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移相全桥高频电源使用TMS320F280X还是TMS320F280XX好?主要是HRPWM选择问题,其余皆可满足要求。

移相全桥高频电源芯片选型,不知道选用TMS320F280X还是TMS320F280XX好?我看资料上两种芯片都有HRPWM,不知道区别在哪里?