DRV8426: Smart tune ripple control

Kuramochi Tadahiko

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

over 4 years ago

+1 Ryan Kehr over 4 years ago

TI__Guru 55595 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

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DRV8426: Smart tune ripple control