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DRV8839: MOTOR VIBRATION WHEN OPERATE 100% DUTY CYCLE

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Part Number: DRV8839

Hello Sir,

Good Morning,

Task : PWM based Motor Drive using Motor Driver IC

As above mention project we working, we are facing issue of MOTOR Vibration while motor operate at 100% duty cycle.

MCU:

a>  PWM output Freq : 2 Khz

b>  Duty Cycle             : 100%

MOTOR Specification : 

a> Voltage : 3 Vdc

b> Current : 0.15 A

We attach PWM Driver IC configuration,

        

We test with different PWM freq. such as 1Khz, 5Khz, 10Khz, 15Khz, 20Khz but get same issue.

Motor Only vibrate at 100% duty cycle.

Need Help , I am not get any idea what is issue.

Thanks & Regards

Chintan Patel


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