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DRV8885: 2-phase excitation of full step

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Part Number: DRV8885

Hi Experts,

My customer is interested in DRV8885 because of this device does not require an external resistor for current motor.
Customer will use Full-Step and customer's motor is needed 1.5Arms output current. According to datasheet, Table 2, p14, output current is limited by 71% full scale. (stated by DRV8885 recommended operating conditions.) Does it mean 1.5Arms*0.71%=1.065Arms, correct? If so, why is limitation? Is it thermal limitation?

DRV8880 achieved over 1.5Arms output current but it requires a large external resistors for current monitor. It does not prefer for customer.

Do you have any alternative device?

Your support would be much appreciated.
Best Regards,
Fujiwara


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