如题，请问下UCC28070芯片的PKLMT引脚电压设置必须高于规格书中有个表格标注的3.3V，输出PWM波才会关闭么？现在的问题是，比如我设置PKLMT引脚电压为2V，当CSA/CSB引脚电压到达2V后，输出的PWM波并没有关闭，反而电感电流的波形被削成平顶，感觉峰值电流一直被限制在2V对应的电流上，请问这样的情况正常么？如果这样的话，是不是必须PKLMT电压设置在3.3V以上，才能做过流保护功能用？谢谢
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