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Chopping current of DRV8880

Kiyoung SON
Intellectual 515 points

Dear sir.

equation about 18 page

http://www.ti.com/lit/ds/symlink/drv8880.pdf

TRQ is the percentage value in the datasheet.

Is TRQ ratio value ?

plz help me.

  • 0
    TI__Guru** 114905 points
    Hi Kiyoung,

    TRQ allows changing the Ifs chopping current from 100% to 25%. This is generally used for holding currents, when the motor is stopped.

    The Ifs is the maximum current (100%) in the indexer table (Table 2). TRQ is used to adjust the current at each step to 1/4, 1/2, or 3/4 of the 100% values.