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tms320f28015 产生spwm

Other Parts Discussed in Thread: TMS320F28015

想用tms320f28015 产生三相spwm,采用查表法,单极性倍频方式,现在遇到一个问题,怎么让epwm1与epwm3中心对其呢(pwm是增减模式),我测得波形总是有5uS得偏差

  • 现在不太建议使用F28015,是很早的芯片,可以选择F28035进行替代,并且如果PWM1要和PWM3完全对齐,需要使能同步功能,但是需要引入PWM2,也就是PWM1的时基同步PWM2的时基,PWM2的时基同步PWM3的时基,这样就可以保证他们的时基永远是相同的。