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Sinusoidal PWM generation using TMS320F28335 and code composer v3.3

Arun George
Prodigy 20 points


Sir, I am a beginner to dsp and programming, trying to implement a simple sinusoidal PWM at ePWMA pins (with 50Hz sine and 5KHz Carrier). As far as i understood i have to change the CMPA value repeatedly after every comparison of counter with  CMPA. So i calculated all 100 CMPA values and stored it in an array. But i dont know how to interrupt the comparison after every (1/5KHz) sec and load the next CMPA value. (I am not using IQmath as i am having all CMPA values by-hand).

Please Help. Thank you

  • 0
    Guru 192875 points

    Hi Arun,

    As you're a beginner, I would suggest you to start with CCS v6.1 and not CCS v3.3.

    Arun George said:
    But i dont know how to interrupt the comparison after every (1/5KHz) sec and load the next CMPA value.

    For SPWM refer this thread:



    Regards,
    Gautam