进行 EPWM1 和 EPWM2 的相位测试，设置频率 15KHz，使用上下计数，则TimeBasePeriod 为 4000；
EPWM1 作为同步信号源，相位为 0；
想要设置 EWPM2 与 EPWM1 的相位差达到 1/3，当 EPWM2 的相位差值设置为 1333 时，测试输出的实际信号相位差为 1/6；
当设置 EPWM2 的相位差值设置为 2666 时，测试输出的实际信号相位差为 1/3；
故障问题：EPWM2 的相位差值设置为 5333时，测试输出的实际信号相位差为 2/3。此时，若设置 EPWM2 的 CMPA 的值小于 2666 时， EPWM2 可以正常输出信号，大于 2666 时则信号消失。
我不知道我的程序哪里有问题，希望专业人士可以帮忙分析一下，多谢。
程序如下：
EPWM_setClockPrescaler(EPWM1_BASE, EPWM_CLOCK_DIVIDER_1, EPWM_HSCLOCK_DIVIDER_1); //<1> 时钟分频
EPWM_setTimeBasePeriod(EPWM1_BASE, 4000); //<1> 周期计数值
EPWM_setTimeBaseCounter(EPWM1_BASE, 0); //<1> 时基计数器清零
EPWM_setTimeBaseCounterMode(EPWM1_BASE, EPWM_COUNTER_MODE_UP_DOWN); //<2> 上下计数模式
EPWM_enablePhaseShiftLoad(EPWM1_BASE); //<> 使能同步信号触发装载
EPWM_enableSyncOutPulseSource(EPWM1_BASE, EPWM_SYNC_OUT_PULSE_ON_CNTR_ZERO);
EPWM_setPhaseShift(EPWM1_BASE, 0); //<> 相位偏移设置
EPWM_setCounterCompareValue(myEPWM1_BASE, EPWM_COUNTER_COMPARE_A, 3000);
EPWM_setCounterCompareShadowLoadMode(myEPWM1_BASE, EPWM_COUNTER_COMPARE_A, EPWM_COMP_LOAD_ON_CNTR_ZERO);
EPWM_setCounterCompareValue(myEPWM1_BASE, EPWM_COUNTER_COMPARE_B, 1000);
EPWM_setCounterCompareShadowLoadMode(myEPWM1_BASE, EPWM_COUNTER_COMPARE_B, EPWM_COMP_LOAD_ON_CNTR_ZERO);
EPWM_setActionQualifierAction(EPWM1_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPA); //<> 上升沿低电平
EPWM_setActionQualifierAction(EPWM1_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_TIMEBASE_DOWN_CMPA); //<> 下降沿高电平
EPWM_setActionQualifierAction(EPWM1_BASE, EPWM_AQ_OUTPUT_B, EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPA); //<> 上升沿低电平
EPWM_setActionQualifierAction(EPWM1_BASE, EPWM_AQ_OUTPUT_B, EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_TIMEBASE_DOWN_CMPB); //<> 下降沿高电平
EPWM_setClockPrescaler(myEPWM2_BASE, EPWM_CLOCK_DIVIDER_1, EPWM_HSCLOCK_DIVIDER_1);
EPWM_setTimeBasePeriod(myEPWM2_BASE, 4000);
EPWM_setTimeBaseCounter(myEPWM2_BASE, 0);
EPWM_setTimeBaseCounterMode(myEPWM2_BASE, EPWM_COUNTER_MODE_UP_DOWN);
EPWM_enablePhaseShiftLoad(EPWM2_BASE);
EPWM_setPhaseShift(myEPWM2_BASE, 5333);
EPWM_setCounterCompareValue(myEPWM2_BASE, EPWM_COUNTER_COMPARE_A, 2667);
EPWM_setCounterCompareShadowLoadMode(myEPWM2_BASE, EPWM_COUNTER_COMPARE_A, EPWM_COMP_LOAD_ON_CNTR_ZERO);
EPWM_setCounterCompareValue(myEPWM2_BASE, EPWM_COUNTER_COMPARE_B, 1000);
EPWM_setCounterCompareShadowLoadMode(myEPWM2_BASE, EPWM_COUNTER_COMPARE_B, EPWM_COMP_LOAD_ON_CNTR_ZERO);
EPWM_setActionQualifierAction(EPWM2_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPA); //<> 上升沿低电平
EPWM_setActionQualifierAction(EPWM2_BASE, EPWM_AQ_OUTPUT_A, EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_TIMEBASE_DOWN_CMPA); //<> 下降沿高电平
EPWM_setActionQualifierAction(EPWM2_BASE, EPWM_AQ_OUTPUT_B, EPWM_AQ_OUTPUT_HIGH, EPWM_AQ_OUTPUT_ON_TIMEBASE_UP_CMPA); //<> 上升沿低电平
EPWM_setActionQualifierAction(EPWM2_BASE, EPWM_AQ_OUTPUT_B, EPWM_AQ_OUTPUT_LOW, EPWM_AQ_OUTPUT_ON_TIMEBASE_DOWN_CMPB); //<> 下降沿高电平