ePWM block generate SPWM
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Hi,
I am trying to generate SPWM signal in DSPF28335 by the ePWM block. But the output signal always features a fixed pulse width which is equivalent to the "input port -> CMPA initial value".
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/170531/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/170533/image.png)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/170536/image.png)
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zhichuan wang
el 4 de Dic. de 2017
Can you attach you model?
3 comentarios
zhichuan wang
el 4 de Dic. de 2017
Editada: zhichuan wang
el 4 de Dic. de 2017
I have never used the C280X ePWM block. Based on my experience, I recommend you change the value of Amplitude in SINE WAVE1 to an integer in [0 750]. And Bias is set at 750. Maybe it will work.
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