evaluation board bom list.

    We just want to use CSD19536KTT instead of CSD19532Q5B. We want a current of at least 40 Amps to be provided. The DRV8353 datasheet is said to be less than 2.5mOhm. But 7mOhm is used in the Evalution Board ...

    Now, if the bom list we are based on is like in the evalution board, will it be enough to simply replace the shunt resistance with 2.5mOhm and increase the bulk capacitor?

    Is any configuration setting required other than shunt resistor and bulk capacitor?

    Thank you...

  • 0 in reply to Sezen Senyilmaz
    TI__Guru 65190 points

    Sezen,

    You can change the shunt resistor and device settings to match your application and system current, this is explained in the datasheet section I mentioned above,  9.2.1.2.4 Sense-Amplifier Bidirectional Configuration (DRV8353 and DRV8353R).


    This should be all that is needed if you have copied the EVM for the remaining component selection.

    Regards,

    -Adam