This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

LM3409的EN脚调光问题

Other Parts Discussed in Thread: LM3409

在对LM3409的EN脚接入10KHz的方波调光的时候,电感会有啸叫,不管是Internal PWM dimming还是External PWM dimming的时候都一样有。同时在EVM板上测试的结果也是会有啸叫。电感输出端对地已加2.2uF电容。请问是怎么回事?