DRV10964: When power on and fan auto speed up?

Hi team,

Do you have any feedback?

Hi Jimmy Wang,

I think always high (Duty is 100% ) is not recognized at startup without seeing a transition. Let me confirm this and we may have to see a method to delay speed pin pulling high. Please give me a daytime I will get back to you.

Thanks and Best Regards,

Venkatadri S

Hi team,

Any feedback? thanks 

Hi Jimmy Wang,

The PWM duty cycle should be less than 100% commanded.  In the default case since VCC is pulled high it is 100%

I will check what is maximum duty condition when device accepts speed command. Please provide a week time for me to confirm.

Thanks and Best Regards,

Venkatadri S

Thanks and Best Regards,

Venkatadri S

Hi team,

Do you have any suggestions? thanks 

Hi Jimmy Wang,

I do not have update on this yet, I will keep you updated. Meanwhile, as per above mentioned reason (data sheet snap), the timing specification shows duty cycle to be greater than 0% and less than 100% for motor to goto run state. By how much is the data I will find and update you.

Thanks and Best Regards,

Venkatadri S