TMS320F280025C: TMS320F280025C

Tool/software:

 the current isn't being drawn during charging, with the upper MOSFET turning off and the lower MOSFET having a pulse width of around 5µs(Ton) at a frequency of 20kHz.

i am using reference design is   TMS320F28027 and an 800VA pure sine wave inverter design as for the design i am implementing the code,

slaa602a.pdf

 EPWM_setClockPrescaler(myEPWM3_BASE, EPWM_CLOCK_DIVIDER_1, EPWM_HSCLOCK_DIVIDER_1);
        EPWM_setTimeBasePeriod(myEPWM3_BASE, 2500);
        EPWM_setTimeBaseCounter(myEPWM3_BASE, 0);
        EPWM_setTimeBaseCounterMode(myEPWM3_BASE, EPWM_COUNTER_MODE_UP_DOWN);
        EPWM_disablePhaseShiftLoad(myEPWM3_BASE);
        EPWM_setPhaseShift(myEPWM3_BASE, 0);
        EPWM_setCounterCompareValue(myEPWM3_BASE, EPWM_COUNTER_COMPARE_A, 1);
        EPWM_setCounterCompareShadowLoadMode(myEPWM3_BASE, EPWM_COUNTER_COMPARE_A, EPWM_COMP_LOAD_ON_CNTR_ZERO);
        EPWM_setCounterCompareValue(myEPWM3_BASE, EPWM_COUNTER_COMPARE_B, 1);
        EPWM_setCounterCompareShadowLoadMode(myEPWM3_BASE, EPWM_COUNTER_COMPARE_B, EPWM_COMP_LOAD_ON_CNTR_ZERO);

        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_NO_CHANGE, EPWM_AQ_OUTPUT_ON_TIMEBASE_ZERO);
        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_NO_CHANGE, EPWM_AQ_OUTPUT_ON_TIMEBASE_PERIOD);
        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPA);
        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_TIMEBASE_DOWN_CMPA);
        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_NO_CHANGE, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPB);
        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_NO_CHANGE, EPWM_AQ_OUTPUT_ON_TIMEBASE_DOWN_CMPB);
        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_B, EPWM_AQ_OUTPUT_NO_CHANGE, EPWM_AQ_OUTPUT_ON_TIMEBASE_ZERO);
        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_B, EPWM_AQ_OUTPUT_NO_CHANGE, EPWM_AQ_OUTPUT_ON_TIMEBASE_PERIOD);
        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_B, EPWM_AQ_OUTPUT_NO_CHANGE, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPA);
        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_B, EPWM_AQ_OUTPUT_NO_CHANGE, EPWM_AQ_OUTPUT_ON_TIMEBASE_DOWN_CMPA);
        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_B, EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPB);
        EPWM_setActionQualifierAction(myEPWM3_BASE, EPWM_AQ_OUTPUT_B, EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_TIMEBASE_DOWN_CMPB);

        EPWM_setRisingEdgeDelayCountShadowLoadMode(myEPWM3_BASE, EPWM_RED_LOAD_ON_CNTR_ZERO);
        EPWM_disableRisingEdgeDelayCountShadowLoadMode(myEPWM3_BASE);
        EPWM_setFallingEdgeDelayCountShadowLoadMode(myEPWM3_BASE, EPWM_FED_LOAD_ON_CNTR_ZERO);
        EPWM_disableFallingEdgeDelayCountShadowLoadMode(myEPWM3_BASE);
        EPWM_enableInterrupt(myEPWM3_BASE);
        EPWM_setInterruptSource(myEPWM3_BASE, EPWM_INT_TBCTR_ZERO);
        EPWM_setInterruptEventCount(myEPWM3_BASE, 3);
       // EPWM_setDeadBandDelayPolarity(myEPWM3_BASE, EPWM_DB_FED, EPWM_DB_POLARITY_ACTIVE_LOW);
        EPWM_setDeadBandDelayMode(myEPWM3_BASE, EPWM_DB_RED, false);
        EPWM_setRisingEdgeDelayCountShadowLoadMode(myEPWM3_BASE, EPWM_RED_LOAD_ON_CNTR_ZERO);
        EPWM_disableRisingEdgeDelayCountShadowLoadMode(myEPWM3_BASE);
        EPWM_setRisingEdgeDelayCount(myEPWM3_BASE, 0);
        EPWM_setDeadBandDelayMode(myEPWM3_BASE, EPWM_DB_FED, false);
        EPWM_setFallingEdgeDelayCountShadowLoadMode(myEPWM3_BASE, EPWM_FED_LOAD_ON_CNTR_ZERO);
        EPWM_disableFallingEdgeDelayCountShadowLoadMode(myEPWM3_BASE);
        EPWM_setFallingEdgeDelayCount(myEPWM3_BASE, 0);