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Original question:

DRV8462: how drv8462 know relation between required torque and ATQ_CNT parameter

DRV8462: ATQ_CNT

Andreas
Prodigy 170 points
Part Number: DRV8462

Hi

I'm not interested in Auto Torque mode of the DRV8462 but would like to use ATQ_CNT to measure the load torque, similar with the current of a brushed motor.I made some measurements of ATQ_CNT with different load torque, supply voltage and VREF settings and I think it's possible: 

Motor was a 23H2076-400:

I would like to measure the load torque with ATQ_CNT. Is there a general formula how supply voltage, VREF, speed, temperature, (others?) influence the ATQ_CNT Register?