SLVS855K July 2008 – March 2021 DRV8800 , DRV8801
The braking function is implemented by driving the device in slow-decay mode (MODE 1 pin is high) and deasserting the enable to low. Because it is possible to drive current in both directions through the DMOS switches, this configuration effectively shorts out the motor-generated BEMF as long as the ENABLE chop mode is asserted. The maximum current can be approximated by VBEMF/RL. Care should be taken to ensure that the maximum ratings of the device are not exceeded in worse-case braking situations – high-speed and high-inertia loads.