How to obtain the commutation timing sequence table?

[fedora]

Hello all:

    I am testing the BLDC using the MCSPTE1 AK144 kit. 

    When I was reading the AN12435.pdf, I saw the Figure 4 "Six-step switching sequence" of page 5, and please refer to the attached sequence.png file.

    I want to know how this switching sequence is obtained? What method can be used to obtain the sequence?

    Thanks!

Best regards,

Fedora

[_Leo_ · Accepted solution]

Hi,

Thank you so much for your interest in our products and for using our community.

You could refer to Figure 2. 3-phase BEMF voltages and phase currents of a BLDC motor from the same app note.

On the other hand, Six-step commutation is a very common method for driving a 3-phase star-connected BLDC motor, maybe there are more detailed documentation about this on the web. We usually just describe the basics to implement motor control with our MCUs.

Hope it helps you.

Have a nice day!

[fedora]

Hello Leo:

   Ok, I understand now. I will continue my research. Thanks for your help.

Best regards,

Fedora