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TMS320F28374S: About EPWM8A，EPWM8B set

Delmore Du
Intellectual 340 points
Part Number: TMS320F28374S

1，EPWM8A，EPWM8B，EPWM9A，EPWM9B，EPWM10A，

Can the five ch BST be set to send waves with a difference of 72 degrees?

2，EPWM8A and EPWM8B, that is, BST1 and BST3, have a difference of 144 degrees. How to set?

  • 0
    TI__Mastermind 23310 points

    Hi Delmore,

    Delmore Du said:
    Can the five ch BST be set to send waves with a difference of 72 degrees?

    Can you please provide more context for question 1? Do you have a diagram perhaps of your desired output?

    Delmore Du said:
    2，EPWM8A and EPWM8B, that is, BST1 and BST3, have a difference of 144 degrees. How to set?

    You won't be able to set a phase shift through the conventional way since you want the phase shift between A and B channels of the same EPWM module but you can create a shift in the outputs based on the counter compare values. You could achieve a shift by offsetting CMPB with regards to CMPA. 

    Best Regards,

    Marlyn