Why can't the following method be used to achieve synchronous phase shift between ePWM3 and ePWM4 of F280049C?
I configured ePWM2 to achieve synchronous phase shifting relative to ePWM1, and ePWM3 to achieve synchronous phase shifting relative to ePWM2, but ePWM4 cannot achieve synchronous phase shifting relative to ePWM3, and ePWM5 can also achieve synchronous phase shifting relative to ePWM4, and ePWM6 relative to ePWM4 Since ePWM5 can achieve synchronous phase shifting, we will not continue to verify it later, but ePWM7 should not be able to achieve synchronous phase shifting relative to ePWM6.
There is a picture like the following in the reference design, but there is no explanation about this issue in the reference design document.
您好，这个是TMS320F280049C ePWM模块TB子模块移相同步信号连接图：
sprui33e_TMS320F28004x Real-Time Microcontrollers Technical Reference Manual (Rev. E) Figure 18-7. Time-Base Counter Synchronization Scheme
ePWM4可以相对ePWM1的输入同步信号和输出同步信号进行移相；ePWM7可以相对ePWM4的输出同步信号、ePWM1的输入同步信号和输出同步信号进行移相。
