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TMS320F280049C: PWM软起动还是移相的问题

Part Number: TMS320F280049C


我现在2个pwm init上完全一样,但是波形抓出来差45us,我不是很清楚是移相导致的还是TI 原来的软起动导致的,代码是在TIDM-2008上进行的更改