DRV8825: ISENA waveform

Jeffrey Chung1

Part Number: DRV8825

Tool/software:

Hi Team,

Customer is verifying DRV8825 on their board, but they found that ISENA waveform is not linear. Is it normal waveform? If yes, please explain me on it. If not, please let me know how to improve it.

DRV8825 waveform.pdf

Regards,

27 days ago

+1 Murugavel4637 26 days ago

TI__Mastermind 44595 points

Hi Jeffrey,

Thanks for your question. The ISEN is on the LS-FET source. It will not match This looks normal. It will not sense current during slow decay as the recirculation current will be via the two LS-FETs. See below.

Regards, Murugavel

0 Jeffrey Chung1 26 days ago in reply to Murugavel4637

Genius 3310 points

Hi Murugavel,

Thank you for your clear response.

Regards,

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DRV8825: ISENA waveform