LB11820M controls brushless motors, please help

daviu1234

LB11820M controls brushless motors, please help [Copy link]

When I use LB11820M to control a three-phase brushless DC motor, after the 11820 chip reads the three position sensor signals of the DC motor, the three-phase drive circuit inside the chip outputs six signals to control the on and off of the six power tubes and thus control the rotation of the motor. But for some reason, the output timing of the WH, WL, VH, VL, UH, UL signals is sometimes normal, and sometimes WH, VH, UH are all low, which is abnormal, and the motor does not move. What is the problem? Can anyone give me some advice? Thank you

bacchus

Without knowing the LB11820M chip, it is difficult to answer

njlianjian

I haven't used this chip.

wxbwxb

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