ezdsp F28335 ePWM5 and ePWM6

Mohamed Daoud

Hi,

I am using the DSP board F28335 and I am programming it using MATLAB blocks. I am working on a five phase machine and I need a 10 PWM pulses for the IGBTs. The first four PWMs ,ePWM1 (A&B), ePWM2 (A&B), ePWM3 (A&B) and ePWM4 (A&B), are working properly; but the fifith PWM is not working. I tried to use ePWM5 and ePWM6 to get the fifth PWM but there is no output on the pins of the dsp board. The code is right because it works on the other PWMs. Would someone please helps me solving this problem.

Thanks,

Mohamed

over 13 years ago

0 Mithat Kisacikoglu over 13 years ago

Prodigy 20 points

Mohamed, did you solve your problem? I am having exactly the same problem. Does anybody have a comment on it?

Thank you for your help.

0 Mohamed Daoud over 13 years ago in reply to Mithat Kisacikoglu

Prodigy 20 points

Hi Mithat,

Yes I solved the problem. You have to go to switch 2 on your dsp, then turn off the third switch on this switch. This tip is mentioned in the datasheet page 2-25 and you can see the configuration and the table of operation there. If you need further information don't hesitate to contact me.

Mohamed Daoud