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VNH5019 braking


#1

Good day,
does the vnh5019 support shortening the outA und outB to increase the stall torque of the motor?

Thanks


#2

Hi.

The VNH5019 driver can configure its outputs to brake high (both outputs connected to VIN) or brake low (both outputs connected to ground) by bringing INA and INB both high or low respectively. Braking like this should slow the motor down more quickly, but it has nothing to do with the stall torque of the motor.

If you post more about what you are trying to do, I might be able to offer some suggestions.

-Claire


#3

Thanks for the reply.
if you short curcuit both motor leads, the self magnetic induction leads to a higher stall torque.
What does the vnh5019 exactly do in the braking mode?

thanks


#4

I mentioned in my previous post what the VNH5019 does with the motor outputs while braking, but you can see more about it in the datasheet for the VNH5019.

If you short the two leads of a brushed DC motor together it will resist rotating. If the motor is already spinning when the leads are shorted, the motor will slow down more quickly (or exert more torque toward slowing down). That is separate from the stall torque of a motor which is a property of the motor.

-Claire


#5

Thanks.