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Hello Experts,
We have a setup where we control two motors simultaniously, with the PWM modules configured as shown in the below image.
Motor A : EPWM1,2,3 (Uses SDFM1)
Motor B: EPWM4,5,6 (Uses SDFM2)
Motor B's PWMs are phase shifted by 90 degrees(not shown in the image.)
We have Delta Sigma ADC's (AMC1303x) as our primary current measurment sources and would like to use the SDSYNC feature of the SDFM module to synchronize the data.
We had a look at the example TMDXIDDK379D which has the option to use the SDFM module.(Configured for one motor only)
Looking in to the source, we see that the sync out pulse of EPWM1 is connected to the SYNCIN of EPWM10. Also EPWM10's SYNCIN and SYNCOUT are shorted together , so that the sync pulse reaches EPWM11.
My question here , is how do we do the same for the second Motor? (Motor B uses SDFM2 which gets its sync pulse from EPWM12)..
Which ever way i look at it , i think EPWM11 would always get '2' sync pulses(Meaning that the SDFM1's data filter would be reset twice) , for the master's pwmsync to reach EPWM12??
Kindly help
