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关于UCC25600的ss脚电压与burst关系

Other Parts Discussed in Thread: UCC25600

关于TI 的UCC25600的burst功能,datasheet介绍说f达到350K则关驱动进入burst模式,然后当f调节到330kHz时恢复驱动。但是在IC软启过程中,即在SS脚电压<4V之前,burst功能是没有的,即使f达到了350kHz,也不会关IC,而是保持最大频率350kHz,直到软启结束SS脚电压>4V,关驱动进入Burst。请问是否是这样的,即软起SS脚电压>4V,才会进入burst模式?