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Questions about motor driver drv8835

Hong Gildong
Associate

[I used a translator.]

Hi,

I run the motor in "drv8835 Fast DK Mode".

​The following waveform appears on the oscilloscope.

0690X000008ABPgQAO.jpg

When the pulse is low, about 6~7V is output

Is it working correctly?

Is it normal not to fall to 0V?

When operating in Slow DK (phase / in mode), the motor will run slowly even with a small duty ratio.

However, when operating with Fast DK, the motor does not operate at a small duty ratio, and the motor operates only when the duty ratio has risen above a certain value.

Is it working right?

Do you have a guide or a workaround?

Thank you in advance for your reply.

Have a nice day.

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