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我看到TI epwM reference guide 的applications to power topologies的部分,大部分例程是相邻PWM之间的同步;例如 PWM1和PWM2之间的同步;PWM1,PWM2,PWM3的同步等;
但PWM1同步输出和PWM3同步输入(不相邻)之间可同步吗?
主模块的同步输出(PWM1)与从模块(PWM2)的同步输入是如何实现连接的?
谢谢!
PWM1模块和PWM3模块不能直接同步,必须通过PWM2模块才可以三个模块一起同步。
请参考ePWM user's guide的“2.2.3.3 Time-Base Counter Synchronization”,介绍了不同系列芯片PWM同步的拓扑结构。
后来我看了一下EPWM的框图,框图中EPWM1和EPWM2的同步问题是连在一起的!