驱动器输出震荡 蓝色为高侧波形 黄色为低侧波形
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PCB布局中的寄生电感和电容,电源去耦不足等都有可能导致这个问题。
可以优化 PCB 布局入手。下面的参考设计和开发板资料可以参考:
https://www.ti.com.cn/tool/cn/TIEVM-VIENNARECT
https://www.ti.com.cn/tool/cn/UCC21520EVM-286