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DRV8434: minimum value of t_OFF and maximum value of t_OFF

Shunsuke Yamamoto
Expert 7811 points
Part Number: DRV8434

Hi team,

May I know the possible minimum value of t_OFF and possible maximum value of t_OFF when DRV8434 is in smart tune Ripple Control Decay Mode?

Best regards,

Shunsuke Yamamoto

  • +1
    TI__Mastermind 45035 points

    Hi Yamamoto-san,

    TOFF in STRC decay mode depends on the current ripple settings, motor characteristics, step rate of operation and BEMF, mechanical load on the motor, IFS setting, operating voltage etc. The DRV8434 does not have an internal limit to this values. Typically it can go as low as TOFF with STDD mode could go even lower depending on the motor and the mentioned conditions as well as as high as or higher than the TOFF setting for STDD depending on motor operating conditions. 

    Is there a specific concern for a customer? What is the specific concern? Thanks.

    Regards, Murugavel