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DRV11873: Problems of design by DRV11873

Part Number: DRV11873

Dear,

Our customers use DRV11873 to drive brushless motor. But they encounter problems: the motor can rotate with the current below 0.3A, but the motor shakes severely. When the current exceeds 0.3A, the motor stop rotating, the current displays as 0.7A. So please help check if the circuit or the parameters have problems, thanks.