ZHCSSV1 august 2023 MCF8316C-Q1
PRODUCTION DATA
Double align is enabled by configuring MTR_STARTUP to 01b. Single align is not reliable when the initial position of the rotor is 180o out of phase with the applied phase pattern. In this case, it is possible to have start-up failures using single align. In order to improve the reliability of align based start-up, the MCF8316C-Q1 provides the option of double align start-up. In double align start-up, MCF8316C-Q1 uses a phase pattern for the second align that is 90o ahead of the first align phase pattern. In double align, relevant parameters like align time, current limit, ramp rate are the same as in the case of single align - two different phase patterns are applied in succession with the same parameters to ensure that the motor will be aligned to a known position irrespective of initial rotor position.