SLLSFV2 August 2023 MCF8316C-Q1
PRODUCTION DATA
When a motor is driven, energy is transferred from the power supply into the motor. Some of this energy is stored in the form of inductive and mechanical energy. If the speed command suddenly drops such that the BEMF voltage generated by the motor is greater than the voltage that is applied to the motor, then the mechanical energy of the motor is returned to the power supply and the VM voltage surges. The AVS feature works to prevent this voltage surge on VM and can be enabled by setting AVS_EN to 1b. AVS can be disabled by setting AVS_EN to 0b. When AVS is disabled, the deceleration rate is configured through CL_DEC_CONFIG.