ZHCSSV1 august 2023 MCF8316C-Q1
PRODUCTION DATA
Active spin down mode is configured by setting MTR_STOP to 100b. When a motor stop command is received, the MCF8316C-Q1 reduces SPEED_REF to ACT_SPIN_THR and then transitions to Hi-Z state by turning all MOSFETs OFF. The advantage of this mode is that by reducing SPEED_REF, the motor is decelerated to lower speed thereby reducing the phase currents before entering Hi-Z. Now, when the motor transitions into Hi-Z state, the energy transfer to the power supply is reduced. The threshold ACT_SPIN_THR needs to configured high enough for MCF8316C-Q1 to not lose synchronization with the motor.