STK672-523-E
Ex.3: Changeover from 1-2 phase to 2-phase excitation
This driver stabilizes motor phase performance at changeover excitation mode during motor motion.
This driver is not able to detect CLOCK rising edge, if the time between CLOCK and MODE rising edge was less than
4μs.
Therefore, motor phase performance doesn’t change in 1 CLOCK cycle.
MODE
FAO
FAB
FB0
FBB
CLOCK (1) (2) (3) (4) (5) (6) (7)
A
B
B
A
The solid arrows indicate 2-phase excitation, and dashed arrows indicate 1-phase excitation.
No. A2110-21/22