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DRV8426: Smart tune ripple control

Kuramochi Tadahiko
Guru 28715 points
Part Number: DRV8426

Hi,

Could you tell me the condition that decay mode turns fast decay on ripple control mode as the following inside of red rectangle?

Best Regards,

Kuramochi

  • +1
    TI__Guru 55365 points

    Kuramochi-san,

    This occurs on a step change between two micro-stepping levels when current is falling.  Fast decay is introduced to ensure current waveform does not get distorted and can "catch up" with the high speed STEP pulses.

    Regards,

    Ryan