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DRV8824: output waveform of DRV8824

Betty Guo
Expert 7300 points
Part Number: DRV8824

Hi team,

customer have questions about DRV8824 applicaiton, especially in AOUT, I summarize the schematic and test result, could you help check it ,thanks.

TI 相关芯片使用问题咨询_20201014-MD.docx

  • 0
    TI__Guru 56650 points

    Betty,

    Question: "Customer not sure if the waveform of AOUT- and AOUT+ is correct or not? Could you help comments why the output voltage waveform have many spike, and how to improve it?"

    Answer: the AOUT+/- waveform looks correct to me. When the output current reaches the setting point, the DRV8824 would adjust the duty cycle to keep the current regulation. I would think the spike that you talk about is the PWM control waveform.