Dear colleague

This is complicated to answer precisely without some specification of your motor (inertia, current ratings, torque ratings for instance and the actual speed when braking occurs, thermal parameters) and knowing the electronic rating as well.

For very small motors 10ms may be possible, if it's a large motor, it is probably not.

The point is to avoid to burn the motor or the electronic due to large current.

As a rule of the thumb you can estimate the braking torque needed to realize the braking using the inertia and assuming that the deceleration is constant (J*delta Omega/delta t = Tbrake), then comparing the result with the rated torque. You want |Tbrake| not too big compared to the rated torque . Usually BLDC can stand some surge current (which is proportional to the torque) for some time. You usually find this in the data sheet. Knowing the corresponding current you may also assess if the electronic is able to achieve the spec.

If the cycle is repetitive, things can be more tricky though because the inner temperature in the motor can build up to excessive values. In such case only simulation can say...

Hope it can help

Best regards

Ok I think to stop motor by used the new technical. As a rule of the thumb you can estimate the braking torque needed to realize the braking using the reverse flux density which is apply on the motor via the braking and the result is less time stop of motor.I think to design the circuit to how to generate the flux magnetic density

It is based on braking torque calculated using reverse flux density