Part Number:TMS320F28020
Hi Expert,
Customer has met the DBRED load issue as the below shown.
In the below figure,
The green EPWM3A and blue EPWM2A are synchronous and have same TBPRD configuration.
The differences of the two PWMs are the blue EPWM2A could be load DBRED value while the green EPWM3A with no DB register setting; the blue EPWM2A is set low when CBC event occurs while there is no action on green EPWM3A .
The purple wave will be low when the "EPwm1Regs.TZFLG.bit.CBC==1".
The yellow pulse means the CBC event which could trigger EPWM3A occur at that moment.
The below is the PWM configuration code.
(Please visit the site to view this file)
Thanks!
-Rayna