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TMS320F280049C: LLC闭环驱动波形异常,输出电压基本稳定。

Part Number: TMS320F280049C
Other Parts Discussed in Thread: TIDA-010062, SFRA

参考例程:TIDA-010062的llc_f280049

低压输入,在36v内,llc驱动波形是趋于方波的,如下图。超过36v的输入,波形有段时间会消失,导致这一现象的原因可能是什么?有什么调试的建议吗?