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关于TPS92690 的PWM调光出现频闪和噪音问题

Other Parts Discussed in Thread: TPS92690

    使用TPS92690  boost方式从12V to 24V/350mA,在PWM(100——1000HZ)调光100%duty时不会出现频闪和噪音,但是只要一开始调光就出现噪音,而且声音还比较大,当调光duty减少到50%以下时出现频闪。

   PS:使用TI的EVM板同样出现此问题

求技术支持和解答